diff options
| -rw-r--r-- | llvm/include/llvm/Bitcode/BitstreamReader.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/llvm/include/llvm/Bitcode/BitstreamReader.h b/llvm/include/llvm/Bitcode/BitstreamReader.h index 779ef5fa2d8..0ca3ad15618 100644 --- a/llvm/include/llvm/Bitcode/BitstreamReader.h +++ b/llvm/include/llvm/Bitcode/BitstreamReader.h @@ -375,10 +375,12 @@ public: // Check that the block wasn't partially defined, and that the offset isn't // bogus. - if (AtEndOfStream() || NextChar+NumWords*4 > BitStream->getLastChar()) + const unsigned char *const SkipTo = NextChar + NumWords*4; + if (AtEndOfStream() || SkipTo > BitStream->getLastChar() || + SkipTo < BitStream->getFirstChar()) return true; - NextChar += NumWords*4; + NextChar = SkipTo; return false; } |
