diff options
| author | Caolán McNamara <caolanm@redhat.com> | 2017-10-25 09:53:56 +0100 |
|---|---|---|
| committer | Caolán McNamara <caolanm@redhat.com> | 2017-10-25 16:00:25 +0200 |
| commit | 35bb14d8573d29d836a6ff8d64b06fa820e50d11 (patch) | |
| tree | 60dac86e72239e3c914456024b2d1fd65c8148b4 /external/libjpeg-turbo/ubsan.patch | |
| parent | ffb19c5be464770e6ac2d9b13422353c8a03294b (diff) | |
ofz#3782 libjpeg ubsan woes
https://github.com/libjpeg-turbo/libjpeg-turbo/issues/171
Change-Id: Ic6d7e27f88a542d78f3257418099c8fd875b04c9
Reviewed-on: https://gerrit.libreoffice.org/43812
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>
Diffstat (limited to 'external/libjpeg-turbo/ubsan.patch')
| -rw-r--r-- | external/libjpeg-turbo/ubsan.patch | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/external/libjpeg-turbo/ubsan.patch b/external/libjpeg-turbo/ubsan.patch index 81ff148c57d6..33d3c15a8b3c 100644 --- a/external/libjpeg-turbo/ubsan.patch +++ b/external/libjpeg-turbo/ubsan.patch @@ -17,3 +17,23 @@ put_bits -= 8; } +--- jdarith.c ++++ jdarith.c +@@ -306,7 +306,7 @@ + while (m >>= 1) + if (arith_decode(cinfo, st)) v |= m; + v += 1; if (sign) v = -v; +- entropy->last_dc_val[ci] += v; ++ entropy->last_dc_val[ci] = (entropy->last_dc_val[ci] + v) & 0xffff; + } + + /* Scale and output the DC coefficient (assumes jpeg_natural_order[0]=0) */ +@@ -564,7 +564,7 @@ + while (m >>= 1) + if (arith_decode(cinfo, st)) v |= m; + v += 1; if (sign) v = -v; +- entropy->last_dc_val[ci] += v; ++ entropy->last_dc_val[ci] = (entropy->last_dc_val[ci] + v) & 0xffff; + } + + if (block) |