From 0cfda8e58c9ceb635ddd1b60ca91f104792bd6af Mon Sep 17 00:00:00 2001
From: Andre Noll <maan@tuebingen.mpg.de>
Date: Mon, 17 Mar 2025 21:43:15 +0100
Subject: [PATCH] Fix memory leak in mood parser.

If a mood definition contains an invalid regular expression, we leak
one ast node structure per yyparse() call.
---
 yy/mp.lex | 1 +
 1 file changed, 1 insertion(+)

diff --git a/yy/mp.lex b/yy/mp.lex
index 4a53db27..27e968bf 100644
--- a/yy/mp.lex
+++ b/yy/mp.lex
@@ -118,6 +118,7 @@ false {return FALSE;}
 	yylval->node = mp_new_ast_leaf_node(REGEX_PATTERN);
 	ret = mp_parse_regex_pattern(yytext, &yylval->node->sv.re_pattern);
 	if (ret < 0) {
+		free(yylval->node);
 		mp_parse_error(yylloc->first_line, ctx, "%s: %s", yytext,
 			para_strerror(-ret));
 		return -E_MOOD_PARSE;
-- 
2.39.5