[postgis-users] Error handling and reporting with liblwgeom functions

[Igor Stassiy]

Hello,

I am developing an extension for postgres that links dynamically with
liblwgeom. I am new to the subject to please bear with me.

>From what I understand, the errors are reported via:

static void default_errorreporter(const char *fmt, va_list ap);
lwreporter lwerror_var = default_errorreporter;

and default error reporter calls exit(1). This would terminate the current
connection to the database, however then liblwgeom is used from within
postgis (> 2.0), these callbacks are overriden with the call:

_PG_init(void)

in

https://github.com/postgis/postgis/blob/426d8414298272b4ace32e361a40adfd081b2e60/postgis/postgis_module.c#L44

which calls elog or ereport and those function calls in turn also terminate
transaction but in a different way.

So the question is it assumed that anything reported with lwerror not
recoverable and should terminate the current transaction and client
connection?

Thank you,
Igor
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