File glibc-2.3-regcomp.diff of Package glibc.import4943

Index: posix/regcomp.c
===================================================================
--- posix/regcomp.c.orig
+++ posix/regcomp.c
@@ -2254,6 +2254,8 @@ parse_expression (re_string_t *regexp, r
       else if (syntax & RE_CONTEXT_INDEP_OPS)
 	{
 	  fetch_token (token, regexp, syntax);
+	  if (token->type == OP_CLOSE_SUBEXP || token->type == OP_ALT)
+	    return NULL;
 	  return parse_expression (regexp, preg, token, syntax, nest, err);
 	}
       /* else fall through  */