Re: [PATCH v3][PR lto/79061] Fix LTO plus ASAN fails with "AddressSanitizer: initialization-order-fiasco".

[Maxim Ostapenko]

Hi,

PR lto/79061 actually affects gcc-{5, 6}-branch too
Is it OK to apply following patch on branches?

-Maxim

gcc/ChangeLog:

2017-02-02  Maxim Ostapenko  <m.ostape...@samsung.com>

	PR lto/79061
	* asan.c (asan_add_global): Force has_dynamic_init to zero in LTO mode.

diff --git a/gcc/asan.c b/gcc/asan.c
index 398a508..0f55dc0 100644
--- a/gcc/asan.c
+++ b/gcc/asan.c
@@ -2275,7 +2275,11 @@ asan_add_global (tree decl, tree type, vec<constructor_elt, va_gc> *v)
   CONSTRUCTOR_APPEND_ELT (vinner, NULL_TREE,
 			  fold_convert (const_ptr_type_node, module_name_cst));
   varpool_node *vnode = varpool_node::get (decl);
-  int has_dynamic_init = vnode ? vnode->dynamically_initialized : 0;
+  int has_dynamic_init = 0;
+  /* FIXME: Enable initialization order fiasco detection in LTO mode once
+     proper fix for PR 79061 will be applied.  */
+  if (!in_lto_p)
+    has_dynamic_init = vnode ? vnode->dynamically_initialized : 0;
   CONSTRUCTOR_APPEND_ELT (vinner, NULL_TREE,
 			  build_int_cst (uptr, has_dynamic_init));
   tree locptr = NULL_TREE;