gcc/testsuite/gcc.dg/dremf-type-compat-4.c

   1 /* Test for bogus diagnostics for dremf definition, as in bug 16666.
   2    The GNU extension permitting a prototype to override the promotion
   3    of old-style parameter declarations should only apply when the
   4    prototype is visible, not for a built-in prototype.  */
   5 /* { dg-do compile } */
   6 /* { dg-options "" } */
   7
   8 float
   9 dremf(x, y)
  10      float x, y; /* { dg-warning "warning: conflicting types for built-in function 'dremf'" } */
  11 {
  12   return x + y;
  13 }