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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 cc35f07..fc0255a 100644
--- a/win/tclWinSerial.c
+++ b/win/tclWinSerial.c
@@ -2152,7 +2152,7 @@ SerialGetOptionProc(
Tcl_DStringStartSublist(dsPtr);
}
if (len==0 || (len>1 && strncmp(optionName, "-xchar", len) == 0)) {
- char buf[TCL_UTF_MAX];
+ char buf[4];
valid = 1;
if (!GetCommState(infoPtr->handle, &dcb)) {