[Bug c++/80955] Macros expanded in definition of user-defined literals

[paolo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80955

--- Comment #2 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Mon Nov  6 10:33:41 2017
New Revision: 254443

URL: https://gcc.gnu.org/viewcvs?rev=254443&root=gcc&view=rev
Log:
/libcpp
2017-11-06  Mukesh Kapoor  <mukesh.kapoor@oracle.com>

        PR c++/80955
        * lex.c (lex_string): When checking for a valid macro for the
        warning related to -Wliteral-suffix (CPP_W_LITERAL_SUFFIX),
        check that the macro name does not start with an underscore
        before calling is_macro().

/gcc/testsuite
2017-11-06  Mukesh Kapoor  <mukesh.kapoor@oracle.com>

        PR c++/80955
        * g++.dg/cpp0x/udlit-macros.C: New.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/udlit-macros.C
Modified:
    trunk/gcc/testsuite/ChangeLog
    trunk/libcpp/ChangeLog
    trunk/libcpp/lex.c