Mercurial > hg > CbC > CbC_gcc
annotate gcc/opts-common.c @ 118:fd00160c1b76
ifdef TARGET_64BIT
author | mir3636 |
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date | Tue, 27 Feb 2018 15:01:35 +0900 |
parents | 04ced10e8804 |
children | 84e7813d76e9 |
rev | line source |
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0 | 1 /* Command line option handling. |
111 | 2 Copyright (C) 2006-2017 Free Software Foundation, Inc. |
0 | 3 |
4 This file is part of GCC. | |
5 | |
6 GCC is free software; you can redistribute it and/or modify it under | |
7 the terms of the GNU General Public License as published by the Free | |
8 Software Foundation; either version 3, or (at your option) any later | |
9 version. | |
10 | |
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 for more details. | |
15 | |
16 You should have received a copy of the GNU General Public License | |
17 along with GCC; see the file COPYING3. If not see | |
18 <http://www.gnu.org/licenses/>. */ | |
19 | |
20 #include "config.h" | |
21 #include "system.h" | |
22 #include "intl.h" | |
23 #include "coretypes.h" | |
24 #include "opts.h" | |
111 | 25 #include "options.h" |
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26 #include "diagnostic.h" |
111 | 27 #include "spellcheck.h" |
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28 |
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29 static void prune_options (struct cl_decoded_option **, unsigned int *); |
0 | 30 |
111 | 31 /* An option that is undocumented, that takes a joined argument, and |
32 that doesn't fit any of the classes of uses (language/common, | |
33 driver, target) is assumed to be a prefix used to catch | |
34 e.g. negated options, and stop them from being further shortened to | |
35 a prefix that could use the negated option as an argument. For | |
36 example, we want -gno-statement-frontiers to be taken as a negation | |
37 of -gstatement-frontiers, but without catching the gno- prefix and | |
38 signaling it's to be used for option remapping, it would end up | |
39 backtracked to g with no-statemnet-frontiers as the debug level. */ | |
40 | |
41 static bool | |
42 remapping_prefix_p (const struct cl_option *opt) | |
43 { | |
44 return opt->flags & CL_UNDOCUMENTED | |
45 && opt->flags & CL_JOINED | |
46 && !(opt->flags & (CL_DRIVER | CL_TARGET | CL_COMMON | CL_LANG_ALL)); | |
47 } | |
48 | |
0 | 49 /* Perform a binary search to find which option the command-line INPUT |
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50 matches. Returns its index in the option array, and |
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51 OPT_SPECIAL_unknown on failure. |
0 | 52 |
53 This routine is quite subtle. A normal binary search is not good | |
54 enough because some options can be suffixed with an argument, and | |
55 multiple sub-matches can occur, e.g. input of "-pedantic" matching | |
56 the initial substring of "-pedantic-errors". | |
57 | |
58 A more complicated example is -gstabs. It should match "-g" with | |
59 an argument of "stabs". Suppose, however, that the number and list | |
60 of switches are such that the binary search tests "-gen-decls" | |
61 before having tested "-g". This doesn't match, and as "-gen-decls" | |
62 is less than "-gstabs", it will become the lower bound of the | |
63 binary search range, and "-g" will never be seen. To resolve this | |
64 issue, 'optc-gen.awk' makes "-gen-decls" point, via the back_chain member, | |
65 to "-g" so that failed searches that end between "-gen-decls" and | |
66 the lexicographically subsequent switch know to go back and see if | |
67 "-g" causes a match (which it does in this example). | |
68 | |
69 This search is done in such a way that the longest match for the | |
70 front end in question wins. If there is no match for the current | |
71 front end, the longest match for a different front end is returned | |
72 (or N_OPTS if none) and the caller emits an error message. */ | |
73 size_t | |
111 | 74 find_opt (const char *input, unsigned int lang_mask) |
0 | 75 { |
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76 size_t mn, mn_orig, mx, md, opt_len; |
0 | 77 size_t match_wrong_lang; |
78 int comp; | |
79 | |
80 mn = 0; | |
81 mx = cl_options_count; | |
82 | |
83 /* Find mn such this lexicographical inequality holds: | |
84 cl_options[mn] <= input < cl_options[mn + 1]. */ | |
85 while (mx - mn > 1) | |
86 { | |
87 md = (mn + mx) / 2; | |
88 opt_len = cl_options[md].opt_len; | |
89 comp = strncmp (input, cl_options[md].opt_text + 1, opt_len); | |
90 | |
91 if (comp < 0) | |
92 mx = md; | |
93 else | |
94 mn = md; | |
95 } | |
96 | |
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97 mn_orig = mn; |
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98 |
0 | 99 /* This is the switch that is the best match but for a different |
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100 front end, or OPT_SPECIAL_unknown if there is no match at all. */ |
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101 match_wrong_lang = OPT_SPECIAL_unknown; |
0 | 102 |
103 /* Backtrace the chain of possible matches, returning the longest | |
104 one, if any, that fits best. With current GCC switches, this | |
105 loop executes at most twice. */ | |
106 do | |
107 { | |
108 const struct cl_option *opt = &cl_options[mn]; | |
109 | |
110 /* Is the input either an exact match or a prefix that takes a | |
111 joined argument? */ | |
112 if (!strncmp (input, opt->opt_text + 1, opt->opt_len) | |
113 && (input[opt->opt_len] == '\0' || (opt->flags & CL_JOINED))) | |
114 { | |
115 /* If language is OK, return it. */ | |
116 if (opt->flags & lang_mask) | |
117 return mn; | |
118 | |
111 | 119 if (remapping_prefix_p (opt)) |
120 return OPT_SPECIAL_unknown; | |
121 | |
0 | 122 /* If we haven't remembered a prior match, remember this |
123 one. Any prior match is necessarily better. */ | |
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124 if (match_wrong_lang == OPT_SPECIAL_unknown) |
0 | 125 match_wrong_lang = mn; |
126 } | |
127 | |
128 /* Try the next possibility. This is cl_options_count if there | |
129 are no more. */ | |
130 mn = opt->back_chain; | |
131 } | |
132 while (mn != cl_options_count); | |
133 | |
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134 if (match_wrong_lang == OPT_SPECIAL_unknown && input[0] == '-') |
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135 { |
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136 /* Long options, starting "--", may be abbreviated if the |
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137 abbreviation is unambiguous. This only applies to options |
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138 not taking a joined argument, and abbreviations of "--option" |
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139 are permitted even if there is a variant "--option=". */ |
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140 size_t mnc = mn_orig + 1; |
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141 size_t cmp_len = strlen (input); |
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142 while (mnc < cl_options_count |
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143 && strncmp (input, cl_options[mnc].opt_text + 1, cmp_len) == 0) |
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144 { |
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145 /* Option matching this abbreviation. OK if it is the first |
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146 match and that does not take a joined argument, or the |
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147 second match, taking a joined argument and with only '=' |
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148 added to the first match; otherwise considered |
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149 ambiguous. */ |
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150 if (mnc == mn_orig + 1 |
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151 && !(cl_options[mnc].flags & CL_JOINED)) |
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152 match_wrong_lang = mnc; |
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153 else if (mnc == mn_orig + 2 |
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154 && match_wrong_lang == mn_orig + 1 |
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155 && (cl_options[mnc].flags & CL_JOINED) |
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156 && (cl_options[mnc].opt_len |
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157 == cl_options[mn_orig + 1].opt_len + 1) |
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158 && strncmp (cl_options[mnc].opt_text + 1, |
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159 cl_options[mn_orig + 1].opt_text + 1, |
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160 cl_options[mn_orig + 1].opt_len) == 0) |
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161 ; /* OK, as long as there are no more matches. */ |
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162 else |
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163 return OPT_SPECIAL_unknown; |
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164 mnc++; |
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165 } |
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166 } |
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167 |
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168 /* Return the best wrong match, or OPT_SPECIAL_unknown if none. */ |
0 | 169 return match_wrong_lang; |
170 } | |
171 | |
111 | 172 /* If ARG is a non-negative decimal or hexadecimal integer, return its |
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173 value, otherwise return -1. */ |
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174 |
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175 int |
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176 integral_argument (const char *arg) |
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177 { |
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178 const char *p = arg; |
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179 |
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180 while (*p && ISDIGIT (*p)) |
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181 p++; |
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182 |
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183 if (*p == '\0') |
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184 return atoi (arg); |
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185 |
111 | 186 /* It wasn't a decimal number - try hexadecimal. */ |
187 if (arg[0] == '0' && (arg[1] == 'x' || arg[1] == 'X')) | |
188 { | |
189 p = arg + 2; | |
190 while (*p && ISXDIGIT (*p)) | |
191 p++; | |
192 | |
193 if (p != arg + 2 && *p == '\0') | |
194 return strtol (arg, NULL, 16); | |
195 } | |
196 | |
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197 return -1; |
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198 } |
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199 |
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200 /* Return whether OPTION is OK for the language given by |
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201 LANG_MASK. */ |
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202 static bool |
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203 option_ok_for_language (const struct cl_option *option, |
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204 unsigned int lang_mask) |
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205 { |
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206 if (!(option->flags & lang_mask)) |
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207 return false; |
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208 else if ((option->flags & CL_TARGET) |
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209 && (option->flags & (CL_LANG_ALL | CL_DRIVER)) |
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210 && !(option->flags & (lang_mask & ~CL_COMMON & ~CL_TARGET))) |
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211 /* Complain for target flag language mismatches if any languages |
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212 are specified. */ |
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213 return false; |
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214 return true; |
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215 } |
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216 |
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217 /* Return whether ENUM_ARG is OK for the language given by |
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218 LANG_MASK. */ |
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219 |
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220 static bool |
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221 enum_arg_ok_for_language (const struct cl_enum_arg *enum_arg, |
