gcc/testsuite/gcc.dg/qual-return-1.c

   1 /* Test for warnings for qualified function return types.  */
   2 /* Origin: Joseph Myers <jsm28@cam.ac.uk> */
   3 /* { dg-do compile } */
   4 /* { dg-options "-std=gnu99 -W" } */
   5
   6 /* Qualifying a function return type makes no sense.  */
   7
   8 const int int_fn (void); /* { dg-warning "qualifiers" "int decl" } */
   9 const int (*int_ptr) (void); /* { dg-warning "qualifiers" "int ptr" } */
  10 const int int_fn2 (void) { return 0; } /* { dg-warning "qualifiers" "int defn" } */
  11
  12 const void void_fn (void); /* { dg-warning "qualifiers" "void decl" } */
  13 const void (*void_ptr) (void); /* { dg-warning "qualifiers" "void ptr" } */
  14 const void void_fn2 (void) { } /* { dg-warning "qualifiers" "void defn" } */
  15
  16 /* "volatile void" is a GNU extension, so only warn at -pedantic.  */
  17
  18 volatile void vvoid_fn (void);
  19 volatile void (*vvoid_ptr) (void);
  20 volatile void vvoid_fn2 (void) { }
  21
  22 int *restrict ip_fn (void); /* { dg-warning "qualifiers" "restrict decl" } */
  23 int *restrict (*ip_ptr) (void); /* { dg-warning "qualifiers" "restrict ptr" } */
  24 int *restrict ip_fn2 (void) { return (int *)0; }; /* { dg-warning "qualifiers" "restrict defn" } */