[Bug tree-optimization/109238] [13 Regression] tst-realloc.i:42:19: error: pointer ‘p’ may be used after ‘realloc’ [-Werror=use-after-free] in glibc tests

[jakub at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109238

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org

--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Reduced testcase:
/* PR tree-optimization/10923 */
/* { dg-do compile } */
/* { dg-options "-O2 -Wall" } */

void foo (void) __attribute__((noreturn));
void bar (void *);

void
baz (void *p)
{
  void *c = __builtin_realloc (p, 16);
  if (c)
    foo ();
  for (;;)
    bar (__builtin_realloc (p, 8));     /* { dg-bogus "pointer 'p' may be used
after '__builtin_realloc'" } */
}