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| author | Mark Mitchell <mark@codesourcery.com> | 2003-11-13 19:40:19 +0000 |
|---|---|---|
| committer | Mark Mitchell <mmitchel@gcc.gnu.org> | 2003-11-13 19:40:19 +0000 |
| commit | 49012f5c0f56b39c22a5bf5cf7a1f3626387eda7 (patch) | |
| tree | 716926a333fcf41c178e37db6a6dd1685fe261b5 /gcc/toplev.c | |
| parent | 5681c890b67c0f3c3134fb9897293866594cbd5c (diff) | |
| download | gcc-49012f5c0f56b39c22a5bf5cf7a1f3626387eda7.zip gcc-49012f5c0f56b39c22a5bf5cf7a1f3626387eda7.tar.gz gcc-49012f5c0f56b39c22a5bf5cf7a1f3626387eda7.tar.bz2 | |
re PR c/13029 (static consts and -Wunused-variable)
PR c/13029
* toplev.c (check_global_declarations): Do not warn about unused
static consts.
PR c/13029
* gcc.dg/unused-4.c: Update.
Co-Authored-By: Kean Johnston <jkj@sco.com>
From-SVN: r73554
Diffstat (limited to 'gcc/toplev.c')
| -rw-r--r-- | gcc/toplev.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/gcc/toplev.c b/gcc/toplev.c index a1a1d73..cacbb24 100644 --- a/gcc/toplev.c +++ b/gcc/toplev.c @@ -1720,7 +1720,11 @@ check_global_declarations (tree *vec, int len) /* Warn about static fns or vars defined but not used. */ if (((warn_unused_function && TREE_CODE (decl) == FUNCTION_DECL) - || (warn_unused_variable && TREE_CODE (decl) == VAR_DECL)) + /* We don't warn about "static const" variables because the + "rcs_id" idiom uses that construction. */ + || (warn_unused_variable + && TREE_CODE (decl) == VAR_DECL && ! TREE_READONLY (decl))) + && ! DECL_IN_SYSTEM_HEADER (decl) && ! TREE_USED (decl) /* The TREE_USED bit for file-scope decls is kept in the identifier, to handle multiple external decls in different scopes. */ |