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222 unsigned int lang_mask) |
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223 { |
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224 return (lang_mask & CL_DRIVER) || !(enum_arg->flags & CL_ENUM_DRIVER_ONLY); |
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225 } |
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226 |
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227 /* Look up ARG in ENUM_ARGS for language LANG_MASK, returning true and |
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228 storing the value in *VALUE if found, and returning false without |
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229 modifying *VALUE if not found. */ |
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230 |
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231 static bool |
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232 enum_arg_to_value (const struct cl_enum_arg *enum_args, |
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233 const char *arg, int *value, unsigned int lang_mask) |
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234 { |
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235 unsigned int i; |
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236 |
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237 for (i = 0; enum_args[i].arg != NULL; i++) |
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238 if (strcmp (arg, enum_args[i].arg) == 0 |
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239 && enum_arg_ok_for_language (&enum_args[i], lang_mask)) |
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240 { |
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241 *value = enum_args[i].value; |
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242 return true; |
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243 } |
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244 |
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245 return false; |
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246 } |
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247 |
111 | 248 /* Look up ARG in the enum used by option OPT_INDEX for language |
249 LANG_MASK, returning true and storing the value in *VALUE if found, | |
250 and returning false without modifying *VALUE if not found. */ | |
251 | |
252 bool | |
253 opt_enum_arg_to_value (size_t opt_index, const char *arg, int *value, | |
254 unsigned int lang_mask) | |
255 { | |
256 const struct cl_option *option = &cl_options[opt_index]; | |
257 | |
258 gcc_assert (option->var_type == CLVC_ENUM); | |
259 | |
260 return enum_arg_to_value (cl_enums[option->var_enum].values, arg, | |
261 value, lang_mask); | |
262 } | |
263 | |
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264 /* Look of VALUE in ENUM_ARGS for language LANG_MASK and store the |
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265 corresponding string in *ARGP, returning true if the found string |
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266 was marked as canonical, false otherwise. If VALUE is not found |
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267 (which may be the case for uninitialized values if the relevant |
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268 option has not been passed), set *ARGP to NULL and return |
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269 false. */ |
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270 |
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271 bool |
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272 enum_value_to_arg (const struct cl_enum_arg *enum_args, |
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273 const char **argp, int value, unsigned int lang_mask) |
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274 { |
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275 unsigned int i; |
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276 |
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277 for (i = 0; enum_args[i].arg != NULL; i++) |
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278 if (enum_args[i].value == value |
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279 && (enum_args[i].flags & CL_ENUM_CANONICAL) |
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280 && enum_arg_ok_for_language (&enum_args[i], lang_mask)) |
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281 { |
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282 *argp = enum_args[i].arg; |
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283 return true; |
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284 } |
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285 |
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286 for (i = 0; enum_args[i].arg != NULL; i++) |
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287 if (enum_args[i].value == value |
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288 && enum_arg_ok_for_language (&enum_args[i], lang_mask)) |
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289 { |
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290 *argp = enum_args[i].arg; |
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291 return false; |
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292 } |
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293 |
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294 *argp = NULL; |
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295 return false; |
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296 } |
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297 |
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298 /* Fill in the canonical option part of *DECODED with an option |
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299 described by OPT_INDEX, ARG and VALUE. */ |
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300 |
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301 static void |
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302 generate_canonical_option (size_t opt_index, const char *arg, int value, |
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303 struct cl_decoded_option *decoded) |
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304 { |
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305 const struct cl_option *option = &cl_options[opt_index]; |
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306 const char *opt_text = option->opt_text; |
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307 |
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308 if (value == 0 |
111 | 309 && !option->cl_reject_negative |
310 && (opt_text[1] == 'W' || opt_text[1] == 'f' | |
311 || opt_text[1] == 'g' || opt_text[1] == 'm')) | |
67
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312 { |
111 | 313 char *t = XOBNEWVEC (&opts_obstack, char, option->opt_len + 5); |
67
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314 t[0] = '-'; |
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315 t[1] = opt_text[1]; |
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316 t[2] = 'n'; |
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317 t[3] = 'o'; |
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318 t[4] = '-'; |
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319 memcpy (t + 5, opt_text + 2, option->opt_len); |
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320 opt_text = t; |
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321 } |
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322 |
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323 decoded->canonical_option[2] = NULL; |
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324 decoded->canonical_option[3] = NULL; |
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325 |
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326 if (arg) |
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327 { |
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328 if ((option->flags & CL_SEPARATE) |
111 | 329 && !option->cl_separate_alias) |
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330 { |
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331 decoded->canonical_option[0] = opt_text; |
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332 decoded->canonical_option[1] = arg; |
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333 decoded->canonical_option_num_elements = 2; |
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334 } |
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335 else |
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336 { |
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337 gcc_assert (option->flags & CL_JOINED); |
111 | 338 decoded->canonical_option[0] = opts_concat (opt_text, arg, NULL); |
67
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339 decoded->canonical_option[1] = NULL; |
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340 decoded->canonical_option_num_elements = 1; |
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341 } |
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342 } |
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343 else |
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344 { |
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345 decoded->canonical_option[0] = opt_text; |
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346 decoded->canonical_option[1] = NULL; |
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347 decoded->canonical_option_num_elements = 1; |
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348 } |
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349 } |
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350 |
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351 /* Structure describing mappings from options on the command line to |
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352 options to look up with find_opt. */ |
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353 struct option_map |
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354 { |
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355 /* Prefix of the option on the command line. */ |
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356 const char *opt0; |
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357 /* If two argv elements are considered to be merged into one option, |
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358 prefix for the second element, otherwise NULL. */ |
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359 const char *opt1; |
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360 /* The new prefix to map to. */ |
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361 const char *new_prefix; |
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362 /* Whether at least one character is needed following opt1 or opt0 |
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363 for this mapping to be used. (--optimize= is valid for -O, but |
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364 --warn- is not valid for -W.) */ |
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365 bool another_char_needed; |
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366 /* Whether the original option is a negated form of the option |
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367 resulting from this map. */ |
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368 bool negated; |
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369 }; |
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370 static const struct option_map option_map[] = |
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371 { |
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372 { "-Wno-", NULL, "-W", false, true }, |
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373 { "-fno-", NULL, "-f", false, true }, |
111 | 374 { "-gno-", NULL, "-g", false, true }, |
67
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375 { "-mno-", NULL, "-m", false, true }, |
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376 { "--debug=", NULL, "-g", false, false }, |
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377 { "--machine-", NULL, "-m", true, false }, |
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378 { "--machine-no-", NULL, "-m", false, true }, |
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379 { "--machine=", NULL, "-m", false, false }, |
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380 { "--machine=no-", NULL, "-m", false, true }, |
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381 { "--machine", "", "-m", false, false }, |
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382 { "--machine", "no-", "-m", false, true }, |
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383 { "--optimize=", NULL, "-O", false, false }, |
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384 { "--std=", NULL, "-std=", false, false }, |
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385 { "--std", "", "-std=", false, false }, |
