0
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1 /* Definitions for C parsing and type checking.
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2 Copyright (C) 1987, 1993, 1994, 1995, 1997, 1998,
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3 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009
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4 Free Software Foundation, Inc.
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5
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6 This file is part of GCC.
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7
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8 GCC is free software; you can redistribute it and/or modify it under
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9 the terms of the GNU General Public License as published by the Free
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10 Software Foundation; either version 3, or (at your option) any later
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11 version.
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12
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13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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16 for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with GCC; see the file COPYING3. If not see
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20 <http://www.gnu.org/licenses/>. */
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21
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22 #ifndef GCC_C_TREE_H
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23 #define GCC_C_TREE_H
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24
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25 #include "c-common.h"
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26 #include "toplev.h"
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27 #include "diagnostic.h"
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28
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29 /* struct lang_identifier is private to c-decl.c, but langhooks.c needs to
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30 know how big it is. This is sanity-checked in c-decl.c. */
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31 #define C_SIZEOF_STRUCT_LANG_IDENTIFIER \
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32 (sizeof (struct c_common_identifier) + 3 * sizeof (void *))
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33
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34 /* Language-specific declaration information. */
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35
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36 struct lang_decl GTY(())
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37 {
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38 char dummy;
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39 };
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40
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41 /* In a RECORD_TYPE or UNION_TYPE, nonzero if any component is read-only. */
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42 #define C_TYPE_FIELDS_READONLY(TYPE) TREE_LANG_FLAG_1 (TYPE)
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43
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44 /* In a RECORD_TYPE or UNION_TYPE, nonzero if any component is volatile. */
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45 #define C_TYPE_FIELDS_VOLATILE(TYPE) TREE_LANG_FLAG_2 (TYPE)
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46
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47 /* In a RECORD_TYPE or UNION_TYPE or ENUMERAL_TYPE
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48 nonzero if the definition of the type has already started. */
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49 #define C_TYPE_BEING_DEFINED(TYPE) TYPE_LANG_FLAG_0 (TYPE)
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50
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51 /* In an incomplete RECORD_TYPE or UNION_TYPE, a list of variable
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52 declarations whose type would be completed by completing that type. */
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53 #define C_TYPE_INCOMPLETE_VARS(TYPE) TYPE_VFIELD (TYPE)
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54
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55 /* In an IDENTIFIER_NODE, nonzero if this identifier is actually a
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56 keyword. C_RID_CODE (node) is then the RID_* value of the keyword,
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57 and C_RID_YYCODE is the token number wanted by Yacc. */
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58 #define C_IS_RESERVED_WORD(ID) TREE_LANG_FLAG_0 (ID)
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59
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60 struct lang_type GTY(())
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61 {
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62 /* In a RECORD_TYPE, a sorted array of the fields of the type. */
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63 struct sorted_fields_type * GTY ((reorder ("resort_sorted_fields"))) s;
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64 /* In an ENUMERAL_TYPE, the min and max values. */
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65 tree enum_min;
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66 tree enum_max;
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67 /* In a RECORD_TYPE, information specific to Objective-C, such
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68 as a list of adopted protocols or a pointer to a corresponding
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69 @interface. See objc/objc-act.h for details. */
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70 tree objc_info;
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71 };
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72
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73 /* Record whether a type or decl was written with nonconstant size.
