[Bug 2044] New: error message is printed for SSHv1 when ssh is forced to allocate a pseudo-tty even when it does not have a one

[bugzilla-daemon at mindrot.org]

https://bugzilla.mindrot.org/show_bug.cgi?id=2044

          Priority: P5
            Bug ID: 2044
          Assignee: unassigned-bugs at mindrot.org
           Summary: error message is printed for SSHv1 when ssh is forced
                    to allocate a pseudo-tty even when it does not have a
                    one
          Severity: minor
    Classification: Unclassified
                OS: All
          Reporter: ivo.raisr at oracle.com
          Hardware: All
            Status: NEW
           Version: 6.1p1
         Component: ssh
           Product: Portable OpenSSH

Created attachment 2190
  --> https://bugzilla.mindrot.org/attachment.cgi?id=2190&action=edit
patch with a fix

When running
ssh -1 -tt user at host tty </dev/null

then ssh has to use SSHv1 and is forced to allocate a tty
even when stdin is not a terminal.

In this case, ssh correctly logs into the remote host,
allocates a tty and successfully runs the command.
But it displays error message:

tcgetattr: ......

Note that when SSHv2 is used, no error message is printed.
This is because the following two bugs were fixed previously:
https://bugzilla.mindrot.org/show_bug.cgi?id=1686
https://bugzilla.mindrot.org/show_bug.cgi?id=1199

This bug report is for SSHv1 only.
See the attached patch for a suggested fix.

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