c-typeck.c (build_unary_op): Replace unreachable diagnostic for taking address…

c-typeck.c (build_unary_op): Replace unreachable diagnostic for taking address of bit-field by assertion.

	* c-typeck.c (build_unary_op): Replace unreachable diagnostic for
	taking address of bit-field by assertion.

From-SVN: r90216

gcc/ChangeLog

+2004-11-07  Joseph S. Myers  <joseph@codesourcery.com>
+
+	* c-typeck.c (build_unary_op): Replace unreachable diagnostic for
+	taking address of bit-field by assertion.
+
 2004-11-06  Ulrich Weigand  <uweigand@de.ibm.com>
 
 	* config/s390/s390.md (attribute "op_type"): Default to "NN".

gcc/c-typeck.c

@@ -2655,13 +2655,8 @@ build_unary_op (enum tree_code code, tree xarg, int flag)
       if (!c_mark_addressable (arg))
 	return error_mark_node;
 
-      if (TREE_CODE (arg) == COMPONENT_REF
-	  && DECL_C_BIT_FIELD (TREE_OPERAND (arg, 1)))
-	{
-	  error ("attempt to take address of bit-field structure member %qD",
-		 TREE_OPERAND (arg, 1));
-	  return error_mark_node;
-	}
+      gcc_assert (TREE_CODE (arg) != COMPONENT_REF
+		  || !DECL_C_BIT_FIELD (TREE_OPERAND (arg, 1)));
 
       argtype = build_pointer_type (argtype);