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74 Note that TYPE_SIZE may have simplified to a constant. */
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75 #define C_TYPE_VARIABLE_SIZE(TYPE) TYPE_LANG_FLAG_1 (TYPE)
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76 #define C_DECL_VARIABLE_SIZE(TYPE) DECL_LANG_FLAG_0 (TYPE)
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77
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78 /* Record whether a typedef for type `int' was actually `signed int'. */
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79 #define C_TYPEDEF_EXPLICITLY_SIGNED(EXP) DECL_LANG_FLAG_1 (EXP)
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80
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81 /* For a FUNCTION_DECL, nonzero if it was defined without an explicit
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82 return type. */
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83 #define C_FUNCTION_IMPLICIT_INT(EXP) DECL_LANG_FLAG_1 (EXP)
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84
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85 /* For a FUNCTION_DECL, nonzero if it was an implicit declaration. */
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86 #define C_DECL_IMPLICIT(EXP) DECL_LANG_FLAG_2 (EXP)
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87
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88 /* For FUNCTION_DECLs, evaluates true if the decl is built-in but has
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89 been declared. */
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90 #define C_DECL_DECLARED_BUILTIN(EXP) \
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91 DECL_LANG_FLAG_3 (FUNCTION_DECL_CHECK (EXP))
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92
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93 /* For FUNCTION_DECLs, evaluates true if the decl is built-in, has a
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94 built-in prototype and does not have a non-built-in prototype. */
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95 #define C_DECL_BUILTIN_PROTOTYPE(EXP) \
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96 DECL_LANG_FLAG_6 (FUNCTION_DECL_CHECK (EXP))
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97
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98 /* Record whether a decl was declared register. This is strictly a
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99 front-end flag, whereas DECL_REGISTER is used for code generation;
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100 they may differ for structures with volatile fields. */
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101 #define C_DECL_REGISTER(EXP) DECL_LANG_FLAG_4 (EXP)
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102
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103 /* Record whether a decl was used in an expression anywhere except an
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104 unevaluated operand of sizeof / typeof / alignof. This is only
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105 used for functions declared static but not defined, though outside
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106 sizeof and typeof it is set for other function decls as well. */
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107 #define C_DECL_USED(EXP) DECL_LANG_FLAG_5 (FUNCTION_DECL_CHECK (EXP))
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108
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109 /* Record whether a label was defined in a statement expression which
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110 has finished and so can no longer be jumped to. */
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111 #define C_DECL_UNJUMPABLE_STMT_EXPR(EXP) \
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112 DECL_LANG_FLAG_6 (LABEL_DECL_CHECK (EXP))
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113
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114 /* Record whether a label was the subject of a goto from outside the
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115 current level of statement expression nesting and so cannot be
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116 defined right now. */
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117 #define C_DECL_UNDEFINABLE_STMT_EXPR(EXP) \
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118 DECL_LANG_FLAG_7 (LABEL_DECL_CHECK (EXP))
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119
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120 /* Record whether a label was defined in the scope of an identifier
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121 with variably modified type which has finished and so can no longer
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122 be jumped to. */
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123 #define C_DECL_UNJUMPABLE_VM(EXP) \
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124 DECL_LANG_FLAG_3 (LABEL_DECL_CHECK (EXP))
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125
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126 /* Record whether a label was the subject of a goto from outside the
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127 current level of scopes of identifiers with variably modified type
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128 and so cannot be defined right now. */
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129 #define C_DECL_UNDEFINABLE_VM(EXP) \
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130 DECL_LANG_FLAG_5 (LABEL_DECL_CHECK (EXP))
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131
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132 /* Record whether a variable has been declared threadprivate by
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133 #pragma omp threadprivate. */
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134 #define C_DECL_THREADPRIVATE_P(DECL) DECL_LANG_FLAG_3 (VAR_DECL_CHECK (DECL))
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135
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136 /* Nonzero for a decl which either doesn't exist or isn't a prototype.
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137 N.B. Could be simplified if all built-in decls had complete prototypes
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138 (but this is presently difficult because some of them need FILE*). */
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139 #define C_DECL_ISNT_PROTOTYPE(EXP) \
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140 (EXP == 0 \
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141 || (TYPE_ARG_TYPES (TREE_TYPE (EXP)) == 0 \
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142 && !DECL_BUILT_IN (EXP)))
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143
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144 /* For FUNCTION_TYPE, a hidden list of types of arguments. The same as
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145 TYPE_ARG_TYPES for functions with prototypes, but created for functions
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146 without prototypes. */
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147 #define TYPE_ACTUAL_ARG_TYPES(NODE) TYPE_LANG_SLOT_1 (NODE)
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148
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149 /* Record parser information about an expression that is irrelevant
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150 for code generation alongside a tree representing its value. */
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151 struct c_expr
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152 {
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153 /* The value of the expression. */
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154 tree value;
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155 /* Record the original unary/binary operator of an expression, which may
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156 have been changed by fold, STRING_CST for unparenthesized string
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157 constants, or ERROR_MARK for other expressions (including
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158 parenthesized expressions). */
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159 enum tree_code original_code;
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160 };
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161
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162 /* A kind of type specifier. Note that this information is currently
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163 only used to distinguish tag definitions, tag references and typeof
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164 uses. */
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165 enum c_typespec_kind {
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166 /* A reserved keyword type specifier. */
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167 ctsk_resword,
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168 /* A reference to a tag, previously declared, such as "struct foo".
