r230928 - in /trunk/gcc: cp/ChangeLog cp/cp-tre...

[jakub@gcc.gnu.org]

Author: jakub
Date: Thu Nov 26 09:52:48 2015
New Revision: 230928

URL: https://gcc.gnu.org/viewcvs?rev=230928&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:
    trunk/gcc/testsuite/g++.dg/ubsan/pr68508.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/cp-tree.h
    trunk/gcc/cp/cp-ubsan.c
    trunk/gcc/cp/typeck.c
    trunk/gcc/testsuite/ChangeLog