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386 { "--warn-", NULL, "-W", true, false }, |
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387 { "--warn-no-", NULL, "-W", false, true }, |
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388 { "--", NULL, "-f", true, false }, |
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389 { "--no-", NULL, "-f", false, true } |
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390 }; |
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391 |
111 | 392 /* Helper function for gcc.c's driver::suggest_option, for populating the |
393 vec of suggestions for misspelled options. | |
394 | |
395 option_map above provides various prefixes for spelling command-line | |
396 options, which decode_cmdline_option uses to map spellings of options | |
397 to specific options. We want to do the reverse: to find all the ways | |
398 that a user could validly spell an option. | |
399 | |
400 Given valid OPT_TEXT (with a leading dash) for OPTION, add it and all | |
401 of its valid variant spellings to CANDIDATES, each without a leading | |
402 dash. | |
403 | |
404 For example, given "-Wabi-tag", the following are added to CANDIDATES: | |
405 "Wabi-tag" | |
406 "Wno-abi-tag" | |
407 "-warn-abi-tag" | |
408 "-warn-no-abi-tag". | |
409 | |
410 The added strings must be freed using free. */ | |
411 | |
412 void | |
413 add_misspelling_candidates (auto_vec<char *> *candidates, | |
414 const struct cl_option *option, | |
415 const char *opt_text) | |
416 { | |
417 gcc_assert (candidates); | |
418 gcc_assert (option); | |
419 gcc_assert (opt_text); | |
420 if (remapping_prefix_p (option)) | |
421 return; | |
422 candidates->safe_push (xstrdup (opt_text + 1)); | |
423 for (unsigned i = 0; i < ARRAY_SIZE (option_map); i++) | |
424 { | |
425 const char *opt0 = option_map[i].opt0; | |
426 const char *new_prefix = option_map[i].new_prefix; | |
427 size_t new_prefix_len = strlen (new_prefix); | |
428 | |
429 if (option->cl_reject_negative && option_map[i].negated) | |
430 continue; | |
431 | |
432 if (strncmp (opt_text, new_prefix, new_prefix_len) == 0) | |
433 { | |
434 char *alternative = concat (opt0 + 1, opt_text + new_prefix_len, | |
435 NULL); | |
436 candidates->safe_push (alternative); | |
437 } | |
438 } | |
439 } | |
440 | |
67
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441 /* Decode the switch beginning at ARGV for the language indicated by |
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442 LANG_MASK (including CL_COMMON and CL_TARGET if applicable), into |
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443 the structure *DECODED. Returns the number of switches |
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444 consumed. */ |
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445 |
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446 static unsigned int |
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447 decode_cmdline_option (const char **argv, unsigned int lang_mask, |
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448 struct cl_decoded_option *decoded) |
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449 { |
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450 size_t opt_index; |
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451 const char *arg = 0; |
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452 int value = 1; |
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453 unsigned int result = 1, i, extra_args, separate_args = 0; |
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454 int adjust_len = 0; |
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455 size_t total_len; |
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456 char *p; |
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457 const struct cl_option *option; |
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458 int errors = 0; |
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459 const char *warn_message = NULL; |
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460 bool separate_arg_flag; |
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461 bool joined_arg_flag; |
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462 bool have_separate_arg = false; |
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463 |
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464 extra_args = 0; |
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465 |
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466 opt_index = find_opt (argv[0] + 1, lang_mask); |
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467 i = 0; |
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468 while (opt_index == OPT_SPECIAL_unknown |
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469 && i < ARRAY_SIZE (option_map)) |
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470 { |
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471 const char *opt0 = option_map[i].opt0; |
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472 const char *opt1 = option_map[i].opt1; |
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473 const char *new_prefix = option_map[i].new_prefix; |
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474 bool another_char_needed = option_map[i].another_char_needed; |
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475 size_t opt0_len = strlen (opt0); |
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476 size_t opt1_len = (opt1 == NULL ? 0 : strlen (opt1)); |
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477 size_t optn_len = (opt1 == NULL ? opt0_len : opt1_len); |
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478 size_t new_prefix_len = strlen (new_prefix); |
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479 |
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480 extra_args = (opt1 == NULL ? 0 : 1); |
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481 value = !option_map[i].negated; |
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482 |
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483 if (strncmp (argv[0], opt0, opt0_len) == 0 |
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484 && (opt1 == NULL |
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485 || (argv[1] != NULL && strncmp (argv[1], opt1, opt1_len) == 0)) |
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486 && (!another_char_needed |
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487 || argv[extra_args][optn_len] != 0)) |
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488 { |
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489 size_t arglen = strlen (argv[extra_args]); |
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490 char *dup; |
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491 |
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492 adjust_len = (int) optn_len - (int) new_prefix_len; |
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493 dup = XNEWVEC (char, arglen + 1 - adjust_len); |
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494 memcpy (dup, new_prefix, new_prefix_len); |
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495 memcpy (dup + new_prefix_len, argv[extra_args] + optn_len, |
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496 arglen - optn_len + 1); |
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497 opt_index = find_opt (dup + 1, lang_mask); |
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498 free (dup); |
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499 } |
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500 i++; |
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501 } |
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502 |
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503 if (opt_index == OPT_SPECIAL_unknown) |
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504 { |
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505 arg = argv[0]; |
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506 extra_args = 0; |
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507 value = 1; |
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508 goto done; |
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509 } |
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510 |
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511 option = &cl_options[opt_index]; |
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512 |
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513 /* Reject negative form of switches that don't take negatives as |
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514 unrecognized. */ |
111 | 515 if (!value && option->cl_reject_negative) |
67
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516 { |
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517 opt_index = OPT_SPECIAL_unknown; |
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518 errors |= CL_ERR_NEGATIVE; |
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519 arg = argv[0]; |
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520 goto done; |
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521 } |
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522 |
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523 result = extra_args + 1; |
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524 warn_message = option->warn_message; |
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525 |
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526 /* Check to see if the option is disabled for this configuration. */ |
111 | 527 if (option->cl_disabled) |
67
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528 errors |= CL_ERR_DISABLED; |
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529 |
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530 /* Determine whether there may be a separate argument based on |
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531 whether this option is being processed for the driver, and, if |
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532 so, how many such arguments. */ |
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533 separate_arg_flag = ((option->flags & CL_SEPARATE) |
111 | 534 && !(option->cl_no_driver_arg |
67
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535 && (lang_mask & CL_DRIVER))); |
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536 separate_args = (separate_arg_flag |
111 | 537 ? option->cl_separate_nargs + 1 |
67
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538 : 0); |
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539 joined_arg_flag = (option->flags & CL_JOINED) != 0; |
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540 |
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541 /* Sort out any argument the switch takes. */ |
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542 if (joined_arg_flag) |
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543 { |
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544 /* Have arg point to the original switch. This is because |
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545 some code, such as disable_builtin_function, expects its |
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546 argument to be persistent until the program exits. */ |
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547 arg = argv[extra_args] + cl_options[opt_index].opt_len + 1 + adjust_len; |
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548 |
111 | 549 if (*arg == '\0' && !option->cl_missing_ok) |
67
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550 { |
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551 if (separate_arg_flag) |
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552 { |
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553 arg = argv[extra_args + 1]; |
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554 result = extra_args + 2; |
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555 if (arg == NULL) |
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556 result = extra_args + 1; |
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557 else |
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558 have_separate_arg = true; |
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559 } |
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560 else |
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561 /* Missing argument. */ |
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562 arg = NULL; |
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563 } |
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564 } |
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565 else if (separate_arg_flag) |
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566 { |
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567 arg = argv[extra_args + 1]; |
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568 for (i = 0; i < separate_args; i++) |
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569 if (argv[extra_args + 1 + i] == NULL) |
