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-rw-r--r--win/tclWinSerial.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/win/tclWinSerial.c b/win/tclWinSerial.c
index aeebb56..9023928 100644
--- a/win/tclWinSerial.c
+++ b/win/tclWinSerial.c
@@ -1038,7 +1038,7 @@ SerialOutputProc(
infoPtr->writeBufLen = toWrite;
infoPtr->writeBuf = ckalloc(toWrite);
}
- memcpy(infoPtr->writeBuf, buf, (size_t) toWrite);
+ memcpy(infoPtr->writeBuf, buf, toWrite);
infoPtr->toWrite = toWrite;
ResetEvent(infoPtr->evWritable);
TclPipeThreadSignal(&infoPtr->writeTI);