[PATCH][PR sanitizer/78651] Incorrect exception handling when catch clause uses local class and PIC and sanitizer are active

[Jakub Jelinek]

On Mon, Mar 19, 2018 at 07:28:11PM +0300, Maxim Ostapenko wrote:
> Yes, it works, attaching the patch.

Can you please add a short comment why we do this?  Also, the testcase
needs work, see below.  Ok for trunk with those changes and after a
while for affected release branches as well.

Thanks.

> --- /dev/null
> +++ b/gcc/testsuite/g++.dg/asan/pr78651.C
> @@ -0,0 +1,24 @@
> +// { dg-do run { target fpic } }

Effective target fpic just means that -fpic or -fPIC is supported, nothing
else.  So, you want instead:
// PR sanitizer/78651
// { dg-do run }
// { dg-additional-options "-fpic" { target fpic } }

and verify make check-c++-all RUNTESTFLAGS=asan.exp=pr78651.C fails without
the dwarf2asm.c patch and succeeds with it.

	Jakub