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Date:   Fri, 10 Aug 2018 16:36:36 +0300
From:   efremov@...ux.com
To:     Julia Lawall <Julia.Lawall@...6.fr>
Cc:     Masahiro Yamada <yamada.masahiro@...ionext.com>,
        "Luis R . Rodriguez" <mcgrof@...nel.org>,
        Nicolas Palix <nicolas.palix@...g.fr>,
        Gilles Muller <Gilles.Muller@...6.fr>,
        Michal Marek <michal.lkml@...kovi.net>,
        linux-kernel@...r.kernel.org, ldv-project@...uxtesting.org,
        Denis Efremov <efremov@...ux.com>
Subject: [PATCH] coccicheck: return proper error code on check fail 

If coccicheck finds errors, it should return an error code
distinct from zero. Current code instead of exiting with an
error code of coccinelle returns error code of
'echo "coccicheck failed"' which is almost always equals to zero,
thus failing original intention of alerting about errors.
This patch fixes the problem.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Denis Efremov <efremov@...ux.com>
---
 scripts/coccicheck | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/scripts/coccicheck b/scripts/coccicheck
index 9fedca611b7f..e04d328210ac 100755
--- a/scripts/coccicheck
+++ b/scripts/coccicheck
@@ -128,9 +128,10 @@ run_cmd_parmap() {
 	fi
 	echo $@ >>$DEBUG_FILE
 	$@ 2>>$DEBUG_FILE
-	if [[ $? -ne 0 ]]; then
+	err=$?
+	if [[ $err -ne 0 ]]; then
 		echo "coccicheck failed"
-		exit $?
+		exit $err
 	fi
 }
 
-- 
2.17.1

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