31 lines
903 B
Diff
31 lines
903 B
Diff
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From eae48289c0848c5812644f20dbb1b39fb117a8f6 Mon Sep 17 00:00:00 2001
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From: Sergey Poznyakoff <gray@gnu.org>
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Date: Thu, 20 Dec 2018 17:53:40 +0200
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Subject: [PATCH 32/58] Fix improper memory access
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Bug reported in
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http://lists.gnu.org/archive/html/bug-tar/2018-12/msg00009.html
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* src/transform.c (parse_transform_expr): Check if re is not empty
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before accessing its last byte.
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---
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src/transform.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/src/transform.c b/src/transform.c
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index 6ef0da6..bbf2033 100644
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--- a/src/transform.c
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+++ b/src/transform.c
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@@ -273,7 +273,7 @@ parse_transform_expr (const char *expr)
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USAGE_ERROR ((0, 0, _("Invalid transform expression: %s"), errbuf));
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}
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- if (str[0] == '^' || str[strlen (str) - 1] == '$')
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+ if (str[0] == '^' || (i > 2 && str[i - 3] == '$'))
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tf->transform_type = transform_first;
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free (str);
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--
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2.19.1
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