diff options
Diffstat (limited to 'core/fpdfapi/fpdf_parser/cpdf_data_avail.cpp')
| -rw-r--r-- | core/fpdfapi/fpdf_parser/cpdf_data_avail.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/core/fpdfapi/fpdf_parser/cpdf_data_avail.cpp b/core/fpdfapi/fpdf_parser/cpdf_data_avail.cpp index a4b85a34fa..15f98b26b9 100644 --- a/core/fpdfapi/fpdf_parser/cpdf_data_avail.cpp +++ b/core/fpdfapi/fpdf_parser/cpdf_data_avail.cpp @@ -716,10 +716,10 @@ FX_BOOL CPDF_DataAvail::CheckFirstPage(IPDF_DataAvail::DownloadHints* pHints) { FX_BOOL CPDF_DataAvail::IsDataAvail(FX_FILESIZE offset, uint32_t size, IPDF_DataAvail::DownloadHints* pHints) { - if (offset > m_dwFileLen) + if (offset < 0 || offset > m_dwFileLen) return TRUE; - FX_SAFE_DWORD safeSize = pdfium::base::checked_cast<uint32_t>(offset); + FX_SAFE_FILESIZE safeSize = offset; safeSize += size; safeSize += 512; if (!safeSize.IsValid() || safeSize.ValueOrDie() > m_dwFileLen) |