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570 { |
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571 errors |= CL_ERR_MISSING_ARG; |
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572 break; |
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573 } |
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574 result = extra_args + 1 + i; |
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575 if (arg != NULL) |
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576 have_separate_arg = true; |
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577 } |
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578 |
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579 if (arg == NULL && (separate_arg_flag || joined_arg_flag)) |
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580 errors |= CL_ERR_MISSING_ARG; |
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581 |
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582 /* Is this option an alias (or an ignored option, marked as an alias |
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583 of OPT_SPECIAL_ignore)? */ |
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584 if (option->alias_target != N_OPTS |
111 | 585 && (!option->cl_separate_alias || have_separate_arg)) |
67
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586 { |
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587 size_t new_opt_index = option->alias_target; |
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588 |
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589 if (new_opt_index == OPT_SPECIAL_ignore) |
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590 { |
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591 gcc_assert (option->alias_arg == NULL); |
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592 gcc_assert (option->neg_alias_arg == NULL); |
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593 opt_index = new_opt_index; |
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594 arg = NULL; |
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595 value = 1; |
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596 } |
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597 else |
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598 { |
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599 const struct cl_option *new_option = &cl_options[new_opt_index]; |
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600 |
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601 /* The new option must not be an alias itself. */ |
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602 gcc_assert (new_option->alias_target == N_OPTS |
111 | 603 || new_option->cl_separate_alias); |
67
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604 |
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605 if (option->neg_alias_arg) |
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606 { |
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607 gcc_assert (option->alias_arg != NULL); |
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608 gcc_assert (arg == NULL); |
111 | 609 gcc_assert (!option->cl_negative_alias); |
67
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610 if (value) |
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611 arg = option->alias_arg; |
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612 else |
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613 arg = option->neg_alias_arg; |
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614 value = 1; |
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615 } |
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616 else if (option->alias_arg) |
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617 { |
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618 gcc_assert (value == 1); |
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619 gcc_assert (arg == NULL); |
111 | 620 gcc_assert (!option->cl_negative_alias); |
67
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621 arg = option->alias_arg; |
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622 } |
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623 |
111 | 624 if (option->cl_negative_alias) |
625 value = !value; | |
626 | |
67
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627 opt_index = new_opt_index; |
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628 option = new_option; |
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629 |
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630 if (value == 0) |
111 | 631 gcc_assert (!option->cl_reject_negative); |
67
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632 |
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633 /* Recompute what arguments are allowed. */ |
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634 separate_arg_flag = ((option->flags & CL_SEPARATE) |
111 | 635 && !(option->cl_no_driver_arg |
67
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636 && (lang_mask & CL_DRIVER))); |
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637 joined_arg_flag = (option->flags & CL_JOINED) != 0; |
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638 |
111 | 639 if (separate_args > 1 || option->cl_separate_nargs) |
67
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640 gcc_assert (separate_args |
111 | 641 == (unsigned int) option->cl_separate_nargs + 1); |
67
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642 |
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643 if (!(errors & CL_ERR_MISSING_ARG)) |
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644 { |
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645 if (separate_arg_flag || joined_arg_flag) |
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646 { |
111 | 647 if (option->cl_missing_ok && arg == NULL) |
67
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648 arg = ""; |
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649 gcc_assert (arg != NULL); |
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650 } |
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651 else |
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652 gcc_assert (arg == NULL); |
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653 } |
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654 |
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655 /* Recheck for warnings and disabled options. */ |
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656 if (option->warn_message) |
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657 { |
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658 gcc_assert (warn_message == NULL); |
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659 warn_message = option->warn_message; |
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660 } |
111 | 661 if (option->cl_disabled) |
67
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662 errors |= CL_ERR_DISABLED; |
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663 } |
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664 } |
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665 |
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666 /* Check if this is a switch for a different front end. */ |
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667 if (!option_ok_for_language (option, lang_mask)) |
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668 errors |= CL_ERR_WRONG_LANG; |
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669 |
111 | 670 /* Convert the argument to lowercase if appropriate. */ |
671 if (arg && option->cl_tolower) | |
672 { | |
673 size_t j; | |
674 size_t len = strlen (arg); | |
675 char *arg_lower = XOBNEWVEC (&opts_obstack, char, len + 1); | |
676 | |
677 for (j = 0; j < len; j++) | |
678 arg_lower[j] = TOLOWER ((unsigned char) arg[j]); | |
679 arg_lower[len] = 0; | |
680 arg = arg_lower; | |
681 } | |
682 | |
67
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683 /* If the switch takes an integer, convert it. */ |
111 | 684 if (arg && option->cl_uinteger) |
67
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685 { |
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686 value = integral_argument (arg); |
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687 if (value == -1) |
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688 errors |= CL_ERR_UINT_ARG; |
111 | 689 |
690 /* Reject value out of a range. */ | |
691 if (option->range_max != -1 | |
692 && (value < option->range_min || value > option->range_max)) | |
693 errors |= CL_ERR_INT_RANGE_ARG; | |
67
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694 } |
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695 |
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696 /* If the switch takes an enumerated argument, convert it. */ |
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697 if (arg && (option->var_type == CLVC_ENUM)) |
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698 { |
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699 const struct cl_enum *e = &cl_enums[option->var_enum]; |
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700 |
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701 gcc_assert (value == 1); |
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702 if (enum_arg_to_value (e->values, arg, &value, lang_mask)) |
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703 { |
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704 const char *carg = NULL; |
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705 |
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706 if (enum_value_to_arg (e->values, &carg, value, lang_mask)) |
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707 arg = carg; |
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708 gcc_assert (carg != NULL); |
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709 } |
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710 else |
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711 errors |= CL_ERR_ENUM_ARG; |
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712 } |
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713 |
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714 done: |
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715 decoded->opt_index = opt_index; |
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716 decoded->arg = arg; |
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717 decoded->value = value; |
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718 decoded->errors = errors; |
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719 decoded->warn_message = warn_message; |
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720 |
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721 if (opt_index == OPT_SPECIAL_unknown) |
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722 gcc_assert (result == 1); |
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723 |
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724 gcc_assert (result >= 1 && result <= ARRAY_SIZE (decoded->canonical_option)); |
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725 decoded->canonical_option_num_elements = result; |
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726 total_len = 0; |
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727 for (i = 0; i < ARRAY_SIZE (decoded->canonical_option); i++) |
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728 { |
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729 if (i < result) |
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730 { |
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731 size_t len; |
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732 if (opt_index == OPT_SPECIAL_unknown) |
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733 decoded->canonical_option[i] = argv[i]; |
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734 else |
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735 decoded->canonical_option[i] = NULL; |
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736 len = strlen (argv[i]); |
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737 /* If the argument is an empty string, we will print it as "" in |
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738 orig_option_with_args_text. */ |
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739 total_len += (len != 0 ? len : 2) + 1; |
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740 } |
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741 else |
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742 decoded->canonical_option[i] = NULL; |
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743 } |
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744 if (opt_index != OPT_SPECIAL_unknown && opt_index != OPT_SPECIAL_ignore) |
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745 { |
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746 generate_canonical_option (opt_index, arg, value, decoded); |
