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| author | Nick Clifton <nickc@cygnus.com> | 1997-12-21 08:24:48 -0700 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 1997-12-21 08:24:48 -0700 |
| commit | d300e55140f3d2b7c72b6e2c54aa8117508a278e (patch) | |
| tree | 0b8fadd5175f1003cd62fe44249ac0f84a09d3d4 /gcc/invoke.texi | |
| parent | f9fc59e8c7d867eed481ec74433c8e582f95ce39 (diff) | |
| download | gcc-d300e55140f3d2b7c72b6e2c54aa8117508a278e.zip gcc-d300e55140f3d2b7c72b6e2c54aa8117508a278e.tar.gz gcc-d300e55140f3d2b7c72b6e2c54aa8117508a278e.tar.bz2 | |
c-pragma.c (handle_pragma_token): Generate warning messages about unknown pragmas if warn_unknown_pragmas is set.
* c-pragma.c (handle_pragma_token): Generate warning messages
about unknown pragmas if warn_unknown_pragmas is set.
* c-decl.c (c_decode_option): Parse -Wunknown-pragmas command
line option to set variable: warn_unknown_pragmas.
From-SVN: r17168
Diffstat (limited to 'gcc/invoke.texi')
| -rw-r--r-- | gcc/invoke.texi | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/gcc/invoke.texi b/gcc/invoke.texi index f8c9f9a..d1f8756 100644 --- a/gcc/invoke.texi +++ b/gcc/invoke.texi @@ -126,6 +126,7 @@ in the following sections. -Wsign-compare -Wstrict-prototypes -Wswitch -Wsynth -Wtemplate-debugging -Wtraditional -Wtrigraphs -Wundef -Wuninitialized -Wunused -Wwrite-strings +-Wunknown-pragmas @end smallexample @item Debugging Options @@ -1400,6 +1401,15 @@ members. When using templates in a C++ program, warn if debugging is not yet fully available (C++ only). +@item -Wunknown-pragmas +@cindex warning for unknown pragmas +@cindex unknown pragmas, warning +@cindex pragmas, warning of unknown +Warn when a #pragma directive is encountered which is not understood by +GCC. If this command line option is used, warnings will even be issued +for unknown pragmas in system header files. This is not the case if +the warnings were only enabled by the @samp{-Wall} command line option. + @item -Wall All of the above @samp{-W} options combined. This enables all the warnings about constructions that some users consider questionable, and |