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169 This includes where the previous declaration was as a different
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170 kind of tag, in which case this is only valid if shadowing that
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171 tag in an inner scope. */
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172 ctsk_tagref,
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173 /* A reference to a tag, not previously declared in a visible
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174 scope. */
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175 ctsk_tagfirstref,
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176 /* A definition of a tag such as "struct foo { int a; }". */
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177 ctsk_tagdef,
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178 /* A typedef name. */
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179 ctsk_typedef,
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180 /* An ObjC-specific kind of type specifier. */
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181 ctsk_objc,
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182 /* A typeof specifier. */
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183 ctsk_typeof
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184 };
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185
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186 /* A type specifier: this structure is created in the parser and
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187 passed to declspecs_add_type only. */
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188 struct c_typespec {
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189 /* What kind of type specifier this is. */
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190 enum c_typespec_kind kind;
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191 /* The specifier itself. */
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192 tree spec;
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193 };
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194
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195 /* A storage class specifier. */
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196 enum c_storage_class {
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197 csc_none,
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198 csc_auto,
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199 csc_extern,
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200 csc_register,
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201 csc_static,
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202 csc_typedef
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203 };
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204
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205 /* A type specifier keyword "void", "_Bool", "char", "int", "float",
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206 "double", "_Decimal32", "_Decimal64", "_Decimal128", "_Fract", "_Accum",
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207 or none of these. */
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208 enum c_typespec_keyword {
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209 cts_none,
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210 cts_void,
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211 cts_bool,
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212 cts_char,
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213 cts_int,
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214 cts_float,
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215 cts_double,
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216 cts_dfloat32,
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217 cts_dfloat64,
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218 cts_dfloat128,
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219 cts_fract,
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220 cts_accum
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221 };
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222
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223 /* A sequence of declaration specifiers in C. */
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224 struct c_declspecs {
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225 /* The type specified, if a single type specifier such as a struct,
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226 union or enum specifier, typedef name or typeof specifies the
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227 whole type, or NULL_TREE if none or a keyword such as "void" or
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228 "char" is used. Does not include qualifiers. */
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229 tree type;
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230 /* The attributes from a typedef decl. */
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231 tree decl_attr;
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232 /* When parsing, the attributes. Outside the parser, this will be
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233 NULL; attributes (possibly from multiple lists) will be passed
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234 separately. */
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235 tree attrs;
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236 /* Any type specifier keyword used such as "int", not reflecting
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237 modifiers such as "short", or cts_none if none. */
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238 enum c_typespec_keyword typespec_word;
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239 /* The storage class specifier, or csc_none if none. */
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240 enum c_storage_class storage_class;
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241 /* Whether any declaration specifiers have been seen at all. */
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242 BOOL_BITFIELD declspecs_seen_p : 1;
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243 /* Whether a type specifier has been seen. */
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244 BOOL_BITFIELD type_seen_p : 1;
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245 /* Whether something other than a storage class specifier or
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246 attribute has been seen. This is used to warn for the
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247 obsolescent usage of storage class specifiers other than at the
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248 start of the list. (Doing this properly would require function
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249 specifiers to be handled separately from storage class
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250 specifiers.) */
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251 BOOL_BITFIELD non_sc_seen_p : 1;
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252 /* Whether the type is specified by a typedef or typeof name. */
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253 BOOL_BITFIELD typedef_p : 1;
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254 /* Whether a struct, union or enum type either had its content
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255 defined by a type specifier in the list or was the first visible
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256 declaration of its tag. */
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257 BOOL_BITFIELD tag_defined_p : 1;
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258 /* Whether the type is explicitly "signed" or specified by a typedef
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259 whose type is explicitly "signed". */
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260 BOOL_BITFIELD explicit_signed_p : 1;
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261 /* Whether the specifiers include a deprecated typedef. */
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262 BOOL_BITFIELD deprecated_p : 1;
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263 /* Whether the type defaulted to "int" because there were no type
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264 specifiers. */
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265 BOOL_BITFIELD default_int_p;
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266 /* Whether "long" was specified. */
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267 BOOL_BITFIELD long_p : 1;
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268 /* Whether "long" was specified more than once. */
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269 BOOL_BITFIELD long_long_p : 1;
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270 /* Whether "short" was specified. */
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271 BOOL_BITFIELD short_p : 1;
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272 /* Whether "signed" was specified. */
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273 BOOL_BITFIELD signed_p : 1;
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274 /* Whether "unsigned" was specified. */
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275 BOOL_BITFIELD unsigned_p : 1;
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276 /* Whether "complex" was specified. */
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277 BOOL_BITFIELD complex_p : 1;
