diff options
| author | Nicolas Pena <npm@chromium.org> | 2017-11-07 14:08:29 +0000 |
|---|---|---|
| committer | Chromium commit bot <commit-bot@chromium.org> | 2017-11-07 14:08:29 +0000 |
| commit | a9fee44bc9f6fb09cdd2585a5649ecf2ad03ecdd (patch) | |
| tree | 6056d3d6051157f476f34286ec69fda6cc7c8d88 /core/fxcodec | |
| parent | 8f48b2dc20d113a3b78aa689a3a93aa5f7e530b8 (diff) | |
| download | pdfium-a9fee44bc9f6fb09cdd2585a5649ecf2ad03ecdd.tar.xz | |
More FX_SAFE_INT32 in CJBig2_TRDProc
Bug: chromium:781780
Change-Id: Ie92d8b570c37e9b3364d1ff4502f444a275ee6c2
Reviewed-on: https://pdfium-review.googlesource.com/17910
Commit-Queue: dsinclair <dsinclair@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>
Diffstat (limited to 'core/fxcodec')
| -rw-r--r-- | core/fxcodec/jbig2/JBig2_TrdProc.cpp | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/core/fxcodec/jbig2/JBig2_TrdProc.cpp b/core/fxcodec/jbig2/JBig2_TrdProc.cpp index f033c9bfea..332e5868ac 100644 --- a/core/fxcodec/jbig2/JBig2_TrdProc.cpp +++ b/core/fxcodec/jbig2/JBig2_TrdProc.cpp @@ -32,13 +32,14 @@ std::unique_ptr<CJBig2_Image> CJBig2_TRDProc::decode_Huffman( FX_SAFE_INT32 STRIPT = INITIAL_STRIPT; STRIPT *= SBSTRIPS; STRIPT = -STRIPT; - int32_t FIRSTS = 0; + FX_SAFE_INT32 FIRSTS = 0; uint32_t NINSTANCES = 0; while (NINSTANCES < SBNUMINSTANCES) { - int32_t DT; - if (pHuffmanDecoder->decodeAValue(SBHUFFDT, &DT) != 0) + int32_t INITIAL_DT; + if (pHuffmanDecoder->decodeAValue(SBHUFFDT, &INITIAL_DT) != 0) return nullptr; + FX_SAFE_INT32 DT = INITIAL_DT; DT *= SBSTRIPS; STRIPT += DT; bool bFirst = true; @@ -49,7 +50,7 @@ std::unique_ptr<CJBig2_Image> CJBig2_TRDProc::decode_Huffman( if (pHuffmanDecoder->decodeAValue(SBHUFFFS, &DFS) != 0) return nullptr; - FIRSTS = FIRSTS + DFS; + FIRSTS += DFS; CURS = FIRSTS; bFirst = false; } else { @@ -265,14 +266,15 @@ std::unique_ptr<CJBig2_Image> CJBig2_TRDProc::decode_Arith( FX_SAFE_INT32 STRIPT = INITIAL_STRIPT; STRIPT *= SBSTRIPS; STRIPT = -STRIPT; - int32_t FIRSTS = 0; + FX_SAFE_INT32 FIRSTS = 0; uint32_t NINSTANCES = 0; while (NINSTANCES < SBNUMINSTANCES) { FX_SAFE_INT32 CURS = 0; - int32_t DT; - if (!pIADT->decode(pArithDecoder, &DT)) + int32_t INITIAL_DT; + if (!pIADT->decode(pArithDecoder, &INITIAL_DT)) return nullptr; + FX_SAFE_INT32 DT = INITIAL_DT; DT *= SBSTRIPS; STRIPT += DT; bool bFirst = true; |