[Bug tree-optimization/59374] [4.8/4.9 Regression] -ftree-slp-vectorize breaks unique_ptr's move constructor

rguenth at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Tue Dec 3 11:47:00 GMT 2013


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59374

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Testcase:


extern void abort (void);

static struct X { void *a; void *b; } a, b;

void __attribute__((noinline)) foo (void)
{
  void *tem = a.b;
  a.b = (void *)0;
  b.b = tem;
  b.a = a.a;
}

int main()
{
  a.b = &a;
  foo ();
  if (b.b != &a)
    abort ();
  return 0;
}



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