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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/66190] [5/6 Regression] ICE:=?UTF-8?Q?=20tree=20code=20=E2=80=98call=5Fexpr=E2=80=99=20is=20not=20supported=20in=20LTO=20streams=20with=20=2Dfsanitize?==null
Date: Mon, 18 May 2015 16:55:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66190

--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
So maybe the following?  Not sure how well it plays with weak vars/fns
though...

--- a/gcc/c-family/c-ubsan.c
+++ b/gcc/c-family/c-ubsan.c
@@ -433,8 +433,9 @@ ubsan_maybe_instrument_reference_or_call (location_t loc,
tree op, tree ptype,
          int save_flag_delete_null_pointer_checks
            = flag_delete_null_pointer_checks;
          flag_delete_null_pointer_checks = 1;
-         if (!tree_single_nonzero_warnv_p (op, &strict_overflow_p)
-             || strict_overflow_p)
+         if ((!tree_single_nonzero_warnv_p (op, &strict_overflow_p)
+              || strict_overflow_p)
+             && !TREE_STATIC (TREE_OPERAND (op, 0)))
            instrument = true;
          flag_delete_null_pointer_checks
            = save_flag_delete_null_pointer_checks;