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| -rw-r--r-- | tests/iogt.test | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/tests/iogt.test b/tests/iogt.test index 50034de..33a6425 100644 --- a/tests/iogt.test +++ b/tests/iogt.test @@ -839,6 +839,15 @@ test iogt-6.0 {Push back} -constraints testchannel -body { close $f } -result {xxx} test iogt-6.1 {Push back and up} -constraints {testchannel knownBug} -body { + + # This test demonstrates the bug/misfeature in the stacked + # channel implementation that data can be discarded if it is + # read into the buffers of one channel in the stack, and then + # that channel is popped before anything above it reads. + # + # This bug can be worked around by always setting -buffersize + # to 1, but who wants to do that? + set f [open $path(dummy) r] # contents of dummy = "abcdefghi..." read $f 3; # skip behind "abc" |