gcc/testsuite/gcc.dg/Walloc-size-larger-than-12.c

   1 /* PR middle-end/82063 - issues with arguments enabled by -Wall
   2    { dg-do compile { target lp64 } }
   3    { dg-options "-O -Walloc-size-larger-than=1EiB -ftrack-macro-expansion=0" } */
   4
   5 typedef __SIZE_TYPE__ size_t;
   6
   7 void sink (void*);
   8
   9 #define T(x) sink (x)
  10
  11 void f (void)
  12 {
  13   size_t n = 0;
  14   T (__builtin_malloc (n));
  15
  16   n = (size_t)1024 * 1024 * 1024 * 1024 * 1024 * 1024;   /* 1 exbibyte (EiB) */
  17   T (__builtin_malloc (n));
  18
  19   n += 1;
  20   T (__builtin_malloc (n));   /* { dg-warning "argument 1 value .1152921504606846977. exceeds maximum object size 1152921504606846976" } */
  21
  22   n = __PTRDIFF_MAX__;
  23   T (__builtin_malloc (n));   /* { dg-warning "exceeds maximum object size" } */
  24
  25   n = __SIZE_MAX__;
  26   T (__builtin_malloc (n));   /* { dg-warning "exceeds maximum object size" } */
  27 }