view gcc/testsuite/gcc.dg/Walloc-size-larger-than-14.c @ 158:494b0b89df80 default tip

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author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Mon, 25 May 2020 18:13:55 +0900
parents 84e7813d76e9
children
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/* PR middle-end/82063 - issues with arguments enabled by -Wall
   { dg-do compile }
   { dg-options "-O -Walloc-size-larger-than=123456789123456789123456789123456789 -ftrack-macro-expansion=0" } */

typedef __SIZE_TYPE__ size_t;

void sink (void*);

#define T(x) sink (x)

/* Verify that an exceedingly large -Walloc-size-larger-than argument
   with no suffix is accepted and treated as infinite.  */

void f (void)
{
  size_t n = 0;
  T (__builtin_malloc (n));

  n = __PTRDIFF_MAX__;
  T (__builtin_malloc (n));

  n += 1;
  T (__builtin_malloc (n));

  n = __SIZE_MAX__ - 1;
  T (__builtin_malloc (n));

  n = __SIZE_MAX__;
  T (__builtin_malloc (n));
}