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747 if (separate_args > 1) |
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748 { |
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749 for (i = 0; i < separate_args; i++) |
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750 { |
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751 if (argv[extra_args + 1 + i] == NULL) |
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752 break; |
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753 else |
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754 decoded->canonical_option[1 + i] = argv[extra_args + 1 + i]; |
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755 } |
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756 gcc_assert (result == 1 + i); |
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757 decoded->canonical_option_num_elements = result; |
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758 } |
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759 } |
111 | 760 decoded->orig_option_with_args_text |
761 = p = XOBNEWVEC (&opts_obstack, char, total_len); | |
67
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762 for (i = 0; i < result; i++) |
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763 { |
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764 size_t len = strlen (argv[i]); |
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|
765 |
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|
766 /* Print the empty string verbally. */ |
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767 if (len == 0) |
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|
768 { |
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|
769 *p++ = '"'; |
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770 *p++ = '"'; |
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|
771 } |
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772 else |
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|
773 memcpy (p, argv[i], len); |
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774 p += len; |
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775 if (i == result - 1) |
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776 *p++ = 0; |
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777 else |
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778 *p++ = ' '; |
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779 } |
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780 |
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781 return result; |
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782 } |
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783 |
111 | 784 /* Obstack for option strings. */ |
785 | |
786 struct obstack opts_obstack; | |
787 | |
788 /* Like libiberty concat, but allocate using opts_obstack. */ | |
789 | |
790 char * | |
791 opts_concat (const char *first, ...) | |
792 { | |
793 char *newstr, *end; | |
794 size_t length = 0; | |
795 const char *arg; | |
796 va_list ap; | |
797 | |
798 /* First compute the size of the result and get sufficient memory. */ | |
799 va_start (ap, first); | |
800 for (arg = first; arg; arg = va_arg (ap, const char *)) | |
801 length += strlen (arg); | |
802 newstr = XOBNEWVEC (&opts_obstack, char, length + 1); | |
803 va_end (ap); | |
804 | |
805 /* Now copy the individual pieces to the result string. */ | |
806 va_start (ap, first); | |
807 for (arg = first, end = newstr; arg; arg = va_arg (ap, const char *)) | |
808 { | |
809 length = strlen (arg); | |
810 memcpy (end, arg, length); | |
811 end += length; | |
812 } | |
813 *end = '\0'; | |
814 va_end (ap); | |
815 return newstr; | |
816 } | |
817 | |
67
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818 /* Decode command-line options (ARGC and ARGV being the arguments of |
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819 main) into an array, setting *DECODED_OPTIONS to a pointer to that |
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820 array and *DECODED_OPTIONS_COUNT to the number of entries in the |
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821 array. The first entry in the array is always one for the program |
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822 name (OPT_SPECIAL_program_name). LANG_MASK indicates the language |
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823 flags applicable for decoding (including CL_COMMON and CL_TARGET if |
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824 those options should be considered applicable). Do not produce any |
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825 diagnostics or set state outside of these variables. */ |
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826 |
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827 void |
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828 decode_cmdline_options_to_array (unsigned int argc, const char **argv, |
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829 unsigned int lang_mask, |
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830 struct cl_decoded_option **decoded_options, |
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831 unsigned int *decoded_options_count) |
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832 { |
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833 unsigned int n, i; |
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834 struct cl_decoded_option *opt_array; |
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835 unsigned int num_decoded_options; |
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836 |
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837 opt_array = XNEWVEC (struct cl_decoded_option, argc); |
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838 |
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839 opt_array[0].opt_index = OPT_SPECIAL_program_name; |
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840 opt_array[0].warn_message = NULL; |
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841 opt_array[0].arg = argv[0]; |
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842 opt_array[0].orig_option_with_args_text = argv[0]; |
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843 opt_array[0].canonical_option_num_elements = 1; |
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844 opt_array[0].canonical_option[0] = argv[0]; |
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845 opt_array[0].canonical_option[1] = NULL; |
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846 opt_array[0].canonical_option[2] = NULL; |
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847 opt_array[0].canonical_option[3] = NULL; |
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848 opt_array[0].value = 1; |
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849 opt_array[0].errors = 0; |
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850 num_decoded_options = 1; |
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851 |
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852 for (i = 1; i < argc; i += n) |
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853 { |
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854 const char *opt = argv[i]; |
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855 |
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856 /* Interpret "-" or a non-switch as a file name. */ |
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857 if (opt[0] != '-' || opt[1] == '\0') |
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858 { |
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859 generate_option_input_file (opt, &opt_array[num_decoded_options]); |
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860 num_decoded_options++; |
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861 n = 1; |
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862 continue; |
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863 } |
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864 |
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865 n = decode_cmdline_option (argv + i, lang_mask, |
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866 &opt_array[num_decoded_options]); |
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867 num_decoded_options++; |
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868 } |
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869 |
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870 *decoded_options = opt_array; |
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871 *decoded_options_count = num_decoded_options; |
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872 prune_options (decoded_options, decoded_options_count); |
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873 } |
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874 |
0 | 875 /* Return true if NEXT_OPT_IDX cancels OPT_IDX. Return false if the |
876 next one is the same as ORIG_NEXT_OPT_IDX. */ | |
877 | |
878 static bool | |
879 cancel_option (int opt_idx, int next_opt_idx, int orig_next_opt_idx) | |
880 { | |
881 /* An option can be canceled by the same option or an option with | |
882 Negative. */ | |
883 if (cl_options [next_opt_idx].neg_index == opt_idx) | |
884 return true; | |
885 | |
886 if (cl_options [next_opt_idx].neg_index != orig_next_opt_idx) | |
887 return cancel_option (opt_idx, cl_options [next_opt_idx].neg_index, | |
888 orig_next_opt_idx); | |
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889 |
0 | 890 return false; |
891 } | |
892 | |
893 /* Filter out options canceled by the ones after them. */ | |
894 | |
67
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895 static void |
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896 prune_options (struct cl_decoded_option **decoded_options, |
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897 unsigned int *decoded_options_count) |
0 | 898 { |
67
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899 unsigned int old_decoded_options_count = *decoded_options_count; |
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900 struct cl_decoded_option *old_decoded_options = *decoded_options; |
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901 unsigned int new_decoded_options_count; |
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902 struct cl_decoded_option *new_decoded_options |
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903 = XNEWVEC (struct cl_decoded_option, old_decoded_options_count); |
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904 unsigned int i; |
0 | 905 const struct cl_option *option; |
111 | 906 unsigned int fdiagnostics_color_idx = 0; |
0 | 907 |
908 /* Remove arguments which are negated by others after them. */ | |
67
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909 new_decoded_options_count = 0; |
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910 for (i = 0; i < old_decoded_options_count; i++) |
0 | 911 { |
67
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912 unsigned int j, opt_idx, next_opt_idx; |
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913 |
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914 if (old_decoded_options[i].errors & ~CL_ERR_WRONG_LANG) |
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915 goto keep; |
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916 |
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917 opt_idx = old_decoded_options[i].opt_index; |
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918 switch (opt_idx) |
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|
919 { |
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|
920 case OPT_SPECIAL_unknown: |
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|
921 case OPT_SPECIAL_ignore: |
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922 case OPT_SPECIAL_program_name: |
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|
923 case OPT_SPECIAL_input_file: |
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|
924 goto keep; |
0 | 925 |
111 | 926 /* Do not save OPT_fdiagnostics_color_, just remember the last one. */ |
927 case OPT_fdiagnostics_color_: | |
928 fdiagnostics_color_idx = i; | |
929 continue; | |
930 | |
67
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|
931 default: |
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932 gcc_assert (opt_idx < cl_options_count); |
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933 option = &cl_options[opt_idx]; |
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934 if (option->neg_index < 0) |
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|
935 goto keep; |
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936 |
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937 /* Skip joined switches. */ |
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938 if ((option->flags & CL_JOINED)) |
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939 goto keep; |
