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From: Kevin Pouget <kevin.pouget@gmail.com>
Date: Mon, 24 Oct 2011 09:15:00 -0000
Message-ID: <CAPftXUJu_9-X1G7t7YEVFSAc5f5ztL-0uKmE+MYQfCB=U_3mEQ@mail.gmail.com>
Subject: Re: Dejagnu testing issue
To: Jan Kratochvil <jan.kratochvil@redhat.com>
Cc: Tom Tromey <tromey@redhat.com>, gdb-patches@sourceware.org
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On Fri, Oct 21, 2011 at 10:32 AM, Jan Kratochvil
<jan.kratochvil@redhat.com> wrote:
> On Fri, 21 Oct 2011 10:14:42 +0200, Kevin Pouget wrote:
>> for the record, here is the way to get the pid based on "expect_out":
>>
>> gdb_test_multiple "info inferior" "list inferiors" {
>> =A0 =A0 -re ".* \* 1.*process (\[0-9\]*).*$gdb_prompt $" {
>> =A0 =A0 =A0 set pid $expect_out(1,string)
>> =A0 =A0 =A0 pass "list inferiors"
>> =A0 =A0 }
>> }
>
> While it works to make it working as was intended it could be for example:
>
> gdb_test_multiple "info inferior" "list inferiors" {
> =A0 =A0-re "\r\n\\* 1 *process (\[0-9\]*) .*\r\n$gdb_prompt $" {
> =A0 =A0 =A0 =A0set pid $expect_out(1,string)
> =A0 =A0 =A0 =A0pass "list inferiors"
> =A0 =A0}
> }
>
> Initial .* is redundant, start of the expect string is not anchored.
>
> \* is equal to * as the first level of backslashes is parsed by TCL
> interpreter, not by the regex compiler.
>
> If one fixes \* -> \\* to really match an asterisk it no longer matches.
> The asterisk is preceded by a newline, not by a space as in your regex st=
ring.

Thanks for this precision, the Dejagnu testsuite is not the easiest
tool to master ...

> Initial .* is redundant, start of the expect string is not anchored.

just with this comment, I noticed that a lot of my tests not wrong,
but not correctly written at least, and almost the same for
> If one fixes \* -> \\* to really match an asterisk it no longer matches.


Cordially,

Kevin