[Bug analyzer/105087] fanalyzer double free false positive with vasprintf

dmalcolm at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Mon Mar 28 19:14:27 GMT 2022


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105087

--- Comment #3 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
#include "analyzer-decls.h"

extern void inner_alloc (void **);

void * __attribute__((noinline))
outer_alloc (void)
{
  void *result;
  inner_alloc (&result);
  return result;
}

void test_1 (void)
{
  void *p, *q;

  p = outer_alloc ();
  q = outer_alloc ();
  __analyzer_eval (p == q); // bug: analyzer thinks this is true
}


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