poppler/Stream.cc | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
New commits: commit 31c3832b996acbf04ea833e304d7d21ac4533a57 Author: Albert Astals Cid <[email protected]> Date: Tue May 22 20:25:18 2018 +0200 LZWStream::getCode: Don't left shift negative values it's undefined behaviour diff --git a/poppler/Stream.cc b/poppler/Stream.cc index 4f075c12..b6bfd838 100644 --- a/poppler/Stream.cc +++ b/poppler/Stream.cc @@ -1445,7 +1445,9 @@ int LZWStream::getCode() { while (inputBits < nextBits) { if ((c = str->getChar()) == EOF) return EOF; - inputBuf = (inputBuf << 8) | (c & 0xff); + if (likely(inputBuf >= 0)) { + inputBuf = (inputBuf << 8) | (c & 0xff); + } inputBits += 8; } code = (inputBuf >> (inputBits - nextBits)) & ((1 << nextBits) - 1); _______________________________________________ poppler mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/poppler
