c-decl.c (grokdeclarator): Only check TREE_OVERFLOW on INTEGER_CST nodes.

	* c-decl.c (grokdeclarator): Only check TREE_OVERFLOW on
	INTEGER_CST nodes.
	* c-typeck.c (build_c_cast): Only preserve TREE_OVERFLOW on
	CONSTANT_CLASS_P nodes.

From-SVN: r101187

gcc/ChangeLog

+2005-06-19  Roger Sayle  <roger@eyesopen.com>
+
+	* c-decl.c (grokdeclarator): Only check TREE_OVERFLOW on
+	INTEGER_CST nodes.
+	* c-typeck.c (build_c_cast): Only preserve TREE_OVERFLOW on
+	CONSTANT_CLASS_P nodes.
+
 2005-06-19  Richard Henderson  <rth@redhat.com>
 
 	* config/ia64/vect.md (vec_extractv2sf_1): Fix cut-and-paste error;

gcc/c-decl.c

@@ -4192,7 +4192,8 @@ grokdeclarator (const struct c_declarator *declarator,
 		       index_type, before the subtraction.  Handling
 		       this case seems like an unnecessary
 		       complication.  */
-		    if (TREE_OVERFLOW (itype))
+		    if (TREE_CODE (itype) == INTEGER_CST
+			&& TREE_OVERFLOW (itype))
 		      {
 			error ("size of array %qs is too large", name);
 			type = error_mark_node;
@@ -4357,6 +4358,7 @@ grokdeclarator (const struct c_declarator *declarator,
 
   if (TREE_CODE (type) == ARRAY_TYPE
       && COMPLETE_TYPE_P (type)
+      && TREE_CODE (TYPE_SIZE (type)) == INTEGER_CST
       && TREE_OVERFLOW (TYPE_SIZE (type)))
     {
       error ("size of array %qs is too large", name);

gcc/c-typeck.c

@@ -3331,17 +3331,16 @@ build_c_cast (tree type, tree expr)
       /* Ignore any integer overflow caused by the cast.  */
       if (TREE_CODE (value) == INTEGER_CST)
 	{
-	  if (EXPR_P (ovalue))
 	  /* If OVALUE had overflow set, then so will VALUE, so it
 	     is safe to overwrite.  */
+	  if (CONSTANT_CLASS_P (ovalue))
+	    {
 	      TREE_OVERFLOW (value) = TREE_OVERFLOW (ovalue);
+	      /* Similarly, constant_overflow cannot have become cleared.  */
+	      TREE_CONSTANT_OVERFLOW (value) = TREE_CONSTANT_OVERFLOW (ovalue);
+	    }
 	  else
 	    TREE_OVERFLOW (value) = 0;
-	  
-	  if (CONSTANT_CLASS_P (ovalue))
-	    /* Similarly, constant_overflow cannot have become
-	       cleared.  */
-	    TREE_CONSTANT_OVERFLOW (value) = TREE_CONSTANT_OVERFLOW (ovalue);
 	}
     }