From: DRC <information@libjpeg-turbo.org>
Date: Tue, 21 Jul 2015 21:43:39 +0000 (-0500)
Subject: Fix rare bug: right shift by a negative # of bits
X-Git-Tag: 1.4.2~14^2
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=2a0b4ac3372c4dbe1c710ef2d9f15b96c4c9166f;p=libjpeg-turbo

Fix rare bug: right shift by a negative # of bits
Under very rare circumstances, decompressing specific corrupt JPEG
images would create a situation whereby GET_BITS(1) was invoked
from within HUFF_DECODE_FAST() when bits_left=0. This produced a right
shift by a negative number of bits, which is undefined in C.
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2a0b4ac3372c4dbe1c710ef2d9f15b96c4c9166f