From: Jaroslav Kysela <perex@perex.cz>
Date: Fri, 13 May 2022 14:19:48 +0000 (+0200)
Subject: conf: fix memory leak in snd_config_substitute() for strings
X-Git-Tag: v1.2.7~38
X-Git-Url: https://git.alsa-project.org/?a=commitdiff_plain;h=3e5a8943781d17361ffe79e03c23e76946fcd67f;p=alsa-lib.git

conf: fix memory leak in snd_config_substitute() for strings

When destination type is SND_CONFIG_TYPE_STRING, the old string
must be freed.

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
---

diff --git a/src/conf.c b/src/conf.c
index 70f0e773..e7f9e78c 100644
--- a/src/conf.c
+++ b/src/conf.c
@@ -1741,6 +1741,8 @@ int snd_config_substitute(snd_config_t *dst, snd_config_t *src)
 		src->u.compound.fields.prev->next = &dst->u.compound.fields;
 	}
 	free(dst->id);
+	if (dst->type == SND_CONFIG_TYPE_STRING)
+		free(dst->u.string);
 	dst->id = src->id;
 	dst->type = src->type;
 	dst->u = src->u;