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278 /* Whether "inline" was specified. */
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279 BOOL_BITFIELD inline_p : 1;
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280 /* Whether "__thread" was specified. */
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281 BOOL_BITFIELD thread_p : 1;
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282 /* Whether "const" was specified. */
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283 BOOL_BITFIELD const_p : 1;
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284 /* Whether "volatile" was specified. */
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285 BOOL_BITFIELD volatile_p : 1;
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286 /* Whether "restrict" was specified. */
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287 BOOL_BITFIELD restrict_p : 1;
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288 /* Whether "_Sat" was specified. */
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289 BOOL_BITFIELD saturating_p : 1;
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290 };
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291
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292 /* The various kinds of declarators in C. */
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293 enum c_declarator_kind {
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294 /* An identifier. */
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295 cdk_id,
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296 /* A function. */
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297 cdk_function,
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298 /* An array. */
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299 cdk_array,
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300 /* A pointer. */
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301 cdk_pointer,
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302 /* Parenthesized declarator with nested attributes. */
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303 cdk_attrs
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304 };
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305
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306 /* Information about the parameters in a function declarator. */
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307 struct c_arg_info {
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308 /* A list of parameter decls. */
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309 tree parms;
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310 /* A list of structure, union and enum tags defined. */
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311 tree tags;
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312 /* A list of argument types to go in the FUNCTION_TYPE. */
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313 tree types;
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314 /* A list of non-parameter decls (notably enumeration constants)
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315 defined with the parameters. */
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316 tree others;
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317 /* A list of VLA sizes from the parameters. In a function
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318 definition, these are used to ensure that side-effects in sizes
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319 of arrays converted to pointers (such as a parameter int i[n++])
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320 take place; otherwise, they are ignored. */
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321 tree pending_sizes;
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322 /* True when these arguments had [*]. */
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323 BOOL_BITFIELD had_vla_unspec : 1;
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324 };
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325
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326 /* A declarator. */
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327 struct c_declarator {
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328 /* The kind of declarator. */
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329 enum c_declarator_kind kind;
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330 /* Except for cdk_id, the contained declarator. For cdk_id, NULL. */
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331 struct c_declarator *declarator;
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332 location_t id_loc; /* Currently only set for cdk_id. */
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333 union {
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334 /* For identifiers, an IDENTIFIER_NODE or NULL_TREE if an abstract
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335 declarator. */
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336 tree id;
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337 /* For functions. */
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338 struct c_arg_info *arg_info;
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339 /* For arrays. */
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340 struct {
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341 /* The array dimension, or NULL for [] and [*]. */
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342 tree dimen;
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343 /* The qualifiers inside []. */
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344 int quals;
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345 /* The attributes (currently ignored) inside []. */
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346 tree attrs;
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347 /* Whether [static] was used. */
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348 BOOL_BITFIELD static_p : 1;
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349 /* Whether [*] was used. */
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350 BOOL_BITFIELD vla_unspec_p : 1;
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351 } array;
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352 /* For pointers, the qualifiers on the pointer type. */
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353 int pointer_quals;
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354 /* For attributes. */
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355 tree attrs;
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356 } u;
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357 };
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358
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359 /* A type name. */
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360 struct c_type_name {
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361 /* The declaration specifiers. */
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362 struct c_declspecs *specs;
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363 /* The declarator. */
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364 struct c_declarator *declarator;
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365 };
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366
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367 /* A parameter. */
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368 struct c_parm {
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369 /* The declaration specifiers, minus any prefix attributes. */
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370 struct c_declspecs *specs;
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371 /* The attributes. */
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372 tree attrs;
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373 /* The declarator. */
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374 struct c_declarator *declarator;
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375 };
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376
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377 /* Save and restore the variables in this file and elsewhere
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378 that keep track of the progress of compilation of the current function.
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379 Used for nested functions. */
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380
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381 struct language_function GTY(())
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382 {
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383 struct c_language_function base;
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384 tree x_break_label;
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385 tree x_cont_label;
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386 struct c_switch * GTY((skip)) x_switch_stack;
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387 struct c_arg_info * GTY((skip)) arg_info;
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388 int returns_value;
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389 int returns_null;
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390 int returns_abnormally;
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391 int warn_about_return_type;
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392 };
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393
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394 /* Save lists of labels used or defined in particular contexts.
