1 files changed, 19 insertions, 2 deletions
diff --git a/tests/ioCmd.test b/tests/ioCmd.test
index d2c0173..bb133f9 100644
--- a/tests/ioCmd.test
+++ b/tests/ioCmd.test
@@ -818,10 +818,27 @@ test iocmd-21.23 {[close] in [gets] segfaults} -setup {
     set ch [chan create read foo]
 } -body {
     gets $ch
-} -returnCodes error -cleanup {
+} -cleanup {
     catch {close $ch}
     rename foo {}
-} -match glob -result {*invalid argument*}
+} -result {}
+test iocmd-21.24 {[close] in binary [gets] segfaults} -setup {
+    proc foo {method chan args} {
+	switch -- $method initialize {
+	    return {initialize finalize watch read}
+	} finalize {} watch {} read {
+	    catch {close $chan}
+	    return \n
+	}
+    }
+    set ch [chan create read foo]
+} -body {
+    chan configure $ch -translation binary
+    gets $ch
+} -cleanup {
+    catch {close $ch}
+    rename foo {}
+} -result {}
 
 # --- --- --- --------- --------- ---------
 # Helper commands to record the arguments to handler methods.