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List:       linux-kernel
Subject:    [PATCH] =?UTF-8?q?kconfig:=20Fix=20warning=20"=E2=80=98jump?= =?UTF-8?q?=E2=80=99=20may=20be=20used=
From:       Peter Kümmel <syntheticpp () gmx ! net>
Date:       2014-11-06 12:03:00
Message-ID: 1415275383-15301-1-git-send-email-syntheticpp () gmx ! net
[Download RAW message or body]

Warning:
In file included from scripts/kconfig/zconf.tab.c:2537:0:
scripts/kconfig/menu.c: In function ‘get_symbol_str':
scripts/kconfig/menu.c:590:18: warning: ‘jump' may be used uninitialized in this \
function [-Wmaybe-uninitialized]  jump->offset = strlen(r->s);

Simplifies the test logic because (head && local) means (jump != 0)
and makes GCC happy when checking if the jump pointer was initialized.

Signed-off-by: Peter Kümmel <syntheticpp@gmx.net>
---
 scripts/kconfig/menu.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/scripts/kconfig/menu.c b/scripts/kconfig/menu.c
index a26cc5d..72c9dba 100644
--- a/scripts/kconfig/menu.c
+++ b/scripts/kconfig/menu.c
@@ -548,7 +548,7 @@ static void get_prompt_str(struct gstr *r, struct property *prop,
 {
 	int i, j;
 	struct menu *submenu[8], *menu, *location = NULL;
-	struct jump_key *jump;
+	struct jump_key *jump = NULL;
 
 	str_printf(r, _("Prompt: %s\n"), _(prop->text));
 	menu = prop->menu->parent;
@@ -586,7 +586,7 @@ static void get_prompt_str(struct gstr *r, struct property *prop,
 		str_printf(r, _("  Location:\n"));
 		for (j = 4; --i >= 0; j += 2) {
 			menu = submenu[i];
-			if (head && location && menu == location)
+			if (jump && menu == location)
 				jump->offset = strlen(r->s);
 			str_printf(r, "%*c-> %s", j, ' ',
 				   _(menu_get_prompt(menu)));
-- 
1.9.1

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