Re: Launching debugger on self on SIGSEGV

Gurjeet Singh <singh.gurjeet@gmail.com> writes:
>     The attached patch registers a signal handler for SIGSEGV and launches
> GDB in batch mode on its own pid so that the stack leading to the SEGV can
> be dumped in the server logs.

Did you not read the thread last week about how we did not want any such
thing?

Quite aside from any postgres-specific reasons not to have any added
delay in the signal-to-database-shutdown path, this patch makes a bunch
of untenable assumptions about whether or where gdb is installed,
whether there are usable debug symbols available, whether gdb's output
will go somewhere useful, etc etc.  And on top of all that, it adds *no
functionality whatsoever* compared to a post-mortem gdb run on the core
file.
        regards, tom lane