libcpp/

2015-03-09  Edward Smith-Rowland  <3dw4rd@verizon.net>

	PR c++/64626
	* lex.c (lex_number): If a number ends with digit-seps (') skip back
	and let lex_string take them.


gcc/testsuite/

2015-03-09  Edward Smith-Rowland  <3dw4rd@verizon.net>

	PR c++/64626
	g++.dg/cpp1y/pr64626-1.C: New.
	g++.dg/cpp1y/pr64626-2.C: New.
	g++.dg/cpp1y/digit-sep-neg.C: Adjust errors and warnings.