On 2012-06-07 22:04 +0200, Thomas Dickey wrote:
> On Thu, Jun 07, 2012 at 01:43:11PM +0200, Sven Joachim wrote:
>> On 2012-06-07 12:51 +0200, Thomas Dickey wrote:
>>
>> > On Thu, Jun 07, 2012 at 06:42:24AM +0000, shawn wrote:
>> >> Package: libncursesw5
>> >> Version: 5.9-8
>> >> Severity: important
>> >> Tags: upstream
>> >>
>> >> int main() {
>> >> struct pollfd myfds;
>> >> int ret;
>> >>
>> >> myfds.fd = 0;
>> >> myfds.events = POLLIN;
>> >>
>> >> ret = poll(&myfds, 1, 100);
>> >
>> > Reflecting on it, the check relies on the given file-descriptor and
>> > timeout.
>> > Standard input is not redirected.
>> >
>> > The check does need a tty though (for Darwin). The return-code for that
>> > might
>> > be a -1 (making a comparison for that case more apt - will have to test).
>> >
>> > Almost all of my build-logs (reviewing my build-logs, I see one out of ~60
>> > combinations failing for Linux) for Linux show it working - probably
>> > depends
>> > upon the environment.
>>
>> I am surprised to read that, since the test has apparently always failed
>> not only on the Debian buildds, but also in Fedora[1]. For me it also
>> fails unless stdin is redirected.
>
> I don't know either: I last changed that check (CF_FUNC_POLL) at the end of
> January (to add the check for /dev/null), and have rebuilt most platforms
> since
> then. The previous version is from 2006.
>
> I build everything essentially in the same way (redirecting stdout/stderr,
Do you also redirect stdin? Otherwise it's hard to get a non-zero
result from poll(): you have to manage pressing the return key during
the 100 milliseconds the test takes, it seems.
Cheers,
Sven
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