Michael Paquier <michael.paquier@gmail.com> writes:
> On Thu, Jun 16, 2016 at 3:40 AM, Jehan-Guillaume de Rorthais
> <jgdr@dalibo.com> wrote:
>> I just found that the following command always produce a segmentation fault
>> when external_pid_file is kept commented:
>> $ postgres -C external_pid_file
>> Segmentation fault (core dumped)
> Confirmed. puts() would print (null) on OSX even if that's not
> mentioned in the standard, and Linux would just segfault on it.
Right, this is going to be platform-specific behavior.
> So instead of your patch, I think that we'd rather just change
> PostmasterMain() so as it outputs something useful to the user in case
> of a NULL value, like that:
Agreed, fixing the -C code seems much less likely to have unexpected
side-effects than changing default values. Will push this in a bit.
regards, tom lane