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| author | Andrew Cagney <cagney@gcc.gnu.org> | 2000-05-17 08:15:29 +0000 |
|---|---|---|
| committer | Andrew Cagney <cagney@gcc.gnu.org> | 2000-05-17 08:15:29 +0000 |
| commit | 078721e1a2e6f361f4c7ed6b9017b6fb0d7211a1 (patch) | |
| tree | 2543ce057f160b4e63e78f64be913189cbabb8e5 /gcc/stmt.c | |
| parent | ef94b7f541f59ed3d9f5953a86e026cb217615b6 (diff) | |
| download | gcc-078721e1a2e6f361f4c7ed6b9017b6fb0d7211a1.zip gcc-078721e1a2e6f361f4c7ed6b9017b6fb0d7211a1.tar.gz gcc-078721e1a2e6f361f4c7ed6b9017b6fb0d7211a1.tar.bz2 | |
Add options -Wunused-variable, -Wunused-function, -Wunused-label,
-Wunused-parameter. Retain existing -Wunused behavour. Document.
From-SVN: r33953
Diffstat (limited to 'gcc/stmt.c')
| -rw-r--r-- | gcc/stmt.c | 7 |
1 files changed, 4 insertions, 3 deletions
@@ -1857,12 +1857,13 @@ expand_expr_stmt (exp) except inside a ({...}) where they may be useful. */ if (expr_stmts_for_value == 0 && exp != error_mark_node) { - if (! TREE_SIDE_EFFECTS (exp) && (extra_warnings || warn_unused) + if (! TREE_SIDE_EFFECTS (exp) + && (extra_warnings || warn_unused_value) && !(TREE_CODE (exp) == CONVERT_EXPR && TREE_TYPE (exp) == void_type_node)) warning_with_file_and_line (emit_filename, emit_lineno, "statement with no effect"); - else if (warn_unused) + else if (warn_unused_value) warn_if_unused_value (exp); } @@ -3575,7 +3576,7 @@ warn_about_unused_variables (vars) { tree decl; - if (warn_unused) + if (warn_unused_variable) for (decl = vars; decl; decl = TREE_CHAIN (decl)) if (TREE_CODE (decl) == VAR_DECL && ! TREE_USED (decl) |