1 files changed, 1 insertions, 0 deletions
diff --git a/generic/tclIO.c b/generic/tclIO.c
index f2d1f44..4628e90 100644
--- a/generic/tclIO.c
+++ b/generic/tclIO.c
@@ -3607,6 +3607,7 @@ static int WillRead(Channel *chanPtr)
 {
     if (chanPtr->typePtr == NULL) {
 	/* Prevent read attempts on a closed channel */
+        DiscardInputQueued(chanPtr->state, 0);
 	Tcl_SetErrno(EINVAL);
 	return -1;
     }