gcc/testsuite/gcc.dg/Walloc-size-larger-than-2.c

   1 /* PR middle-end/82063 - issues with arguments enabled by -Wall
   2    { dg-do compile }
   3    { dg-options "-O -Walloc-size-larger-than=1KiB -ftrack-macro-expansion=0" }
   4 */
   5
   6 void sink (void*);
   7
   8 #define T(x) sink (x)
   9
  10 void f (void)
  11 {
  12   unsigned n = 0;
  13   T (__builtin_malloc (n));
  14
  15   n = 1024;   /* 1 kibibyte (KB or KiB) */
  16   T (__builtin_malloc (n));
  17
  18   n = 1025;
  19   T (__builtin_malloc (n));   /* { dg-warning "argument 1 value .1025. exceeds maximum object size 1024" } */
  20 }