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-rw-r--r--posix/regcomp.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/posix/regcomp.c b/posix/regcomp.c
index a5020be192..076eca3e7c 100644
--- a/posix/regcomp.c
+++ b/posix/regcomp.c
@@ -2154,7 +2154,11 @@ parse_reg_exp (re_string_t *regexp, regex_t *preg, re_token_t *token,
 	{
 	  branch = parse_branch (regexp, preg, token, syntax, nest, err);
 	  if (BE (*err != REG_NOERROR && branch == NULL, 0))
-	    return NULL;
+	    {
+	      if (tree != NULL)
+		postorder (tree, free_tree, NULL);
+	      return NULL;
+	    }
 	}
       else
 	branch = NULL;