Viewing file:  attr-access-write-only.c (4.06 KB) -rw-r--r--
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/* PR middle-end/83859 - attribute to establish relation between parameters
for buffer and its size
Test to verify the handling of attribute access (write_only) syntax.
{ dg-do compile }
{ dg-options "-Wall -ftrack-macro-expansion=0" } */
int __attribute__ ((access))
access_v (void); // { dg-error "wrong number of arguments specified for 'access' attribute" }
int __attribute__ ((access ()))
access___v (void); // { dg-error "wrong number of arguments specified for 'access' attribute" }
int __attribute__ ((access (wronly)))
wronly_spelling (void); // { dg-error "attribute .access. invalid mode 'wronly'; expected one of 'read_only', 'read_write', 'write_only', or 'none'" }
int __attribute__ ((access (read_only)))
wronly_v_all (void); // { dg-error "attribute .access\\(read_only\\). missing an argument" }
int __attribute__ ((access (read_only ())))
wronly___v_all (void); // { dg-error "attribute 'access' unexpected '\\(' after mode 'read_only'; expected a positional argument or '\\)'" }
// { dg-warning "implicit declaration of function 'read_only'" "" { target *-*-* } .-2 }
int wronly (void);
int __attribute__ ((access (wronly ())))
wronly___v_all (void); // { dg-error "attribute 'access' invalid mode 'wronly'" }
#define WRONLY(...) __attribute__ ((access (write_only, __VA_ARGS__)))
int WRONLY (1)
wronly_pcv_1 (void*);
int WRONLY (2)
wronly_i_pcv_2 (int, void*);
int WRONLY (3)
wronly_i_i_pcv_3 (int, int, void*);
int WRONLY (0 + 1)
wronly_pcv_0p1 (void*);
int WRONLY (2 - 1)
wronly_pcv_2m1 (void*);
int WRONLY (1, 1)
wronly_pv_pi_1_1 (void*, const int*); // { dg-error "attribute 'access\\(write_only, 1, 1\\)' positional argument 2 references non-integer argument type 'void \\*'" }
int WRONLY (1, 2)
wronly_pcv_pc_1_2 (void*, char*); // { dg-error "attribute .access\\(write_only, 1, 2\\)' positional argument 2 references non-integer argument type 'char \\*'" }
int WRONLY (2, 1)
wronly_pcd_pcv_2_1 (const double*, void*); // { dg-error "attribute .access\\(write_only, 2, 1\\)' positional argument 2 references non-integer argument type 'const double \\*'" }
int WRONLY (2, 2)
wronly_pi_pcv_2_2 (int*, void*); // { dg-error "positional argument 2 references non-integer argument type 'void \\*'" }
int WRONLY (4)
wronly_i_i_i_4 (int, int, int); // { dg-error "attribute 'access\\(write_only, 4\\)' positional argument 1 value 4 exceeds number of function arguments 3" }
int WRONLY (1)
wronly_i_1 (int); // { dg-error "attribute 'access\\(write_only, 1\\)' positional argument 1 references non-pointer argument type 'int'" }
int WRONLY (2)
wronly_i_pc (int, const char*); // { dg-error "attribute 'access\\(write_only, 2\\)' positional argument 1 references 'const'-qualified argument type 'const char \\*'" }
int WRONLY (-1)
wronly_pcv_m1 (void*); // { dg-error "attribute 'access\\(write_only, -1\\)' positional argument 1 invalid value -1" }
int WRONLY (1, -12345)
wronly_pcv_i_1_m12345 (void*, int*); // { dg-error "attribute 'access\\(write_only, 1, -12345\\)' positional argument 2 invalid value -12345" }
int WRONLY ("blah")
wronly_pcv_str (void*); // { dg-error "attribute 'access\\(write_only, \"blah\"\\)' invalid positional argument 1" }
int WRONLY (1, "foobar")
wronly_pcv_i_1_str (void*, int); // { dg-error "attribute 'access\\(write_only, 1, \"foobar\"\\)' invalid positional argument 2" }
// Verify that attributes whose operands reference function pointers
// are rejected.
typedef int F (int, int);
WRONLY (1) void wronly_pf_1 (F*); // { dg-error "attribute 'access\\(write_only, 1\\)' positional argument 1 references argument of function type 'F' \\{aka 'int\\(int, *int\\)'\\}" }
// Verify pointers to functions.
void WRONLY(2) (*pwronly_pcv2)(int, void*);
void WRONLY(3, 1) (*pwronly_pcv2_1)(int, void*, void*);
void WRONLY(1, 2) (*pwronly_i_pcv_1_2)(int, void*); // { dg-error "attribute 'access\\(write_only, 1, 2\\)' positional argument 1 references non-pointer argument type 'int'" }
// Verify types.
typedef WRONLY (2) void wronly_p2_t (const int*, char*, const void*);
typedef WRONLY (2) void wronly_p2_1 (int, int*);
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