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940 |
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941 for (j = i + 1; j < old_decoded_options_count; j++) |
0 | 942 { |
67
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943 if (old_decoded_options[j].errors & ~CL_ERR_WRONG_LANG) |
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944 continue; |
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945 next_opt_idx = old_decoded_options[j].opt_index; |
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946 if (next_opt_idx >= cl_options_count) |
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947 continue; |
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948 if (cl_options[next_opt_idx].neg_index < 0) |
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949 continue; |
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950 if ((cl_options[next_opt_idx].flags & CL_JOINED)) |
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951 continue; |
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952 if (cancel_option (opt_idx, next_opt_idx, next_opt_idx)) |
0 | 953 break; |
954 } | |
67
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955 if (j == old_decoded_options_count) |
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956 { |
0 | 957 keep: |
67
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958 new_decoded_options[new_decoded_options_count] |
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959 = old_decoded_options[i]; |
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960 new_decoded_options_count++; |
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961 } |
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962 break; |
0 | 963 } |
964 } | |
965 | |
111 | 966 if (fdiagnostics_color_idx >= 1) |
967 { | |
968 /* We put the last -fdiagnostics-color= at the first position | |
969 after argv[0] so it can take effect immediately. */ | |
970 memmove (new_decoded_options + 2, new_decoded_options + 1, | |
971 sizeof (struct cl_decoded_option) | |
972 * (new_decoded_options_count - 1)); | |
973 new_decoded_options[1] = old_decoded_options[fdiagnostics_color_idx]; | |
974 new_decoded_options_count++; | |
975 } | |
976 | |
67
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977 free (old_decoded_options); |
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978 new_decoded_options = XRESIZEVEC (struct cl_decoded_option, |
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979 new_decoded_options, |
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980 new_decoded_options_count); |
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981 *decoded_options = new_decoded_options; |
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982 *decoded_options_count = new_decoded_options_count; |
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983 } |
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|
984 |
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985 /* Handle option DECODED for the language indicated by LANG_MASK, |
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986 using the handlers in HANDLERS and setting fields in OPTS and |
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987 OPTS_SET. KIND is the diagnostic_t if this is a diagnostics |
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988 option, DK_UNSPECIFIED otherwise, and LOC is the location of the |
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989 option for options from the source file, UNKNOWN_LOCATION |
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990 otherwise. GENERATED_P is true for an option generated as part of |
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991 processing another option or otherwise generated internally, false |
111 | 992 for one explicitly passed by the user. control_warning_option |
993 generated options are considered explicitly passed by the user. | |
994 Returns false if the switch was invalid. DC is the diagnostic | |
995 context for options affecting diagnostics state, or NULL. */ | |
67
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996 |
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997 static bool |
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998 handle_option (struct gcc_options *opts, |
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999 struct gcc_options *opts_set, |
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1000 const struct cl_decoded_option *decoded, |
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1001 unsigned int lang_mask, int kind, location_t loc, |
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1002 const struct cl_option_handlers *handlers, |
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1003 bool generated_p, diagnostic_context *dc) |
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1004 { |
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1005 size_t opt_index = decoded->opt_index; |
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1006 const char *arg = decoded->arg; |
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1007 int value = decoded->value; |
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1008 const struct cl_option *option = &cl_options[opt_index]; |
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1009 void *flag_var = option_flag_var (opt_index, opts); |
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1010 size_t i; |
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1011 |
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1012 if (flag_var) |
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1013 set_option (opts, (generated_p ? NULL : opts_set), |
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1014 opt_index, value, arg, kind, loc, dc); |
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1015 |
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1016 for (i = 0; i < handlers->num_handlers; i++) |
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1017 if (option->flags & handlers->handlers[i].mask) |
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1018 { |
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1019 if (!handlers->handlers[i].handler (opts, opts_set, decoded, |
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1020 lang_mask, kind, loc, |
111 | 1021 handlers, dc, |
1022 handlers->target_option_override_hook)) | |
67
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1023 return false; |
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1024 } |
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1025 |
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1026 return true; |
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1027 } |
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1028 |
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1029 /* Like handle_option, but OPT_INDEX, ARG and VALUE describe the |
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1030 option instead of DECODED. This is used for callbacks when one |
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1031 option implies another instead of an option being decoded from the |
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1032 command line. */ |
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1033 |
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1034 bool |
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1035 handle_generated_option (struct gcc_options *opts, |
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1036 struct gcc_options *opts_set, |
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1037 size_t opt_index, const char *arg, int value, |
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1038 unsigned int lang_mask, int kind, location_t loc, |
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1039 const struct cl_option_handlers *handlers, |
111 | 1040 bool generated_p, diagnostic_context *dc) |
67
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1041 { |
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1042 struct cl_decoded_option decoded; |
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1043 |
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1044 generate_option (opt_index, arg, value, lang_mask, &decoded); |
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1045 return handle_option (opts, opts_set, &decoded, lang_mask, kind, loc, |
111 | 1046 handlers, generated_p, dc); |
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1047 } |
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1048 |
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1049 /* Fill in *DECODED with an option described by OPT_INDEX, ARG and |
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1050 VALUE for a front end using LANG_MASK. This is used when the |
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1051 compiler generates options internally. */ |
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1052 |
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1053 void |
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1054 generate_option (size_t opt_index, const char *arg, int value, |
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1055 unsigned int lang_mask, struct cl_decoded_option *decoded) |
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1056 { |
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1057 const struct cl_option *option = &cl_options[opt_index]; |
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1058 |
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1059 decoded->opt_index = opt_index; |
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1060 decoded->warn_message = NULL; |
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1061 decoded->arg = arg; |
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1062 decoded->value = value; |
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1063 decoded->errors = (option_ok_for_language (option, lang_mask) |
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1064 ? 0 |
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1065 : CL_ERR_WRONG_LANG); |
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1066 |
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1067 generate_canonical_option (opt_index, arg, value, decoded); |
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1068 switch (decoded->canonical_option_num_elements) |
0 | 1069 { |
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1070 case 1: |
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1071 decoded->orig_option_with_args_text = decoded->canonical_option[0]; |
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1072 break; |
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1073 |
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1074 case 2: |
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1075 decoded->orig_option_with_args_text |
111 | 1076 = opts_concat (decoded->canonical_option[0], " ", |
1077 decoded->canonical_option[1], NULL); | |
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1078 break; |
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1079 |
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1080 default: |
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1081 gcc_unreachable (); |
0 | 1082 } |
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1083 } |
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1084 |
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1085 /* Fill in *DECODED with an option for input file FILE. */ |
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1086 |
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1087 void |
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1088 generate_option_input_file (const char *file, |
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1089 struct cl_decoded_option *decoded) |
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1090 { |
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1091 decoded->opt_index = OPT_SPECIAL_input_file; |
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1092 decoded->warn_message = NULL; |
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1093 decoded->arg = file; |
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1094 decoded->orig_option_with_args_text = file; |
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1095 decoded->canonical_option_num_elements = 1; |
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1096 decoded->canonical_option[0] = file; |
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1097 decoded->canonical_option[1] = NULL; |
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1098 decoded->canonical_option[2] = NULL; |
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1099 decoded->canonical_option[3] = NULL; |
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1100 decoded->value = 1; |
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1101 decoded->errors = 0; |
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1102 } |
