[Bug preprocessor/78811] [7 Regression] raw-string-6.c testsuite failure

[dmalcolm at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78811

--- Comment #4 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Author: dmalcolm
Date: Thu Dec 15 18:05:05 2016
New Revision: 243721

URL: https://gcc.gnu.org/viewcvs?rev=243721&root=gcc&view=rev
Log:
Fix use-after-free lexing unterminated raw strings (PR preprocessor/78811)

gcc/ChangeLog:
        PR preprocessor/78680
        PR preprocessor/78811
        * input.c (struct selftest::lexer_test): Add field
        m_implicitly_expect_EOF.
        (selftest::lexer_error_sink): New class.
        (selftest::lexer_error_sink::s_singleton): New global.
        (selftest::lexer_test::lexer_test): Initialize new field
        "m_implicitly_expect_EOF".
        (selftest::lexer_test::~lexer_test): Conditionalize the
        check for the EOF token on the new field.
        (selftest::test_lexer_string_locations_raw_string_unterminated):
        New function.
        (selftest::input_c_tests): Call the new test.

libcpp/ChangeLog:
        PR preprocessor/78680
        PR preprocessor/78811
        * lex.c (_cpp_lex_direct): Only determine the end-location of
        the token and build a range for non-reserved start locations.
        Do not do it for EOF tokens.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/input.c
    trunk/libcpp/ChangeLog
    trunk/libcpp/lex.c