From 30e977fe4a01c7c080527f447e3968e524212239 Mon Sep 17 00:00:00 2001
From: Andre Noll <maan@tuebingen.mpg.de>
Date: Thu, 10 Mar 2022 22:14:01 +0100
Subject: [PATCH] mp.c: Fix memory leak on parse errors.

When mp_yyparse() fails we miss to free the abstract syntax tree.

Found by valgrind.
---
 mp.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mp.c b/mp.c
index 416b4f92..aea767d9 100644
--- a/mp.c
+++ b/mp.c
@@ -510,6 +510,7 @@ int mp_init(const char *definition, int nbytes, struct mp_context **result,
 	mp_yy_delete_buffer(buffer_state, scanner);
 	mp_yylex_destroy(scanner);
 	if (ctx->errmsg) { /* parse error */
+		mp_free_ast(ctx->ast);
 		if (errmsg)
 			*errmsg = ctx->errmsg;
 		else
-- 
2.39.5