[Bug sanitizer/77396] address sanitizer crashes if all static global variables are optimized

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77396

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Sep  2 17:11:42 2016
New Revision: 239961

URL: https://gcc.gnu.org/viewcvs?rev=239961&root=gcc&view=rev
Log:
        PR sanitizer/77396
        * sanopt.c: Include gimple-ssa.h, tree-phinodes.h and ssa-iterators.h.
        (sanopt_optimize_walker): Optimize away
        __asan_before_dynamic_init (...) followed by
        __asan_after_dynamic_init () without intervening memory loads/stores.
        * ipa-pure-const.c (special_builtin_state): Handle
        BUILT_IN_ASAN_BEFORE_DYNAMIC_INIT and
        BUILT_IN_ASAN_AFTER_DYNAMIC_INIT.

        * decl2.c (do_static_initialization_or_destruction): Only
        call asan_dynamic_init_call if INITP is true.

        * g++.dg/asan/pr77396.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/asan/pr77396.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/decl2.c
    trunk/gcc/ipa-pure-const.c
    trunk/gcc/sanopt.c
    trunk/gcc/testsuite/ChangeLog