Re: NLS for extension

On Thu, Mar 21, 2024 at 7:49 AM Ed Behn <ed@behn.us> wrote:
>     I'll start by admitting that I am a typical American who only speaks one language.
>     I maintain the PL./Haskell extension (https://github.com/ed-o-saurus/PLHaskell). I recently received a bug report from a user who is unable to load the extension when they have set lc_messages to something other than 'C' or 'en_US.utf8' (https://github.com/ed-o-saurus/PLHaskell/issues/9). I'm not sure how to address this issue. I know it has something to do with NLS, but I'm confused about what I need to do to get an extension to work. The documentation in chapter 57 of the user's manual seems to address stand-alone programs. At least that is my understanding.
>     I am using my own makefile, not the one from pg_config.

That seems really weird. You wouldn't think that an NLS problem could
cause an invalid ELF header.

If I were trying to troubleshoot this, I'd set up the failing scenario
(i.e. lc_messages=pt_BR.utf8), set a breakpoint in the server on
errstart, and then perform the failing action. Then I'd use gdb to get
a backtrace from the point where the error was thrown, and hope that
the contents of that backtrace made it more clear what was actually
happening.

--
Robert Haas
EDB: http://www.enterprisedb.com