external/pdfium/ubsan.patch

   1 --- core/fxcrt/string_data_template.h
   2 +++ core/fxcrt/string_data_template.h
   3 @@ -76,7 +76,8 @@ class StringDataTemplate {
   4      ASSERT(nLen >= 0);
   5      ASSERT(offset + nLen <= m_nAllocLength);
   6
   7 -    memcpy(m_String + offset, pStr, nLen * sizeof(CharType));
   8 +    if (nLen != 0)
   9 +      memcpy(m_String + offset, pStr, nLen * sizeof(CharType));
  10      m_String[offset + nLen] = 0;
  11    }
  12
  13 --- core/fxge/cfx_glyphcache.cpp
  14 +++ core/fxge/cfx_glyphcache.cpp
  15 @@ -183,7 +183,8 @@ std::unique_ptr<CFX_GlyphBitmap> CFX_GlyphCache::RenderGlyph(
  16        }
  17      }
  18    } else {
  19 -    memset(pDestBuf, 0, dest_pitch * bmheight);
  20 +    if (dest_pitch != 0 && bmheight != 0)
  21 +      memset(pDestBuf, 0, dest_pitch * bmheight);
  22      int rowbytes = std::min(abs(src_pitch), dest_pitch);
  23      for (int row = 0; row < bmheight; row++)
  24        memcpy(pDestBuf + row * dest_pitch, pSrcBuf + row * src_pitch, rowbytes);