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cid#1616925 Unintended sign extension

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Change-Id: Ifdcd817fe8b10a8eee6a8fabf767fdc1b311f800
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/172516
Reviewed-by: Caolán McNamara <caolan.mcnamara@collabora.com>
Tested-by: Jenkins
This commit is contained in:
Caolán McNamara 2024-08-26 08:35:09 +01:00
parent 783f943eba
commit a2634d526e
1 changed files with 4 additions and 3 deletions
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7
hwpfilter/source/hgzip.cxx
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@ -19,6 +19,7 @@
#include "precompile.h"
#include <sal/types.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
@ -260,9 +261,9 @@ int gz_flush(gz_stream * file, int flush)
static bool getLongEquals(gz_stream* s, uLong val)
{
uLong x = get_byte(s);
x += get_byte(s) << 8;
x += get_byte(s) << 16;
x += get_byte(s) << 24;
x += static_cast<sal_uInt32>(get_byte(s)) << 8;
x += static_cast<sal_uInt32>(get_byte(s)) << 16;
x += static_cast<sal_uInt32>(get_byte(s)) << 24;
if (s->z_eof)
{
s->z_err = Z_DATA_ERROR;