gcc/testsuite/gcc.dg/Walloc-size-larger-than-7.c

   1 /* PR middle-end/82063 - issues with arguments enabled by -Wall
   2    { dg-do compile }
   3    { dg-options "-O -Walloc-size-larger-than=1GB -ftrack-macro-expansion=0" } */
   4
   5 void sink (void*);
   6
   7 #define T(x) sink (x)
   8
   9 void f (void)
  10 {
  11   __SIZE_TYPE__ n = 0;
  12   T (__builtin_malloc (n));
  13
  14   n = 1000 * 1000 * 1000;   /* 1 gigabyte (GB) */
  15   T (__builtin_malloc (n));
  16
  17   n += 1;
  18   T (__builtin_malloc (n));   /* { dg-warning "argument 1 value .1000000001. exceeds maximum object size 1000000000" } */
  19
  20   n = __PTRDIFF_MAX__;
  21   T (__builtin_malloc (n));   /* { dg-warning "exceeds maximum object size" } */
  22
  23   n = __SIZE_MAX__;
  24   T (__builtin_malloc (n));   /* { dg-warning "exceeds maximum object size" } */
  25 }