Re: [PATCH] [gdb/testsuite] Fix gdb.tui/wrap-line.exp

[Andrew Burgess <aburgess@redhat.com>]

Andreas Schwab <schwab@linux-m68k.org> writes:

> On Mai 21 2023, Andrew Burgess via Gdb-patches wrote:
>
>> Tom de Vries via Gdb-patches <gdb-patches@sourceware.org> writes:
>>
>>> PR testsuite/30458 reports the following FAIL:
>>> ...
>>> PASS: gdb.tui/wrap-line.exp: width-auto-detected: cli: wrap
>>> ^CQuit
>>> (gdb) WARNING: timeout in accept_gdb_output
>>> Screen Dump (size 50 columns x 24 rows, cursor at column 6, row 3):
>>>     0 Quit
>>>     1 (gdb) 7890123456789012345678901234567890123456789
>>>     2 W^CQuit
>>>     3 (gdb)
>>>   ...
>>> FAIL: gdb.tui/wrap-line.exp: width-auto-detected: cli: prompt after wrap
>>> ...
>>>
>>> The problem is that the regexp doesn't account for the ^C:
>>> ...
>>>     gdb_assert { [Term::wait_for "^WQuit"] } "prompt after wrap"
>>> ...
>>>
>>> Fix this by updating the regexp, and likewise in another place in the
>>> test-case where we use ^C.
>>
>> Do we know why we sometimes manage to see '^C'?
>
> Isn't that printed by the kernel (N_TTY ldisc)?

Not sure what the last part means.  There's for sure code in readline
which seems to be responsible for printing '^C' in some cases, so I
suspect the kernel doesn't always print this.  Maybe this kernel echoing
is turned off in our situation?

Thanks,
Andrew


>
> -- 
> Andreas Schwab, schwab@linux-m68k.org
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