gcc/testsuite/gcc.dg/pr15698-4.c

   1 /* Test diagnostics for old-style definition not matching prior
   2    prototype are present and give correct location for that prototype
   3    (bug 15698).  Unprototyped built-in function with user prototype.  */
   4 /* Origin: Joseph Myers <joseph@codesourcery.com> */
   5 /* { dg-do compile } */
   6 /* { dg-options "-std=gnu99" } */
   7
   8 int isnan(void); /* { dg-error "prototype declaration" } */
   9 int isnan(a) int a; {} /* { dg-error "number of arguments doesn't match prototype" } */