Daily bump.

[pf3gnuchains/gcc-fork.git] / gcc / c-decl.c

diff --git a/gcc/c-decl.c b/gcc/c-decl.c
index c274df4..f7cad3b 100644 (file)
--- a/gcc/c-decl.c
+++ b/gcc/c-decl.c
@@ -803,6 +803,7 @@ pop_scope (void)
        case VAR_DECL:
          /* Warnings for unused variables.  */
          if (!TREE_USED (p)
+             && !TREE_NO_WARNING (p)
              && !DECL_IN_SYSTEM_HEADER (p)
              && DECL_NAME (p)
              && !DECL_ARTIFICIAL (p)
@@ -1876,7 +1877,11 @@ duplicate_decls (tree newdecl, tree olddecl)
   tree newtype = NULL, oldtype = NULL;
 
   if (!diagnose_mismatched_decls (newdecl, olddecl, &newtype, &oldtype))
-    return false;
+    {
+      /* Avoid `unused variable' and other warnings warnings for OLDDECL.  */
+      TREE_NO_WARNING (olddecl) = 1;
+      return false;
+    }
 
   merge_decls (newdecl, olddecl, newtype, oldtype);
   return true;