PR23057: fix use-after-free due to local token buffer in ParseCXXAmbiguousParenExpression, by Dmitry Polukhin
Differential Revision: http://reviews.llvm.org/D16572
A    test/Parser/cxx-ambig-paren-expr-asan.cpp
M    lib/Parse/ParseExprCXX.cpp


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@259750 91177308-0d34-0410-b5e6-96231b3b80d8