From: Masahiro Yamada <yamada.masahiro@socionext.com>
Date: Tue, 20 Feb 2018 11:40:29 +0000 (+0900)
Subject: kconfig: Don't leak choice names during parsing
X-Git-Url: https://jxself.org/git/?a=commitdiff_plain;h=120e44ad1fcc23e18af4084d9f02d135854728fd;p=carl9170fw.git

kconfig: Don't leak choice names during parsing

The named choice is not used in the kernel tree, but if it were used,
it would not be freed.

The intention of the named choice can be seen in the log of
commit 5a1aa8a1aff6 ("kconfig: add named choice group").

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Ulf Magnusson <ulfalizer@gmail.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
---

diff --git a/config/zconf.y b/config/zconf.y
index 250d58e..c292f27 100644
--- a/config/zconf.y
+++ b/config/zconf.y
@@ -276,6 +276,7 @@ choice: T_CHOICE word_opt T_EOL
 	sym->flags |= SYMBOL_AUTO;
 	menu_add_entry(sym);
 	menu_add_expr(P_CHOICE, NULL, NULL);
+	free($2);
 	printd(DEBUG_PARSE, "%s:%d:choice\n", zconf_curname(), zconf_lineno());
 };