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-rw-r--r--win/tclWinSerial.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/win/tclWinSerial.c b/win/tclWinSerial.c
index 75d5ffc..b9c9a9f 100644
--- a/win/tclWinSerial.c
+++ b/win/tclWinSerial.c
@@ -932,7 +932,7 @@ SerialInputProc(
bufSize = cStat.cbInQue;
}
} else {
- errno = *errorCode = EAGAIN;
+ errno = *errorCode = EWOULDBLOCK;
return -1;
}
} else {
@@ -1034,7 +1034,7 @@ SerialOutputProc(
* the channel is in non-blocking mode.
*/
- errno = EAGAIN;
+ errno = EWOULDBLOCK;
goto error1;
}