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 at
       4     inner scope.  */
       5  /* Origin: Joseph Myers <joseph@codesourcery.com> */
       6  /* { dg-do compile } */
       7  /* { dg-options "-std=gnu99" } */
       8  
       9  void f(void) { int isnan(void); } /* { dg-error "prototype declaration" } */
      10  int isnan(a) int a; {} /* { dg-error "number of arguments doesn't match prototype" } */