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| author | Jason Thorpe <thorpej@wasabisystems.com> | 2002-04-07 03:12:23 +0000 |
|---|---|---|
| committer | Jason Thorpe <thorpej@gcc.gnu.org> | 2002-04-07 03:12:23 +0000 |
| commit | 477cdac7549280eaf6d79ab9dce15e0099e01ce0 (patch) | |
| tree | a89c2d17b9489b6bd19288f037013b3eaa28a891 /gcc/doc | |
| parent | 03da52864c9025823694a9b5fabc472c6e534658 (diff) | |
| download | gcc-477cdac7549280eaf6d79ab9dce15e0099e01ce0.zip gcc-477cdac7549280eaf6d79ab9dce15e0099e01ce0.tar.gz gcc-477cdac7549280eaf6d79ab9dce15e0099e01ce0.tar.bz2 | |
cppinit.c (cpp_create_reader): Initialize discard_comments_in_macro_exp.
* cppinit.c (cpp_create_reader): Initialize
discard_comments_in_macro_exp.
(COMMAND_LINE_OPTIONS): Add "-CC" option.
(cpp_handle_option): Handle "-CC" option.
* cpplex.c (save_comment): If saving a C++ comment in
a directive, convert it to a C comment.
(_cpp_lex_direct): Pass second comment start character to
save_comment to indicate comment type.
* cpplib.c (_cpp_handle_directive): If processing
a "#define" directive and discard_comments_in_macro_exp
is false, re-enable saving of comments.
(lex_macro_node): If discard_comments_in_macro_exp is false,
discard any comments before the macro identifier.
* cpplib.h (struct cpp_options): Add discard_comments_in_macro_exp
member.
* cppmacro.c (cpp_get_token): If expanding a macro while
processing a directive, discard any comments we might encounter.
(parse_params): If discard_comments_in_macro_exp is false,
ignore comments in the macro parameter list.
* gcc.c (cpp_unique_options): Add "-CC" option.
(option_map): Map "--comments-in-macros" to "-CC".
* doc/cppopts.texi: Document "-CC" option.
* f/lang-specs.h: Add "-CC" option.
* testsuite/gcc.dg/cpp/maccom1.c: New test.
* testsuite/gcc.dg/cpp/maccom2.c: New test.
* testsuite/gcc.dg/cpp/maccom3.c: New test.
* testsuite/gcc.dg/cpp/maccom4.c: New test.
* testsuite/gcc.dg/cpp/maccom5.c: New test.
* testsuite/gcc.dg/cpp/maccom6.c: New test.
From-SVN: r51975
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/cppopts.texi | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/gcc/doc/cppopts.texi b/gcc/doc/cppopts.texi index 5958abd..68bd439 100644 --- a/gcc/doc/cppopts.texi +++ b/gcc/doc/cppopts.texi @@ -527,6 +527,19 @@ For example, comments appearing at the start of what would be a directive line have the effect of turning that line into an ordinary source line, since the first token on the line is no longer a @samp{#}. +@item -CC +Do not discard comments, including during macro expansion. This is +like @option{-C}, except that comments contained within macros are +also passed through to the output file where the macro is expanded. + +In addition to the side-effects of the @option{-C} option, the +@option{-CC} option causes all C++-style comments inside a macro +to be converted to C-style comments. This is to prevent later use +of that macro from inadvertently commenting out the remainer of +the source line. + +The @option{-CC} option is generally used to support lint comments. + @item -gcc @opindex gcc Define the macros @sc{__gnuc__}, @sc{__gnuc_minor__} and |