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zlib.15099
0001-Do-not-try-to-store-negative-values-in-uns...
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File 0001-Do-not-try-to-store-negative-values-in-unsigned-int.patch of Package zlib.15099
From bb5eec59e3ec66f6dccb79b1900aa806a1cca12e Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Tom=C3=A1=C5=A1=20Chv=C3=A1tal?= <tchvatal@suse.com> Date: Fri, 8 Dec 2017 14:59:08 +0100 Subject: [PATCH] Do not try to store negative values in unsigned int --- deflate.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/deflate.c b/deflate.c index 1ec7614..1bad1eb 100644 --- a/deflate.c +++ b/deflate.c @@ -1536,7 +1536,10 @@ local void fill_window(s) /* Initialize the hash value now that we have some input: */ if (s->lookahead + s->insert >= MIN_MATCH) { - uInt str = s->strstart - s->insert; + uInt str = 0; + /* storing negative values to uInt is not good idea */ + if (s->strstart - s->insert > 0) + str = s->strstart - s->insert; s->ins_h = s->window[str]; UPDATE_HASH(s, s->ins_h, s->window[str + 1]); #if MIN_MATCH != 3 -- 2.15.1
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