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0031008: Application Framework - memcpy-param-overlap reported by Clang address sanitizer in LDOM_XmlReader::ReadRecord()

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Use memmove instead of memcpy because of copy of the possible overlapped source and destination parts of the buffer.
This commit is contained in:
mpv 2019-09-30 14:12:35 +03:00 committed by abv
parent 2724a0b3cc
commit 3358ed643b
1 changed files with 7 additions and 4 deletions
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5
src/LDOM/LDOM_XmlReader.cxx
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@ -120,7 +120,10 @@ LDOM_XmlReader::RecordType LDOM_XmlReader::ReadRecord (Standard_IStream& theIStr
} }
// Copy the rest of file data to the beginning of buffer // Copy the rest of file data to the beginning of buffer
if (aBytesRest > 0) if (aBytesRest > 0)
memcpy (&myBuffer[0], myPtr, aBytesRest); {
// do not use memcpy here because aBytesRest may be greater than myPtr-myBuffer, so, overlap
memmove (&myBuffer[0], myPtr, aBytesRest);
}
// Read the full buffer and reset start and end buffer pointers // Read the full buffer and reset start and end buffer pointers
myPtr = &myBuffer[0]; myPtr = &myBuffer[0];