[Bug ipa/68857] [6 regression] FAIL: gcc.target/i386/mpx/vararg-8-nov.c -O3 -g (internal compiler error)

[ienkovich at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68857

--- Comment #2 from Ilya Enkovich <ienkovich at gcc dot gnu.org> ---
Here is a smaller reproducer:

__builtin_va_list a;
void foo (int *p1, ...)
{
  __builtin_va_start(a, p1);
}
void test() { foo(0); }