[Bug debug/60438] [4.9 Regression] dwarf2cfi :2239 still assert,not the same cause as PR 59575

[manjian2006 at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60438

--- Comment #12 from linzj <manjian2006 at gmail dot com> ---
I have never known that regression is such a useful resort.

(In reply to Jakub Jelinek from comment #11)
> Reduced testcase for -Os -m32 -fomit-frame-pointer:
> 
> struct A { int a; };
> struct B { A foo (); };
> struct C { B *foo (); };
> int foo (struct C *, float);
> void bar (struct C *);
> void baz (struct A *);
> int a, b, c;
> 
> int
> foo (struct C *y, float x)
> {
>   struct A d;
>   if (c)
>     bar (y);
>   else
>     {
>       C g;
>       g.foo ()->foo ();
>       a = b;
>       d.a = (int) (b * x);
>     }
>   baz (&d);
> }
> 
> Started with r205498.