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| author | Mukesh Kapoor <mukesh.kapoor@oracle.com> | 2017-11-06 10:33:41 +0000 |
|---|---|---|
| committer | Paolo Carlini <paolo@gcc.gnu.org> | 2017-11-06 10:33:41 +0000 |
| commit | 7d19c460ed95b5e0988f1ba37ce614ddd8d27aa8 (patch) | |
| tree | 4ef2defce67d2862f4fcf5611615d618f5d1f6ec /libcpp/lex.c | |
| parent | 16f681db1100e78ff9a0cb04fc8fd18719c92839 (diff) | |
| download | gcc-7d19c460ed95b5e0988f1ba37ce614ddd8d27aa8.zip gcc-7d19c460ed95b5e0988f1ba37ce614ddd8d27aa8.tar.gz gcc-7d19c460ed95b5e0988f1ba37ce614ddd8d27aa8.tar.bz2 | |
re PR c++/80955 (Macros expanded in definition of user-defined literals)
/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.
From-SVN: r254443
Diffstat (limited to 'libcpp/lex.c')
| -rw-r--r-- | libcpp/lex.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/libcpp/lex.c b/libcpp/lex.c index 9164a07..8af09e5 100644 --- a/libcpp/lex.c +++ b/libcpp/lex.c @@ -1871,8 +1871,9 @@ lex_raw_string (cpp_reader *pfile, cpp_token *token, const uchar *base, /* If a string format macro, say from inttypes.h, is placed touching a string literal it could be parsed as a C++11 user-defined string literal thus breaking the program. - Try to identify macros with is_macro. A warning is issued. */ - if (is_macro (pfile, cur)) + Try to identify macros with is_macro. A warning is issued. + The macro name should not start with '_' for this warning. */ + if ((*cur != '_') && is_macro (pfile, cur)) { /* Raise a warning, but do not consume subsequent tokens. */ if (CPP_OPTION (pfile, warn_literal_suffix) && !pfile->state.skipping) @@ -2001,8 +2002,9 @@ lex_string (cpp_reader *pfile, cpp_token *token, const uchar *base) /* If a string format macro, say from inttypes.h, is placed touching a string literal it could be parsed as a C++11 user-defined string literal thus breaking the program. - Try to identify macros with is_macro. A warning is issued. */ - if (is_macro (pfile, cur)) + Try to identify macros with is_macro. A warning is issued. + The macro name should not start with '_' for this warning. */ + if ((*cur != '_') && is_macro (pfile, cur)) { /* Raise a warning, but do not consume subsequent tokens. */ if (CPP_OPTION (pfile, warn_literal_suffix) && !pfile->state.skipping) |