cppmacro.c (_cpp_create_definition): Don't attempt redefinition warnings on assertions.

	* cppmacro.c (_cpp_create_definition): Don't attempt redefinition
	warnings on assertions.

From-SVN: r55778

gcc/ChangeLog

 2002-07-26  Neil Booth  <neil@daikokuya.co.uk>
 
+	* cppmacro.c (_cpp_create_definition): Don't attempt redefinition
+	warnings on assertions.
+
+2002-07-26  Neil Booth  <neil@daikokuya.co.uk>
+
 	* c-common.h (RID_AND, RID_AND_EQ, RID_NOT, RID_NOT_EQ,
 	RID_OR, RID_OR_EQ, RID_XOR, RID_XOR_EQ, RID_BITAND, RID_BITOR,
 	RID_COMPL): Remove.

gcc/cppmacro.c

@@ -1547,7 +1547,7 @@ _cpp_create_definition (pfile, node)
   if (!ok)
     return ok;
 
-  if (node->type != NT_VOID)
+  if (node->type == NT_MACRO)
     {
       if (CPP_OPTION (pfile, warn_unused_macros))
 	_cpp_warn_if_unused_macro (pfile, node, NULL);
@@ -1562,9 +1562,11 @@ _cpp_create_definition (pfile, node)
 				 node->value.macro->line, 0,
 			 "this is the location of the previous definition");
 	}
-      _cpp_free_definition (node);
     }
 
+  if (node->type != NT_VOID)
+    _cpp_free_definition (node);
+
   /* Enter definition in hash table.  */
   node->type = NT_MACRO;
   node->value.macro = macro;