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395 Allocated on the parser obstack. */
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396
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397 struct c_label_list
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398 {
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399 /* The label at the head of the list. */
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400 tree label;
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401 /* The rest of the list. */
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402 struct c_label_list *next;
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403 };
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404
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405 /* Statement expression context. */
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406
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407 struct c_label_context_se
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408 {
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409 /* The labels defined at this level of nesting. */
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410 struct c_label_list *labels_def;
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411 /* The labels used at this level of nesting. */
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412 struct c_label_list *labels_used;
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413 /* The next outermost context. */
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414 struct c_label_context_se *next;
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415 };
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416
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417 /* Context of variably modified declarations. */
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418
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419 struct c_label_context_vm
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420 {
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421 /* The labels defined at this level of nesting. */
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422 struct c_label_list *labels_def;
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423 /* The labels used at this level of nesting. */
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424 struct c_label_list *labels_used;
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425 /* The scope of this context. Multiple contexts may be at the same
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426 numbered scope, since each variably modified declaration starts a
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427 new context. */
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428 unsigned scope;
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429 /* The next outermost context. */
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430 struct c_label_context_vm *next;
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431 };
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432
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433 /* Used when parsing an enum. Initialized by start_enum. */
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434 struct c_enum_contents
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435 {
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436 /* While defining an enum type, this is 1 plus the last enumerator
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437 constant value. */
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438 tree enum_next_value;
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439
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440 /* Nonzero means that there was overflow computing enum_next_value. */
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441 int enum_overflow;
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442 };
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443
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444
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445 /* in c-parser.c */
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446 extern void c_parse_init (void);
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447
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448 /* in c-aux-info.c */
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449 extern void gen_aux_info_record (tree, int, int, int);
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450
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451 /* in c-decl.c */
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452 extern struct obstack parser_obstack;
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453 extern tree c_break_label;
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454 extern tree c_cont_label;
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455
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456 extern int global_bindings_p (void);
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457 extern void push_scope (void);
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458 extern tree pop_scope (void);
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459
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460 extern void c_init_decl_processing (void);
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461 extern void c_dup_lang_specific_decl (tree);
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462 extern void c_print_identifier (FILE *, tree, int);
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463 extern int quals_from_declspecs (const struct c_declspecs *);
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464 extern struct c_declarator *build_array_declarator (tree, struct c_declspecs *,
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465 bool, bool);
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466 extern tree build_enumerator (struct c_enum_contents *, tree, tree, location_t);
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467 extern tree check_for_loop_decls (void);
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468 extern void mark_forward_parm_decls (void);
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469 extern void declare_parm_level (void);
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470 extern void undeclared_variable (tree, location_t);
