[Bug c++/71182] [6 Regression] parser.c cp_lexer_previous_token sanitizer detects member call on null pointer

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71182

--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Jan 17 20:30:25 2017
New Revision: 244550

URL: https://gcc.gnu.org/viewcvs?rev=244550&root=gcc&view=rev
Log:
        Backported from mainline
        2017-01-04  Jakub Jelinek  <jakub@redhat.com>

        PR c++/71182
        * parser.c (cp_lexer_previous_token): Use vec_safe_address in the
        assertion, as lexer->buffer may be NULL.

        * g++.dg/cpp0x/pr71182.C: New test.

Added:
    branches/gcc-6-branch/gcc/testsuite/g++.dg/cpp0x/pr71182.C
Modified:
    branches/gcc-6-branch/gcc/cp/ChangeLog
    branches/gcc-6-branch/gcc/cp/parser.c
    branches/gcc-6-branch/gcc/testsuite/ChangeLog