gcc/testsuite/gcc.dg/pr19967.c

   1 /* PR middle-end/19967
   2    These functions mentioned below are supposed to return char *.
   3    However, fold_builtin_... had bugs that caused the return types to
   4    be const char *.  */
   5
   6 /* { dg-do compile } */
   7 /* { dg-options "-pedantic" } */
   8
   9 char *strchr(const char *, int);
  10 char *strrchr(const char *, int);
  11 char *index(const char *, int);
  12 char *rindex(const char *, int);
  13 char *strpbrk(const char *, const char *);
  14 char *strstr(const char *, const char *);
  15 char *p;
  16
  17 void
  18 f (void)
  19 {
  20   p = strchr(__func__, 'f');
  21   p = strrchr(__func__, 'f');
  22   p = index(__func__, 'f');
  23   p = rindex(__func__, 'f');
  24   p = strpbrk(__func__, "f");
  25   p = strstr(__func__, "f");
  26 }