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| author | Neil Booth <neil@daikokuya.co.uk> | 2002-07-23 22:57:49 +0000 |
|---|---|---|
| committer | Neil Booth <neil@gcc.gnu.org> | 2002-07-23 22:57:49 +0000 |
| commit | a69cbaac60d73feb37e6c17abd6f84991dc791a0 (patch) | |
| tree | d7305615fe0d53e288982b583d2c9c637deb2699 /gcc/cppexp.c | |
| parent | b841421a28b7e7c616e58cae4b5e36599f288b7f (diff) | |
| download | gcc-a69cbaac60d73feb37e6c17abd6f84991dc791a0.zip gcc-a69cbaac60d73feb37e6c17abd6f84991dc791a0.tar.gz gcc-a69cbaac60d73feb37e6c17abd6f84991dc791a0.tar.bz2 | |
cppexp.c (parse_defined): Mark macro used.
* cppexp.c (parse_defined): Mark macro used.
* cpphash.h (struct cpp_macro): New member "used".
(_cpp_mark_macro_used, _cpp_warn_if_unused_macro): New.
(struct cpp_reader): New member.
* cppinit.c (cpp_finish_options): Set first_unused_line.
(cpp_finish): Warn of unused macros if requested.
(OPT_TABLE): New switches.
(cpp_handle_option): Handle them.
* cpplib.c (do_undef): Warn if macro unused.
(do_ifdef, do_ifndef): Mark macro used.
* cpplib.h (struct cpp_options): New member.
* cppmacro.c (_cpp_warn_if_unused_macro): New.
(enter_macro_context): Mark macro used.
(_cpp_create_definition): Mark macro unused; warn if unused
when redefined.
* cpptrad.c (scan_out_logcial_line, push_replacement_text):
Mark macros used.
* doc/cppopts.texi: Update.
testsuite:
* gcc.dg/cpp/trad/Wunused.c, gcc.dg/cpp/trad/Wunused.h,
gcc.dg/cpp/Wunused.c, gcc.dg/cpp/Wunused.h: New tests.
From-SVN: r55692
Diffstat (limited to 'gcc/cppexp.c')
| -rw-r--r-- | gcc/cppexp.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/gcc/cppexp.c b/gcc/cppexp.c index b66fea9..5690436 100644 --- a/gcc/cppexp.c +++ b/gcc/cppexp.c @@ -501,6 +501,8 @@ parse_defined (pfile) cpp_error (pfile, DL_WARNING, "this use of \"defined\" may not be portable"); + _cpp_mark_macro_used (node); + /* A possible controlling macro of the form #if !defined (). _cpp_parse_expr checks there was no other junk on the line. */ pfile->mi_ind_cmacro = node; |