gcc/testsuite/gcc.dg/Wtype-limits2.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-Wtype-limits" } */
   3 /* { dg-require-effective-target sync_char_short } */
   4
   5 #include <stdatomic.h>
   6
   7 unsigned foo (unsigned char *x)
   8 {
   9   if (atomic_load (x) > 1000) /* { dg-warning "comparison is always false due to limited range of data type" } */
  10     return 0;
  11   return 1;
  12 }