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Fix crash when loading an empty mpeg file (#830)

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When loading an empty file (empty.txt -> empty.mp3 ), TagLib will crash.
buffer.size() is 0, then buffer.size() - 1 is undefined (unsigned int)
This commit is contained in:
Xijian Yan 2017-11-06 23:48:17 +08:00 committed by Stephen F. Booth
parent cb9f07d9dc
commit 249f892455
1 changed files with 3 additions and 0 deletions
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taglib/mpeg/mpegfile.cpp
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@ -108,6 +108,9 @@ bool MPEG::File::isSupported(IOStream *stream)
long headerOffset;
const ByteVector buffer = Utils::readHeader(stream, bufferSize(), true, &headerOffset);
if(buffer.isEmpty())
return false;
const long originalPosition = stream->tell();
AdapterFile file(stream);