[PATCH] scripts/kconfig/menu.c warning for uninitialized "jump"

From: Peter Teoh
Date: Thu Nov 20 2014 - 23:22:38 EST

This warning was found in v3.18-rc3-68-g20f3963 of Linus git-tree.

SHIPPED scripts/kconfig/zconf.hash.c
HOSTCC scripts/kconfig/zconf.tab.o
In file included from scripts/kconfig/zconf.tab.c:2537:0:
scripts/kconfig/menu.c: In function âget_symbol_strâ:
scripts/kconfig/menu.c:590:18: warning: âjumpâ may be used
uninitialized in this function [-Wmaybe-uninitialized]
jump->offset = strlen(r->s);
scripts/kconfig/menu.c:551:19: note: âjumpâ was declared here
struct jump_key *jump;
HOSTCC scripts/kconfig/lxdialog/checklist.o
HOSTCC scripts/kconfig/lxdialog/util.o
HOSTCC scripts/kconfig/lxdialog/inputbox.o

The patch is provided below, to put in the extra checks for jump, and
it also added extra brackets to make the logical expression less

Signed-off-by: Peter Teoh <htmldeveloper@xxxxxxxxx>

diff --git a/scripts/kconfig/menu.c b/scripts/kconfig/menu.c
index a26cc5d..4d7eb61 100644
--- a/scripts/kconfig/menu.c
+++ b/scripts/kconfig/menu.c
@@ -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 (head && location && (menu == location) && (jump))
jump->offset = strlen(r->s);
str_printf(r, "%*c-> %s", j, ' ',
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