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007-01-29 Manuel Lopez-Ibanez <manu@gcc.gnu.org> 

* c-decl.c (pop_scope): Replace warnings with call to
	warn_for_unused_label.
	* c-common.h (warn_for_unused_label): Declare.
	* c-common.c (warn_for_unused_label): Define.
cp/
	* decl.c (pop_label): Replace warning with call to
	warn_for_unused_label.

From-SVN: r121310
This commit is contained in:
Manuel López-Ibáñez 2007-01-29 21:05:58 +00:00
parent 971005966f
commit c616e51b00
6 changed files with 31 additions and 9 deletions
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7
gcc/ChangeLog
View File

@ -1,3 +1,10 @@
007-01-29 Manuel Lopez-Ibanez <manu@gcc.gnu.org>
* c-decl.c (pop_scope): Replace warnings with call to
warn_for_unused_label.
* c-common.h (warn_for_unused_label): Declare.
* c-common.c (warn_for_unused_label): Define.
2007-01-29 Manuel Lopez-Ibanez <manu@gcc.gnu.org>
* tree-optimize.c (update_inlined_to_pointers): Delete unused

13
gcc/c-common.c
View File

@ -6758,5 +6758,18 @@ warn_about_parentheses (enum tree_code code, enum tree_code code_left,
"have their mathematical meaning");
}
/* If LABEL (a LABEL_DECL) has not been used, issue a warning. */
void
warn_for_unused_label (tree label)
{
if (!TREE_USED (label))
{
if (DECL_INITIAL (label))
warning (OPT_Wunused_label, "label %q+D defined but not used", label);
else
warning (OPT_Wunused_label, "label %q+D declared but not defined", label);
}
}
#include "gt-c-common.h"

1
gcc/c-common.h
View File

@ -868,6 +868,7 @@ extern tree builtin_type_for_size (int, bool);
extern void warn_array_subscript_with_type_char (tree);
extern void warn_about_parentheses (enum tree_code, enum tree_code,
enum tree_code);
extern void warn_for_unused_label (tree label);
/* In c-gimplify.c */

10
gcc/c-decl.c
View File

@ -761,13 +761,9 @@ pop_scope (void)
error ("label %q+D used but not defined", p);
DECL_INITIAL (p) = error_mark_node;
}
else if (!TREE_USED (p) && warn_unused_label)
{
if (DECL_INITIAL (p))
warning (0, "label %q+D defined but not used", p);
else
warning (0, "label %q+D declared but not defined", p);
}
else
warn_for_unused_label (p);
/* Labels go in BLOCK_VARS. */
TREE_CHAIN (p) = BLOCK_VARS (block);
BLOCK_VARS (block) = p;

5
gcc/cp/ChangeLog
View File

@ -1,3 +1,8 @@
2007-01-29 Manuel Lopez-Ibanez <manu@gcc.gnu.org>
* decl.c (pop_label): Replace warning with call to
warn_for_unused_label.
2007-01-28 Andrew Pinski <pinskia@gmail.com>
PR C++/28988

4
gcc/cp/decl.c
View File

@ -365,8 +365,8 @@ pop_label (tree label, tree old_value)
/* Avoid crashing later. */
define_label (location, DECL_NAME (label));
}
else if (!TREE_USED (label))
warning (OPT_Wunused_label, "label %q+D defined but not used", label);
else
warn_for_unused_label (label);
}
SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (label), old_value);