read [teststringobj get 2]
} -cleanup {
    interp delete child
    testobj freeallvars
    removeFile io-74.1
} -returnCodes error -match glob -result {can not find channel named "*"}

test io-75.1 {multibyte encoding error read results in raw bytes (-nocomplainencoding 1)} -setup {
    set fn [makeFile {} io-75.1]
    set f [open $fn w+]
    fconfigure $f -encoding binary
    # In UTF-8, a byte 0xCx starts a multibyte sequence and must be followed
    # by a byte > 0x7F. This is violated to get an invalid sequence.
    puts -nonewline $f "A\xC0\x40"
    flush $f
    seek $f 0
    fconfigure $f -encoding utf-8 -nocomplainencoding 1 -buffering none
} -body {
    set d [read $f]
    binary scan $d H* hd
    set hd
} -cleanup {
    close $f
    removeFile io-75.1
} -result "41c040"

test io-75.2 {unrepresentable character write passes and is replaced by ? (-nocomplainencoding 1)} -setup {
    set fn [makeFile {} io-75.2]
    set f [open $fn w+]
    fconfigure $f -encoding iso8859-1 -nocomplainencoding 1
} -body {
    puts -nonewline $f "A\u2022"
    flush $f
    seek $f 0
    read $f
} -cleanup {
    close $f
    removeFile io-75.2
} -result "A?"

# Incomplete sequence test.
# This error may IMHO only be detected with the close.
# But the read already returns the incomplete sequence.
test io-75.3 {incomplete multibyte encoding read is ignored (-nocomplainencoding 1)} -setup {
    set fn [makeFile {} io-75.3]
    set f [open $fn w+]
    fconfigure $f -encoding binary
    puts -nonewline $f "A\xC0"
    flush $f
    seek $f 0
    fconfigure $f -encoding utf-8 -buffering none -nocomplainencoding 1
} -body {
    set d [read $f]
    close $f
    binary scan $d H* hd
    set hd
} -cleanup {
    removeFile io-75.3
} -result "41c0"

# As utf-8 has a special treatment in multi-byte decoding, also test another
# one.
test io-75.4 {shiftjis encoding error read results in raw bytes (-nocomplainencoding 1)} -setup {
    set fn [makeFile {} io-75.4]
    set f [open $fn w+]
    fconfigure $f -encoding binary
    # In shiftjis, \x81 starts a two-byte sequence.
    # But 2nd byte \xFF is not allowed
    puts -nonewline $f "A\x81\xFFA"
    flush $f
    seek $f 0
    fconfigure $f -encoding shiftjis -buffering none -eofchar "" -translation lf -nocomplainencoding 1
} -body {
    set d [read $f]
    binary scan $d H* hd
    set hd
} -cleanup {
    close $f
    removeFile io-75.4
} -result "4181ff41"

test io-75.5 {incomplete shiftjis encoding read is ignored (-nocomplainencoding 1)} -setup {
    set fn [makeFile {} io-75.5]
    set f [open $fn w+]
    fconfigure $f -encoding binary
    # \x81 announces a two byte sequence.
    puts -nonewline $f "A\x81"
    flush $f
    seek $f 0
    fconfigure $f -encoding utf-8 -buffering none -eofchar "" -translation lf -nocomplainencoding 1
} -body {
    set d [read $f]
    close $f
    binary scan $d H* hd
    set hd
} -cleanup {
    removeFile io-75.5
} -result "4181"

test io-75.6 {multibyte encoding error read results in raw bytes} -setup {
    set fn [makeFile {} io-75.6]
    set f [open $fn w+]
    fconfigure $f -encoding binary
    # In UTF-8, a byte 0xCx starts a multibyte sequence and must be followed
    # by a byte > 0x7F. This is violated to get an invalid sequence.
    puts -nonewline $f "A\xC0\x40"