Thanks for review. I actually noticed your introduction of cp_build_fold_indirect_ref after I installed my patch.
I'm testing following fix. Martin
>From 63d9cff5c183f3614cff527ff991e1586a9efa5b Mon Sep 17 00:00:00 2001 From: marxin <mli...@suse.cz> Date: Wed, 15 Nov 2017 10:01:51 +0100 Subject: [PATCH] Fix fallout of -fsanitize=vptr. gcc/cp/ChangeLog: 2017-11-15 Martin Liska <mli...@suse.cz> * decl.c (begin_destructor_body): Use cp_build_fold_indirect_ref instead of cp_build_indirect_ref. --- gcc/cp/decl.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/gcc/cp/decl.c b/gcc/cp/decl.c index 041893db937..7e16f7b415b 100644 --- a/gcc/cp/decl.c +++ b/gcc/cp/decl.c @@ -15253,8 +15253,7 @@ begin_destructor_body (void) { tree binfo = TYPE_BINFO (current_class_type); tree ref - = cp_build_indirect_ref (current_class_ptr, RO_NULL, - tf_warning_or_error); + = cp_build_fold_indirect_ref (current_class_ptr); tree vtbl_ptr = build_vfield_ref (ref, TREE_TYPE (binfo)); tree vtbl = build_zero_cst (TREE_TYPE (vtbl_ptr)); -- 2.14.3