Re: Flipping ifelse.exp test

[Andrew STUBBS <andrew.stubbs@st.com>]

Daniel Jacobowitz wrote:
> On Tue, Jul 18, 2006 at 01:02:48AM +0200, Mark Kettenis wrote:
>> (gdb) if 1
>>  >end
>> (gdb) FAIL: gdb.base/ifelse.exp: if 1 with empty body
>> echo got here\n
>> got here
>> (gdb) PASS: gdb.base/ifelse.exp: if 0 with empty body
>>
>> I fail to see what's wrong with the test though.  The regular
>> expressions seem to be properly anchored.
>>
>> Can anyone spot the problem?
> 
> Yes.  The default pattern in gdb_test_multiple is anchored by
> "$gdb_prompt $", which occurs (if you're unlucky with buffering)
> right in the middle of this test.
> 
> Basically you can't do a test that requires two gdb prompts.
> I'd recommend removing the "echo got_here" from that test and the other
> similar ones.  Another thing that might work would be an explicit
> anchored pattern to catch the first gdb prompt and continue, below the
> pass pattern, but that's prone to timeouts if something goes wrong..
> 

Hmmm, the point of the 'got here' was to ensure that GDB hadn't died 
horribly, and that it was still capable of running commands. I think the 
problem was that there is no output from the actual statement being 
tested. That was with the original script I had. Perhaps now it is 
implemented with gdb_test_multiple the prompt is enough.

A slightly wackier alternative might be to change the GDB prompt for 
this test.

Andrew