gcc/testsuite/gcc.dg/Walloc-size-larger-than-6.c

   1 /* PR middle-end/82063 - issues with arguments enabled by -Wall
   2    { dg-do compile }
   3    { dg-require-effective-target size32plus }
   4    { dg-options "-O -Walloc-size-larger-than=1GiB -ftrack-macro-expansion=0" } */
   5
   6 void sink (void*);
   7
   8 #define T(x) sink (x)
   9
  10 void f (void)
  11 {
  12   __SIZE_TYPE__ n = 0;
  13   T (__builtin_malloc (n));
  14
  15   n = 1024 * 1024 * 1024;   /* 1 gigibyte (GiB) */
  16   T (__builtin_malloc (n));
  17
  18   n += 1;
  19   T (__builtin_malloc (n));   /* { dg-warning "argument 1 value .1073741825. exceeds maximum object size 1073741824" } */
  20
  21   n = __PTRDIFF_MAX__;
  22   T (__builtin_malloc (n));   /* { dg-warning "exceeds maximum object size" } */
  23
  24   n = __SIZE_MAX__;
  25   T (__builtin_malloc (n));   /* { dg-warning "exceeds maximum object size" } */
  26 }