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145
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1 /* PR middle-end/83859 - attribute to establish relation between parameters
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2 for buffer and its size
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3 Test to verify the handling of attribute access (read_only) syntax.
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4 { dg-do compile }
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5 { dg-options "-Wall -ftrack-macro-expansion=0" } */
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6
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7 int __attribute__ ((access))
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8 access_v (void); // { dg-error "wrong number of arguments specified for 'access' attribute" }
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9
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10 int __attribute__ ((access ()))
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11 access___v (void); // { dg-error "wrong number of arguments specified for 'access' attribute" }
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12
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13 int __attribute__ ((access (rdonly)))
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14 rdonly_spelling (void); // { dg-error "attribute .access. invalid mode 'rdonly'; expected one of 'read_only', 'read_write', or 'write_only'" }
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15
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16 int __attribute__ ((access (read_only)))
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17 rdonly_v_all (void); // { dg-error "attribute .access\\(read_only\\). missing an argument" }
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18
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19 int __attribute__ ((access (read_only ())))
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20 rdonly___v_all (void); // { dg-error "attribute 'access' unexpected '\\(' after mode 'read_only'; expected a positional argument or '\\)'" }
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21 // { dg-warning "implicit declaration of function 'read_only'" "" { target *-*-* } .-2 }
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22
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23
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24 int rdonly (void);
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25
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26 int __attribute__ ((access (rdonly ())))
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27 rdonly___v_all (void); // { dg-error "attribute 'access' invalid mode 'rdonly'" }
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28
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29
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30 int __attribute__ ((access (read_only)))
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31 rdonly_i_all (int); // { dg-error "attribute .access\\(read_only\\). missing an argument" }
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32
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33 #define rdonly __attribute__ ((access (read_only)))
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34 #define RDONLY(...) __attribute__ ((access (read_only, __VA_ARGS__)))
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35
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36 int RDONLY (1)
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37 rdonly_pcv_1 (const void*);
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38 int RDONLY (2)
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39 rdonly_i_pcv_2 (int, const void*);
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40 int RDONLY (3)
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41 rdonly_i_i_pcv_3 (int, int, const void*);
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42
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43 int RDONLY (0 + 1)
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44 rdonly_pcv_0p1 (const void*);
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45
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46 int RDONLY (2 - 1)
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47 rdonly_pcv_2m1 (const void*);
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48
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49 int RDONLY (1, 1)
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50 rdonly_pv_pi_1_1 (const void*, const int*); // { dg-error "attribute 'access\\(read_only, 1, 1\\)' positional argument 2 references non-integer argument type 'const void \\*'" }
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51
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52 int RDONLY (1, 2)
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53 rdonly_pcv_pc_1_2 (const void*, char*); // { dg-error "attribute .access\\(read_only, 1, 2\\)' positional argument 2 references non-integer argument type 'char \\*'" }
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54
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55 int RDONLY (2, 1)
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56 rdonly_pcd_pcv_2_1 (const double*, const void*); // { dg-error "attribute .access\\(read_only, 2, 1\\)' positional argument 2 references non-integer argument type 'const double \\*'" }
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57
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58 int RDONLY (2, 2)
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59 rdonly_pi_pcv_2_2 (int*, const void*); // { dg-error "positional argument 2 references non-integer argument type 'const void \\*'" }
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60
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61 int RDONLY (4)
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62 rdonly_i_i_i_4 (int, int, int); // { dg-error "attribute 'access\\(read_only, 4\\)' positional argument 1 value 4 exceeds number of function arguments 3" }
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63
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64 int RDONLY (1)
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65 rdonly_i_1 (int); // { dg-error "attribute 'access\\(read_only, 1\\)' positional argument 1 references non-pointer argument type 'int'" }
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66
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67 // It's okay if the pointer argument is non-const, although a separate
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68 // warning encouraging one might be worthwhile. Maybe something like
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69 // -Wsuggest-const.
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70 int RDONLY (2)
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71 rdonly_i_pc (int, char*);
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72
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73 int RDONLY (-1)
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74 rdonly_pcv_m1 (const void*); // { dg-error "attribute 'access\\(read_only, -1\\)' positional argument 1 invalid value -1" }
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75
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76 int RDONLY (1, -12345)
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77 rdonly_pcv_i_1_m12345 (const void*, int*); // { dg-error "attribute 'access\\(read_only, 1, -12345\\)' positional argument 2 invalid value -12345" }
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78
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79 int RDONLY ("blah")
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80 rdonly_pcv_str (const void*); // { dg-error "attribute 'access\\(read_only, \"blah\"\\)' invalid positional argument 1" }
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81
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82 int RDONLY (1, "foobar")
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83 rdonly_pcv_i_1_str (const void*, int); // { dg-error "attribute 'access\\(read_only, 1, \"foobar\"\\)' invalid positional argument 2" }
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84
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85 // Verify that attributes whose operands reference function pointers
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86 // are rejected.
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87 typedef int F (int, int);
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88 RDONLY (1) void rdwr_pf_1 (F*); // { dg-error "attribute 'access\\(read_only, 1\\)' positional argument 1 references argument of function type 'F' \\{aka 'int\\(int, *int\\)'\\}" }
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89
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90 // Verify pointers to functions.
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91 void RDONLY(2) (*prdonly_pcv2)(int, const void*);
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92 void RDONLY(3, 1) (*prdonly_pcv2_1)(int, void*, const void*);
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93
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94 // Verify types.
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95 typedef RDONLY (2) void rdonly_p2_t (const int*, const char*, const void*);
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96 typedef RDONLY (2) void rdonly_p2_1 (int, const int*);
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