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471 extern tree declare_label (tree);
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472 extern tree define_label (location_t, tree);
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473 extern void c_maybe_initialize_eh (void);
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474 extern void finish_decl (tree, tree, tree);
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475 extern tree finish_enum (tree, tree, tree);
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476 extern void finish_function (void);
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477 extern tree finish_struct (tree, tree, tree);
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478 extern struct c_arg_info *get_parm_info (bool);
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479 extern tree grokfield (location_t, struct c_declarator *,
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480 struct c_declspecs *, tree, tree *);
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481 extern tree groktypename (struct c_type_name *);
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482 extern tree grokparm (const struct c_parm *);
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483 extern tree implicitly_declare (tree);
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484 extern void keep_next_level (void);
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485 extern void pending_xref_error (void);
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486 extern void c_push_function_context (void);
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487 extern void c_pop_function_context (void);
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488 extern void push_parm_decl (const struct c_parm *);
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489 extern struct c_declarator *set_array_declarator_inner (struct c_declarator *,
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490 struct c_declarator *);
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491 extern tree c_builtin_function (tree);
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492 extern tree c_builtin_function_ext_scope (tree);
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493 extern void shadow_tag (const struct c_declspecs *);
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494 extern void shadow_tag_warned (const struct c_declspecs *, int);
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495 extern tree start_enum (struct c_enum_contents *, tree);
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496 extern int start_function (struct c_declspecs *, struct c_declarator *, tree);
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497 extern tree start_decl (struct c_declarator *, struct c_declspecs *, bool,
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498 tree);
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499 extern tree start_struct (enum tree_code, tree);
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500 extern void store_parm_decls (void);
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501 extern void store_parm_decls_from (struct c_arg_info *);
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502 extern tree xref_tag (enum tree_code, tree);
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503 extern struct c_typespec parser_xref_tag (enum tree_code, tree);
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504 extern int c_expand_decl (tree);
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505 extern struct c_parm *build_c_parm (struct c_declspecs *, tree,
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506 struct c_declarator *);
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507 extern struct c_declarator *build_attrs_declarator (tree,
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508 struct c_declarator *);
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509 extern struct c_declarator *build_function_declarator (struct c_arg_info *,
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510 struct c_declarator *);
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511 extern struct c_declarator *build_id_declarator (tree);
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512 extern struct c_declarator *make_pointer_declarator (struct c_declspecs *,
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513 struct c_declarator *);
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514 extern struct c_declspecs *build_null_declspecs (void);
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515 extern struct c_declspecs *declspecs_add_qual (struct c_declspecs *, tree);
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516 extern struct c_declspecs *declspecs_add_type (struct c_declspecs *,
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517 struct c_typespec);
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518 extern struct c_declspecs *declspecs_add_scspec (struct c_declspecs *, tree);
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519 extern struct c_declspecs *declspecs_add_attrs (struct c_declspecs *, tree);
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520 extern struct c_declspecs *finish_declspecs (struct c_declspecs *);
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521
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522 /* in c-objc-common.c */
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523 extern bool c_objc_common_init (void);
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524 extern bool c_missing_noreturn_ok_p (tree);
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525 extern bool c_warn_unused_global_decl (const_tree);
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526 extern void c_initialize_diagnostics (diagnostic_context *);
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527 extern bool c_vla_unspec_p (tree x, tree fn);
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528
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529 #define c_build_type_variant(TYPE, CONST_P, VOLATILE_P) \
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530 c_build_qualified_type ((TYPE), \
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531 ((CONST_P) ? TYPE_QUAL_CONST : 0) | \
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532 ((VOLATILE_P) ? TYPE_QUAL_VOLATILE : 0))
