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From: Kamil Dudka <kdudka@redhat.com>
To: zsh-workers@zsh.org
Subject: [PATCH] mkenvstr: avoid crash in case NULL is given as value
Date: Tue, 19 May 2015 20:24:14 +0200	[thread overview]
Message-ID: <1432059854-2109-1-git-send-email-kdudka@redhat.com> (raw)

The crash happens while running a syntax check in ksh emulation mode:

    ln -s /bin/zsh ksh
    echo > script.sh
    ./ksh -n script.sh

Originally reported at <https://bugzilla.redhat.com/1222867>.
---
 Src/params.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Src/params.c b/Src/params.c
index 045ac1e..1df97c6 100644
--- a/Src/params.c
+++ b/Src/params.c
@@ -4582,6 +4582,8 @@ mkenvstr(char *name, char *value, int flags)
 {
     char *str, *s;
     int len_name, len_value;
+    if (!value)
+	return NULL;
 
     len_name = strlen(name);
     for (len_value = 0, s = value;
-- 
2.4.1


             reply	other threads:[~2015-05-19 18:24 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-05-19 18:24 Kamil Dudka [this message]
2015-05-19 23:12 ` Bart Schaefer
2015-05-20 14:43   ` Kamil Dudka
2015-05-20 17:23     ` Bart Schaefer
2015-05-20 17:35       ` Kamil Dudka
2015-05-20 18:17         ` Kamil Dudka

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