gcc/testsuite/gcc.dg/float-range-1.c

   1 /* Floating constants outside the range of their type should receive a
   2    just a warning if the target supports infinities. Otherwise, a
   3    pedwarn should be produced.  */
   4 /* Origin: Joseph Myers <jsm@polyomino.org.uk> */
   5 /* { dg-do compile } */
   6 /* { dg-options "-ansi -pedantic-errors -Woverflow" } */
   7
   8 void
   9 f (void)
  10 {
  11   float a = 1e+100000000f; /* { dg-warning "floating constant exceeds range of 'float'" } */
  12   double b = 1e+100000000; /* { dg-warning "floating constant exceeds range of 'double'" } */
  13   long double c = 1e+100000000l; /* { dg-warning "floating constant exceeds range of 'long double'" } */
  14 }