diff options
| author | neil <neil@138bc75d-0d04-0410-961f-82ee72b054a4> | 2002-07-23 22:57:49 +0000 |
|---|---|---|
| committer | neil <neil@138bc75d-0d04-0410-961f-82ee72b054a4> | 2002-07-23 22:57:49 +0000 |
| commit | 71a7c28254983fb0228469f2b602347a4717dfec (patch) | |
| tree | d7305615fe0d53e288982b583d2c9c637deb2699 /gcc/testsuite/gcc.dg/cpp | |
| parent | 44a8c9661982dea2fa5a0b8b22d96d67bdde8cc8 (diff) | |
| download | gcc-71a7c28254983fb0228469f2b602347a4717dfec.tar.gz | |
* 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.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@55692 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/testsuite/gcc.dg/cpp')
| -rw-r--r-- | gcc/testsuite/gcc.dg/cpp/Wunused.c | 32 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/cpp/Wunused.h | 1 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/cpp/trad/Wunused.c | 31 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/cpp/trad/Wunused.h | 1 |
4 files changed, 65 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/cpp/Wunused.c b/gcc/testsuite/gcc.dg/cpp/Wunused.c new file mode 100644 index 00000000000..f134f55a159 --- /dev/null +++ b/gcc/testsuite/gcc.dg/cpp/Wunused.c @@ -0,0 +1,32 @@ +/* Copyright (C) 2002 Free Software Foundation, Inc. */ + +/* { dg-do preprocess } */ +/* { dg-options -Wunused-macros } */ + +/* Test everything related to -Wunused-macros. + + Source: Neil Booth, 23 Jul 2002. */ + +#include "Wunused.h" + +#define used1 /* { dg-bogus "used" } */ +#define used2 /* { dg-bogus "used" } */ +#define used3 /* { dg-bogus "used" } */ +#define used4 used4 /* { dg-bogus "used" } */ + +#define unused5 /* { dg-warning "used" } */ +#define unused6 /* { dg-warning "used" } */ +#define unused7() /* { dg-warning "used" } */ + +#if defined used1 +#endif +#ifdef used2 +#endif +#ifndef used3 +#endif +used4 + +unused7 +#undef unused5 +#define unused6 +unused6 diff --git a/gcc/testsuite/gcc.dg/cpp/Wunused.h b/gcc/testsuite/gcc.dg/cpp/Wunused.h new file mode 100644 index 00000000000..8b54412bdd4 --- /dev/null +++ b/gcc/testsuite/gcc.dg/cpp/Wunused.h @@ -0,0 +1 @@ +#define unused_but_ok diff --git a/gcc/testsuite/gcc.dg/cpp/trad/Wunused.c b/gcc/testsuite/gcc.dg/cpp/trad/Wunused.c new file mode 100644 index 00000000000..fd81a27ecc7 --- /dev/null +++ b/gcc/testsuite/gcc.dg/cpp/trad/Wunused.c @@ -0,0 +1,31 @@ +/* Copyright (C) 2002 Free Software Foundation, Inc. */ + +/* { dg-do preprocess } */ +/* { dg-options "-Wunused-macros -traditional-cpp" } */ + +/* Test everything related to -Wunused-macros. + + Source: Neil Booth, 23 Jul 2002. */ + +#include "Wunused.h" + +#define used1 /* { dg-bogus "used" } */ +#define used2 /* { dg-bogus "used" } */ +#define used3 /* { dg-bogus "used" } */ +#define used4 something /* { dg-bogus "used" } */ + +#define unused5 /* { dg-warning "used" } */ +#define unused6 /* { dg-warning "used" } */ +#define unused7() /* { dg-warning "used" } */ + +#if defined used1 +#endif +#ifdef used2 +#endif +#ifndef used3 +#endif +used4 + +#undef unused5 +#define unused6 +unused6 diff --git a/gcc/testsuite/gcc.dg/cpp/trad/Wunused.h b/gcc/testsuite/gcc.dg/cpp/trad/Wunused.h new file mode 100644 index 00000000000..8b54412bdd4 --- /dev/null +++ b/gcc/testsuite/gcc.dg/cpp/trad/Wunused.h @@ -0,0 +1 @@ +#define unused_but_ok |