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1103 |
111 | 1104 /* Helper function for listing valid choices and hint for misspelled |
1105 value. CANDIDATES is a vector containing all valid strings, | |
1106 STR is set to a heap allocated string that contains all those | |
1107 strings concatenated, separated by spaces, and the return value | |
1108 is the closest string from those to ARG, or NULL if nothing is | |
1109 close enough. Callers should XDELETEVEC (STR) after using it | |
1110 to avoid memory leaks. */ | |
1111 | |
1112 const char * | |
1113 candidates_list_and_hint (const char *arg, char *&str, | |
1114 const auto_vec <const char *> &candidates) | |
1115 { | |
1116 size_t len = 0; | |
1117 int i; | |
1118 const char *candidate; | |
1119 char *p; | |
1120 | |
1121 FOR_EACH_VEC_ELT (candidates, i, candidate) | |
1122 len += strlen (candidate) + 1; | |
1123 | |
1124 str = p = XNEWVEC (char, len); | |
1125 FOR_EACH_VEC_ELT (candidates, i, candidate) | |
1126 { | |
1127 len = strlen (candidate); | |
1128 memcpy (p, candidate, len); | |
1129 p[len] = ' '; | |
1130 p += len + 1; | |
1131 } | |
1132 p[-1] = '\0'; | |
1133 return find_closest_string (arg, &candidates); | |
1134 } | |
1135 | |
1136 /* Perform diagnostics for read_cmdline_option and control_warning_option | |
1137 functions. Returns true if an error has been diagnosed. | |
1138 LOC and LANG_MASK arguments like in read_cmdline_option. | |
1139 OPTION is the option to report diagnostics for, OPT the name | |
1140 of the option as text, ARG the argument of the option (for joined | |
1141 options), ERRORS is bitmask of CL_ERR_* values. */ | |
1142 | |
1143 static bool | |
1144 cmdline_handle_error (location_t loc, const struct cl_option *option, | |
1145 const char *opt, const char *arg, int errors, | |
1146 unsigned int lang_mask) | |
1147 { | |
1148 if (errors & CL_ERR_DISABLED) | |
1149 { | |
1150 error_at (loc, "command line option %qs" | |
1151 " is not supported by this configuration", opt); | |
1152 return true; | |
1153 } | |
1154 | |
1155 if (errors & CL_ERR_MISSING_ARG) | |
1156 { | |
1157 if (option->missing_argument_error) | |
1158 error_at (loc, option->missing_argument_error, opt); | |
1159 else | |
1160 error_at (loc, "missing argument to %qs", opt); | |
1161 return true; | |
1162 } | |
1163 | |
1164 if (errors & CL_ERR_UINT_ARG) | |
1165 { | |
1166 error_at (loc, "argument to %qs should be a non-negative integer", | |
1167 option->opt_text); | |
1168 return true; | |
1169 } | |
1170 | |
1171 if (errors & CL_ERR_INT_RANGE_ARG) | |
1172 { | |
1173 error_at (loc, "argument to %qs is not between %d and %d", | |
1174 option->opt_text, option->range_min, option->range_max); | |
1175 return true; | |
1176 } | |
1177 | |
1178 if (errors & CL_ERR_ENUM_ARG) | |
1179 { | |
1180 const struct cl_enum *e = &cl_enums[option->var_enum]; | |
1181 unsigned int i; | |
1182 char *s; | |
1183 | |
1184 if (e->unknown_error) | |
1185 error_at (loc, e->unknown_error, arg); | |
1186 else | |
1187 error_at (loc, "unrecognized argument in option %qs", opt); | |
1188 | |
1189 auto_vec <const char *> candidates; | |
1190 for (i = 0; e->values[i].arg != NULL; i++) | |
1191 { | |
1192 if (!enum_arg_ok_for_language (&e->values[i], lang_mask)) | |
1193 continue; | |
1194 candidates.safe_push (e->values[i].arg); | |
1195 } | |
1196 const char *hint = candidates_list_and_hint (arg, s, candidates); | |
1197 if (hint) | |
1198 inform (loc, "valid arguments to %qs are: %s; did you mean %qs?", | |
1199 option->opt_text, s, hint); | |
1200 else | |
1201 inform (loc, "valid arguments to %qs are: %s", option->opt_text, s); | |
1202 XDELETEVEC (s); | |
1203 | |
1204 return true; | |
1205 } | |
1206 | |
1207 return false; | |
1208 } | |
1209 | |
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1210 /* Handle the switch DECODED (location LOC) for the language indicated |
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1211 by LANG_MASK, using the handlers in *HANDLERS and setting fields in |
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1212 OPTS and OPTS_SET and using diagnostic context DC (if not NULL) for |
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1213 diagnostic options. */ |
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1214 |
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1215 void |
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1216 read_cmdline_option (struct gcc_options *opts, |
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1217 struct gcc_options *opts_set, |
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1218 struct cl_decoded_option *decoded, |
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1219 location_t loc, |
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1220 unsigned int lang_mask, |
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1221 const struct cl_option_handlers *handlers, |
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1222 diagnostic_context *dc) |
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1223 { |
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1224 const struct cl_option *option; |
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1225 const char *opt = decoded->orig_option_with_args_text; |
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1226 |
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1227 if (decoded->warn_message) |
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1228 warning_at (loc, 0, decoded->warn_message, opt); |
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1229 |
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1230 if (decoded->opt_index == OPT_SPECIAL_unknown) |
0 | 1231 { |
67
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1232 if (handlers->unknown_option_callback (decoded)) |
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1233 error_at (loc, "unrecognized command line option %qs", decoded->arg); |
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1234 return; |
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1235 } |
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1236 |
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1237 if (decoded->opt_index == OPT_SPECIAL_ignore) |
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1238 return; |
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1239 |
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1240 option = &cl_options[decoded->opt_index]; |
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1241 |
111 | 1242 if (decoded->errors |
1243 && cmdline_handle_error (loc, option, opt, decoded->arg, | |
1244 decoded->errors, lang_mask)) | |
1245 return; | |
0 | 1246 |
67
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1247 if (decoded->errors & CL_ERR_WRONG_LANG) |
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1248 { |
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1249 handlers->wrong_lang_callback (decoded, lang_mask); |
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1250 return; |
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1251 } |
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1252 |
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1253 gcc_assert (!decoded->errors); |
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1254 |
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1255 if (!handle_option (opts, opts_set, decoded, lang_mask, DK_UNSPECIFIED, |
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1256 loc, handlers, false, dc)) |
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1257 error_at (loc, "unrecognized command line option %qs", opt); |
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1258 } |
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1259 |
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1260 /* Set any field in OPTS, and OPTS_SET if not NULL, for option |
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1261 OPT_INDEX according to VALUE and ARG, diagnostic kind KIND, |
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1262 location LOC, using diagnostic context DC if not NULL for |
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1263 diagnostic classification. */ |
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1264 |
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1265 void |
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1266 set_option (struct gcc_options *opts, struct gcc_options *opts_set, |
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1267 int opt_index, int value, const char *arg, int kind, |
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1268 location_t loc, diagnostic_context *dc) |
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1269 { |
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1270 const struct cl_option *option = &cl_options[opt_index]; |
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1271 void *flag_var = option_flag_var (opt_index, opts); |
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1272 void *set_flag_var = NULL; |
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1273 |
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1274 if (!flag_var) |
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1275 return; |
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1276 |
111 | 1277 if ((diagnostic_t) kind != DK_UNSPECIFIED && dc != NULL) |
1278 diagnostic_classify_diagnostic (dc, opt_index, (diagnostic_t) kind, loc); | |
1279 | |
67
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1280 if (opts_set != NULL) |
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1281 set_flag_var = option_flag_var (opt_index, opts_set); |
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1282 |
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1283 switch (option->var_type) |
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1284 { |
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1285 case CLVC_BOOLEAN: |
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1286 *(int *) flag_var = value; |
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1287 if (set_flag_var) |
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1288 *(int *) set_flag_var = 1; |
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1289 break; |
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1290 |
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1291 case CLVC_EQUAL: |
111 | 1292 if (option->cl_host_wide_int) |
1293 *(HOST_WIDE_INT *) flag_var = (value | |
1294 ? option->var_value | |
1295 : !option->var_value); | |
1296 else | |
1297 *(int *) flag_var = (value | |
1298 ? option->var_value | |
1299 : !option->var_value); | |
67
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1300 if (set_flag_var) |
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1301 *(int *) set_flag_var = 1; |
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1302 break; |
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1303 |
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1304 case CLVC_BIT_CLEAR: |
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1305 case CLVC_BIT_SET: |
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1306 if ((value != 0) == (option->var_type == CLVC_BIT_SET)) |
111 | 1307 { |
1308 if (option->cl_host_wide_int) | |
1309 *(HOST_WIDE_INT *) flag_var |= option->var_value; | |
1310 else | |
1311 *(int *) flag_var |= option->var_value; | |
1312 } | |
67
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1313 else |
111 | 1314 { |
1315 if (option->cl_host_wide_int) | |
1316 *(HOST_WIDE_INT *) flag_var &= ~option->var_value; | |
1317 else | |
1318 *(int *) flag_var &= ~option->var_value; | |
1319 } | |
67
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1320 if (set_flag_var) |
111 | 1321 { |
1322 if (option->cl_host_wide_int) | |
1323 *(HOST_WIDE_INT *) set_flag_var |= option->var_value; | |
1324 else | |
1325 *(int *) set_flag_var |= option->var_value; | |
1326 } | |
67
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1327 break; |
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1328 |
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1329 case CLVC_STRING: |
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1330 *(const char **) flag_var = arg; |
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1331 if (set_flag_var) |
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1332 *(const char **) set_flag_var = ""; |
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1333 break; |
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1334 |
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1335 case CLVC_ENUM: |
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1336 { |
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1337 const struct cl_enum *e = &cl_enums[option->var_enum]; |
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1338 |
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1339 e->set (flag_var, value); |