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533
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534 /* in c-typeck.c */
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535 extern int in_alignof;
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536 extern int in_sizeof;
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|
537 extern int in_typeof;
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|
538
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|
539 extern struct c_switch *c_switch_stack;
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|
540 extern struct c_label_context_se *label_context_stack_se;
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|
541 extern struct c_label_context_vm *label_context_stack_vm;
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|
542
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|
543 extern tree c_objc_common_truthvalue_conversion (location_t, tree);
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|
544 extern tree require_complete_type (tree);
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545 extern int same_translation_unit_p (const_tree, const_tree);
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546 extern int comptypes (tree, tree);
|
|
547 extern bool c_vla_type_p (const_tree);
|
|
548 extern bool c_mark_addressable (tree);
|
|
549 extern void c_incomplete_type_error (const_tree, const_tree);
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|
550 extern tree c_type_promotes_to (tree);
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|
551 extern struct c_expr default_function_array_conversion (struct c_expr);
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|
552 extern tree composite_type (tree, tree);
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553 extern tree build_component_ref (tree, tree);
|
|
554 extern tree build_array_ref (tree, tree, location_t);
|
|
555 extern tree build_external_ref (tree, int, location_t);
|
|
556 extern void pop_maybe_used (bool);
|
|
557 extern struct c_expr c_expr_sizeof_expr (struct c_expr);
|
|
558 extern struct c_expr c_expr_sizeof_type (struct c_type_name *);
|
|
559 extern struct c_expr parser_build_unary_op (enum tree_code, struct c_expr,
|
|
560 location_t);
|
|
561 extern struct c_expr parser_build_binary_op (location_t,
|
|
562 enum tree_code, struct c_expr,
|
|
563 struct c_expr);
|
|
564 extern tree build_conditional_expr (tree, tree, tree);
|
|
565 extern tree build_compound_expr (tree, tree);
|
|
566 extern tree c_cast_expr (struct c_type_name *, tree);
|
|
567 extern tree build_c_cast (tree, tree);
|
|
568 extern void store_init_value (tree, tree);
|
|
569 extern void error_init (const char *);
|
|
570 extern void pedwarn_init (location_t, int opt, const char *);
|
|
571 extern void maybe_warn_string_init (tree, struct c_expr);
|
|
572 extern void start_init (tree, tree, int);
|
|
573 extern void finish_init (void);
|
|
574 extern void really_start_incremental_init (tree);
|
|
575 extern void push_init_level (int);
|
|
576 extern struct c_expr pop_init_level (int);
|
|
577 extern void set_init_index (tree, tree);
|
|
578 extern void set_init_label (tree);
|
|
579 extern void process_init_element (struct c_expr, bool);
|
|
580 extern tree build_compound_literal (tree, tree);
|
|
581 extern tree c_start_case (tree);
|
|
582 extern void c_finish_case (tree);
|
|
583 extern tree build_asm_expr (tree, tree, tree, tree, bool);
|
|
584 extern tree build_asm_stmt (tree, tree);
|
|
585 extern int c_types_compatible_p (tree, tree);
|
|
586 extern tree c_begin_compound_stmt (bool);
|
|
587 extern tree c_end_compound_stmt (tree, bool);
|
|
588 extern void c_finish_if_stmt (location_t, tree, tree, tree, bool);
|
|
589 extern void c_finish_loop (location_t, tree, tree, tree, tree, tree, bool);
|
|
590 extern tree c_begin_stmt_expr (void);
|
|
591 extern tree c_finish_stmt_expr (tree);
|
|
592 extern tree c_process_expr_stmt (tree);
|
|
593 extern tree c_finish_expr_stmt (tree);
|
|
594 extern tree c_finish_return (tree);
|
|
595 extern tree c_finish_bc_stmt (tree *, bool);
|
|
596 extern tree c_finish_goto_label (tree);
|
|
597 extern tree c_finish_goto_ptr (tree);
|
|
598 extern void c_begin_vm_scope (unsigned int);
|
|
599 extern void c_end_vm_scope (unsigned int);
|
|
600 extern tree c_expr_to_decl (tree, bool *, bool *);
|
|
601 extern tree c_begin_omp_parallel (void);
|
|
602 extern tree c_finish_omp_parallel (tree, tree);
|
|
603 extern tree c_begin_omp_task (void);
|
|
604 extern tree c_finish_omp_task (tree, tree);
|
|
605 extern tree c_finish_omp_clauses (tree);
|
|
606
|
|
607 /* Set to 0 at beginning of a function definition, set to 1 if
|
|
608 a return statement that specifies a return value is seen. */
|
|
609
|
|
610 extern int current_function_returns_value;
|
|
611
|
|
612 /* Set to 0 at beginning of a function definition, set to 1 if
|
|
613 a return statement with no argument is seen. */
|
|
614
|
|
615 extern int current_function_returns_null;
|
|
616
|
|
617 /* Set to 0 at beginning of a function definition, set to 1 if
|
|
618 a call to a noreturn function is seen. */
|
|
619
|
|
620 extern int current_function_returns_abnormally;
|
|
621
|
|
622 /* Nonzero means we are reading code that came from a system header file. */
|
|
623
|
|
624 extern int system_header_p;
|
|
625
|
|
626 /* True means global_bindings_p should return false even if the scope stack
|
|
627 says we are in file scope. */
|
|
628
|
|
629 extern bool c_override_global_bindings_to_false;
|
|
630
|
|
631 /* True means we've initialized exception handling. */
|
|
632 extern bool c_eh_initialized_p;
|
|
633
|
|
634 /* In c-decl.c */
|
|
635 extern void c_finish_incomplete_decl (tree);
|
|
636 extern void c_write_global_declarations (void);
|
|
637
|
|
638 /* In order for the format checking to accept the C frontend
|
|
639 diagnostic framework extensions, you must include this file before
|
|
640 toplev.h, not after. */
|
|
641 #if GCC_VERSION >= 4001
|
|
642 #define ATTRIBUTE_GCC_CDIAG(m, n) __attribute__ ((__format__ (GCC_DIAG_STYLE, m ,n))) ATTRIBUTE_NONNULL(m)
|
|
643 #else
|
|
644 #define ATTRIBUTE_GCC_CDIAG(m, n) ATTRIBUTE_NONNULL(m)
|
|
645 #endif
|
|
646
|
|
647 extern void pedwarn_c90 (location_t, int opt, const char *, ...) ATTRIBUTE_GCC_CDIAG(3,4);
|
|
648 extern void pedwarn_c99 (location_t, int opt, const char *, ...) ATTRIBUTE_GCC_CDIAG(3,4);
|
|
649
|
|
650 #endif /* ! GCC_C_TREE_H */
|