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| author | Joseph Myers <joseph@codesourcery.com> | 2008-04-02 20:42:53 +0100 |
|---|---|---|
| committer | Joseph Myers <jsm28@gcc.gnu.org> | 2008-04-02 20:42:53 +0100 |
| commit | 93d45d9eda934cf8d9ab3e4e4c81fce9ed994a07 (patch) | |
| tree | f70286f28df6c1a7f1cb8695448540d74ba1f396 /gcc/doc/cppopts.texi | |
| parent | e6b69d0e5667a210ed70b677de4778f6f50396a4 (diff) | |
| download | gcc-93d45d9eda934cf8d9ab3e4e4c81fce9ed994a07.tar.gz | |
cppopts.texi (-dU): Document.
gcc:
* doc/cppopts.texi (-dU): Document.
* c-common.h (flag_dump_macros): Update comment.
* c-opts.c (handle_OPT_d): Handle -dU.
* c-ppoutput.c (macro_queue, define_queue, undef_queue,
dump_queued_macros, cb_used_define, cb_used_undef): New.
(init_pp_output): Handle -dU.
(cb_line_change): Call dump_queued_macros.
* toplev.c (decode_d_option): Accept -dU as preprocessor option.
gcc/testsuite:
* gcc.dg/cpp/cmdlne-dU-1.c, gcc.dg/cpp/cmdlne-dU-2.c,
gcc.dg/cpp/cmdlne-dU-3.c, gcc.dg/cpp/cmdlne-dU-4.c,
gcc.dg/cpp/cmdlne-dU-5.c, gcc.dg/cpp/cmdlne-dU-6.c,
gcc.dg/cpp/cmdlne-dU-7.c, gcc.dg/cpp/cmdlne-dU-8.c,
gcc.dg/cpp/cmdlne-dU-9.c, gcc.dg/cpp/cmdlne-dU-10.c,
gcc.dg/cpp/cmdlne-dU-11.c, gcc.dg/cpp/cmdlne-dU-12.c,
gcc.dg/cpp/cmdlne-dU-13.c, gcc.dg/cpp/cmdlne-dU-14.c,
gcc.dg/cpp/cmdlne-dU-15.c, gcc.dg/cpp/cmdlne-dU-16.c,
gcc.dg/cpp/cmdlne-dU-17.c, gcc.dg/cpp/cmdlne-dU-18.c,
gcc.dg/cpp/cmdlne-dU-19.c, gcc.dg/cpp/cmdlne-dU-20.c,
gcc.dg/cpp/cmdlne-dU-21.c, gcc.dg/cpp/cmdlne-dU-22.c: New tests.
libcpp:
* include/cpplib.h (struct cpp_callbacks): Add used_define,
used_undef and before_define.
(NODE_USED): Define.
* directives.c (do_define, do_undef, undefine_macros, do_ifdef,
do_ifndef, cpp_pop_definition): Handle new flag and use new
callbacks.
* expr.c (parse_defined): Handle new flag and use new callbacks.
* macro.c (enter_macro_context, _cpp_free_definition): Handle new
flag and use new callbacks.
From-SVN: r133847
Diffstat (limited to 'gcc/doc/cppopts.texi')
| -rw-r--r-- | gcc/doc/cppopts.texi | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/gcc/doc/cppopts.texi b/gcc/doc/cppopts.texi index dbc8f0e6e67..4b02a87cb8e 100644 --- a/gcc/doc/cppopts.texi +++ b/gcc/doc/cppopts.texi @@ -682,6 +682,14 @@ Like @samp{D}, but emit only the macro names, not their expansions. @opindex dI Output @samp{#include} directives in addition to the result of preprocessing. + +@item U +@opindex dU +Like @samp{D} except that only macros that are expanded, or whose +definedness is tested in preprocessor directives, are output; the +output is delayed until the use or test of the macro; and +@samp{#undef} directives are also output for macros tested but +undefined at the time. @end table @item -P |