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1340 if (set_flag_var) |
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1341 e->set (set_flag_var, 1); |
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1342 } |
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1343 break; |
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1344 |
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1345 case CLVC_DEFER: |
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1346 { |
111 | 1347 vec<cl_deferred_option> *v |
1348 = (vec<cl_deferred_option> *) *(void **) flag_var; | |
1349 cl_deferred_option p = {opt_index, arg, value}; | |
1350 if (!v) | |
1351 v = XCNEW (vec<cl_deferred_option>); | |
1352 v->safe_push (p); | |
1353 *(void **) flag_var = v; | |
67
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1354 if (set_flag_var) |
111 | 1355 *(void **) set_flag_var = v; |
67
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1356 } |
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1357 break; |
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1358 } |
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1359 } |
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1360 |
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1361 /* Return the address of the flag variable for option OPT_INDEX in |
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1362 options structure OPTS, or NULL if there is no flag variable. */ |
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1363 |
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1364 void * |
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1365 option_flag_var (int opt_index, struct gcc_options *opts) |
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1366 { |
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1367 const struct cl_option *option = &cl_options[opt_index]; |
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1368 |
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1369 if (option->flag_var_offset == (unsigned short) -1) |
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1370 return NULL; |
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1371 return (void *)(((char *) opts) + option->flag_var_offset); |
0 | 1372 } |
67
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1373 |
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1374 /* Return 1 if option OPT_IDX is enabled in OPTS, 0 if it is disabled, |
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1375 or -1 if it isn't a simple on-off switch. */ |
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1376 |
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1377 int |
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1378 option_enabled (int opt_idx, void *opts) |
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1379 { |
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1380 const struct cl_option *option = &(cl_options[opt_idx]); |
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1381 struct gcc_options *optsg = (struct gcc_options *) opts; |
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1382 void *flag_var = option_flag_var (opt_idx, optsg); |
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1383 |
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1384 if (flag_var) |
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1385 switch (option->var_type) |
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1386 { |
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1387 case CLVC_BOOLEAN: |
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1388 return *(int *) flag_var != 0; |
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1389 |
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1390 case CLVC_EQUAL: |
111 | 1391 if (option->cl_host_wide_int) |
1392 return *(HOST_WIDE_INT *) flag_var == option->var_value; | |
1393 else | |
1394 return *(int *) flag_var == option->var_value; | |
67
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1395 |
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1396 case CLVC_BIT_CLEAR: |
111 | 1397 if (option->cl_host_wide_int) |
1398 return (*(HOST_WIDE_INT *) flag_var & option->var_value) == 0; | |
1399 else | |
1400 return (*(int *) flag_var & option->var_value) == 0; | |
67
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1401 |
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1402 case CLVC_BIT_SET: |
111 | 1403 if (option->cl_host_wide_int) |
1404 return (*(HOST_WIDE_INT *) flag_var & option->var_value) != 0; | |
1405 else | |
1406 return (*(int *) flag_var & option->var_value) != 0; | |
67
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1407 |
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1408 case CLVC_STRING: |
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1409 case CLVC_ENUM: |
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1410 case CLVC_DEFER: |
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1411 break; |
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1412 } |
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1413 return -1; |
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1414 } |
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1415 |
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1416 /* Fill STATE with the current state of option OPTION in OPTS. Return |
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1417 true if there is some state to store. */ |
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1418 |
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1419 bool |
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1420 get_option_state (struct gcc_options *opts, int option, |
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1421 struct cl_option_state *state) |
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1422 { |
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1423 void *flag_var = option_flag_var (option, opts); |
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1424 |
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1425 if (flag_var == 0) |
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1426 return false; |
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1427 |
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1428 switch (cl_options[option].var_type) |
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1429 { |
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1430 case CLVC_BOOLEAN: |
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1431 case CLVC_EQUAL: |
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1432 state->data = flag_var; |
111 | 1433 state->size = (cl_options[option].cl_host_wide_int |
1434 ? sizeof (HOST_WIDE_INT) | |
1435 : sizeof (int)); | |
67
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1436 break; |
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1437 |
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1438 case CLVC_BIT_CLEAR: |
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1439 case CLVC_BIT_SET: |
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1440 state->ch = option_enabled (option, opts); |
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1441 state->data = &state->ch; |
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1442 state->size = 1; |
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1443 break; |
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1444 |
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1445 case CLVC_STRING: |
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1446 state->data = *(const char **) flag_var; |
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1447 if (state->data == 0) |
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1448 state->data = ""; |
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1449 state->size = strlen ((const char *) state->data) + 1; |
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1450 break; |
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1451 |
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1452 case CLVC_ENUM: |
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1453 state->data = flag_var; |
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1454 state->size = cl_enums[cl_options[option].var_enum].var_size; |
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|
1455 break; |
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1456 |
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1457 case CLVC_DEFER: |
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1458 return false; |
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1459 } |
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1460 return true; |
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1461 } |
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1462 |
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1463 /* Set a warning option OPT_INDEX (language mask LANG_MASK, option |
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1464 handlers HANDLERS) to have diagnostic kind KIND for option |
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1465 structures OPTS and OPTS_SET and diagnostic context DC (possibly |
111 | 1466 NULL), at location LOC (UNKNOWN_LOCATION for -Werror=). ARG is the |
1467 argument of the option for joined options, or NULL otherwise. If IMPLY, | |
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1468 the warning option in question is implied at this point. This is |
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1469 used by -Werror= and #pragma GCC diagnostic. */ |
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1470 |
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1471 void |
111 | 1472 control_warning_option (unsigned int opt_index, int kind, const char *arg, |
1473 bool imply, location_t loc, unsigned int lang_mask, | |
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1474 const struct cl_option_handlers *handlers, |
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1475 struct gcc_options *opts, |
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1476 struct gcc_options *opts_set, |
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1477 diagnostic_context *dc) |
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1478 { |
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1479 if (cl_options[opt_index].alias_target != N_OPTS) |
111 | 1480 { |
1481 gcc_assert (!cl_options[opt_index].cl_separate_alias | |
1482 && !cl_options[opt_index].cl_negative_alias); | |
1483 if (cl_options[opt_index].alias_arg) | |
1484 arg = cl_options[opt_index].alias_arg; | |
1485 opt_index = cl_options[opt_index].alias_target; | |
1486 } | |
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1487 if (opt_index == OPT_SPECIAL_ignore) |
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1488 return; |
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1489 if (dc) |
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1490 diagnostic_classify_diagnostic (dc, opt_index, (diagnostic_t) kind, loc); |
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1491 if (imply) |
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1492 { |
111 | 1493 const struct cl_option *option = &cl_options[opt_index]; |
1494 | |
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1495 /* -Werror=foo implies -Wfoo. */ |
111 | 1496 if (option->var_type == CLVC_BOOLEAN || option->var_type == CLVC_ENUM) |
1497 { | |
1498 int value = 1; | |
1499 | |
1500 if (arg && *arg == '\0' && !option->cl_missing_ok) | |
1501 arg = NULL; | |
1502 | |
1503 if ((option->flags & CL_JOINED) && arg == NULL) | |
1504 { | |
1505 cmdline_handle_error (loc, option, option->opt_text, arg, | |
1506 CL_ERR_MISSING_ARG, lang_mask); | |
1507 return; | |
1508 } | |
1509 | |
1510 /* If the switch takes an integer, convert it. */ | |
1511 if (arg && option->cl_uinteger) | |
1512 { | |
1513 value = integral_argument (arg); | |
1514 if (value == -1) | |
1515 { | |
1516 cmdline_handle_error (loc, option, option->opt_text, arg, | |
1517 CL_ERR_UINT_ARG, lang_mask); | |
1518 return; | |
1519 } | |
1520 } | |
1521 | |
1522 /* If the switch takes an enumerated argument, convert it. */ | |
1523 if (arg && option->var_type == CLVC_ENUM) | |
1524 { | |
1525 const struct cl_enum *e = &cl_enums[option->var_enum]; | |
1526 | |
1527 if (enum_arg_to_value (e->values, arg, &value, lang_mask)) | |
1528 { | |
1529 const char *carg = NULL; | |
1530 | |
1531 if (enum_value_to_arg (e->values, &carg, value, lang_mask)) | |
1532 arg = carg; | |
1533 gcc_assert (carg != NULL); | |
1534 } | |
1535 else | |
1536 { | |
1537 cmdline_handle_error (loc, option, option->opt_text, arg, | |
1538 CL_ERR_ENUM_ARG, lang_mask); | |
1539 return; | |
1540 } | |
1541 } | |
1542 | |
1543 handle_generated_option (opts, opts_set, | |
1544 opt_index, arg, value, lang_mask, | |
1545 kind, loc, handlers, false, dc); | |
1546 } | |
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1547 } |
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1548 } |