r243721 - in /trunk: gcc/ChangeLog gcc/input.c ...

dmalcolm@gcc.gnu.org dmalcolm@gcc.gnu.org
Thu Dec 15 18:05:00 GMT 2016


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



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