[ASan] Fix for TTC-5 (PR sanitizer/81697).

[ASan] Fix for TTC-5 (PR sanitizer/81697).

gcc/

2017-11-30  Maxim Ostapenko  <m.ostapenko@samsung.com>

PR sanitizer/81697
* asan.c (asan_protect_global): Add new ignore_decl_rtl_set_p
parameter. Return true if ignore_decl_rtl_set_p is true and other
conditions are satisfied.
* asan.h (asan_protect_global): Add new parameter.
* varasm.c (categorize_decl_for_section): Pass true as second parameter
to asan_protect_global calls.

gcc/testsuite/

2017-11-30  Maxim Ostapenko  <m.ostapenko@samsung.com>

PR sanitizer/81697
* c-c++-common/asan/pr81697.c: New test.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@255283 138bc75d-0d04-0410-961f-82ee72b054a4

Change-Id: I4568c3d228286d2a372c1e5c3a1dde62561ace74