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shcore: Check optional pointer in filestream_CopyTo() before writing to it.

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Check that the 'written' parameter in this function is non-null before
incrementing it by 'written_chunk'.
This commit is contained in:
Danyil Blyschak 2024-05-21 11:15:45 -05:00 committed by Alexandre Julliard
parent 3ee6f3b918
commit d28d7bd52c
1 changed files with 1 additions and 1 deletions
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2
dlls/shcore/main.c
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@ -1017,7 +1017,7 @@ static HRESULT WINAPI filestream_CopyTo(IStream *iface, IStream *dest, ULARGE_IN
/* Write */
hr = IStream_Write(dest, buff, read_chunk, &written_chunk);
if (written_chunk)
if (written)
written->QuadPart += written_chunk;
if (FAILED(hr) || written_chunk != left)
break;