[Bug c++/68508] [5/6 Regression] Internal compiler error with parentheses around return value in C++14 with ASan enabled

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68508

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Nov 26 10:21:42 2015
New Revision: 230933

URL: https://gcc.gnu.org/viewcvs?rev=230933&root=gcc&view=rev
Log:
        PR c++/68508
        * cp-tree.h (cp_ubsan_maybe_instrument_downcast): Add INTYPE argument.
        * cp-ubsan.c (cp_ubsan_maybe_instrument_downcast): Likewise.  Use
        it instead of or in addition to TREE_TYPE (op).  Use
        is_properly_derived_from, return NULL_TREE if TREE_TYPE (intype) and
        TREE_TYPE (type) are the same type minus qualifiers.
        * typeck.c (build_static_cast_1): Adjust callers.

        * g++.dg/ubsan/pr68508.C: New test.

Added:
    branches/gcc-5-branch/gcc/testsuite/g++.dg/ubsan/pr68508.C
Modified:
    branches/gcc-5-branch/gcc/cp/ChangeLog
    branches/gcc-5-branch/gcc/cp/cp-tree.h
    branches/gcc-5-branch/gcc/cp/cp-ubsan.c
    branches/gcc-5-branch/gcc/cp/typeck.c
    branches/gcc-5-branch/gcc/testsuite/ChangeLog