https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58155
--- Comment #1 from Ed Smith-Rowland <3dw4rd at verizon dot net> --- Created attachment 33053 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33053&action=edit Patch to not warn if skipping. I still need a testcase or two. 2014-07-02 Edward Smith-Rowland <3dw...@verizon.net> PR c++/58155 - -Wliteral-suffix warns about tokens which are skipped by preprocessor * lex.c (lex_raw_string ()): Do not warn about invalid suffix if skipping. (lex_string ()): Ditto.