[patch, testsuite] fix problems in gdb.base/paginate-bg-execution.exp

[Sandra Loosemore]

On 09/29/2015 08:41 AM, Pedro Alves wrote:
> On 09/18/2015 08:52 PM, Sandra Loosemore wrote:
>> This patch addresses a couple of problems in
>> gdb.base/paginate-bg-execution.exp:
>>
>> (1) A different "Quit" message can appear in some cases, e.g. if GDB
>> thinks the terminal doesn't support job control -- see the definition of
>> quit in utils.c.  The specific situation where I tripped over this was
>> running GDB in a CMD.EXE shell on a remote Windows host via ssh -T.
>
> Seems to me that suggesting to "expect signal SIGINT when the program
> is resumed" is bogus in this case.  That can happen when you ctrl-c
> the terminal, because a SIGINT ends up queued in both the inferior
> and gdb, but I'm not seeing why that would happen in response to
> the user typing "q" on a pagination prompt.  I think prompt_for_continue
> should call throw_quit("Quit") directly instead of quit().

Hmmmm.  If an actual code change is required here (instead of just a 
testsuite fix), I'll split this off and try to deal with it separately.

>> (2) The test was sending a ^C interrupt without testing whether the
>> target had the nointerrupts property set.
>
> Odd that almost no other ctrl-c test checks this:
>
> $ git grep "\\\003" testsuite/
>
> testsuite/gdb.base/completion.exp:    send_gdb "\003"
> testsuite/gdb.base/completion.exp:      send_gdb "\003"
> testsuite/gdb.base/double-prompt-target-event-error.exp:        send_gdb "\003p 1\n"
> testsuite/gdb.base/interrupt.exp:       send_gdb "\003"
> testsuite/gdb.base/interrupt.exp:           send_gdb "\003"
> testsuite/gdb.base/paginate-after-ctrl-c-running.exp:   send_gdb "\003"
> testsuite/gdb.base/paginate-bg-execution.exp:       send_gdb "\003"
> testsuite/gdb.base/paginate-execution-startup.exp:          send_gdb "\003"
> testsuite/gdb.base/printcmds.exp:       gdb_test "p ctable1\[3\]"   " = 3 '\\\\003'"
> testsuite/gdb.base/printcmds.exp:           " = \\(unsigned char \\*\\) <ctable1\\+$decimal> \"\\\\001\\\\002\\\\003\\\\004\\\\005\\\\006\\\\a\\\\b\"..."
> testsuite/gdb.base/random-signal.exp:after 500 {send_gdb "\003"}
> testsuite/gdb.base/range-stepping.exp:    send_gdb "\003"
> testsuite/gdb.cp/annota2.exp:send_gdb "\003"
> testsuite/gdb.cp/annota3.exp:send_gdb "\003"
> testsuite/gdb.gdb/selftest.exp:    send_gdb "\003"
> testsuite/gdb.threads/continue-pending-status.exp:      send_gdb "\003"
> testsuite/gdb.threads/leader-exit.exp:send_gdb "\003"
> testsuite/gdb.threads/manythreads.exp:    send_gdb "\003"
> testsuite/gdb.threads/pthreads.exp:    send_gdb "\003"
> testsuite/gdb.threads/schedlock.exp:  after 1000 {send_gdb "\003"}
> testsuite/gdb.threads/sigthread.exp:after 500 {send_gdb "\003"}
>
> $ git grep nointerrupts
>
> testsuite/gdb.base/interrupt.exp:if [target_info exists gdb,nointerrupts] {
> testsuite/gdb.base/interrupt.exp:    verbose "Skipping interrupt.exp because of nointerrupts."
>
> What's going on?

I had an older patch that dealt with most of these that I hadn't pushed 
upstream yet.  :")  I also found that a few of the things on your list 
were already being skipped for other reasons on the target I was testing 
on, and I'd missed a couple that were failing via ERROR instead of FAIL. 
  Here's a revised patch that should take care of everything -- OK to 
commit this one?

-Sandra

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