e.c

gistfile1.txt

volatile MemoryContext oldcontext = CurrentMemoryContext;
PG_TRY();
{
  // ...
}
PG_CATCH();
{
  MemoryContext ecxt = MemoryContextSwitchTo(oldcontext);
  ErrorData *edata = CopyErrorData();
  // FlushErrorState(); // not needed?
  MemoryContextSwitchTo(ecxt);
  ereport( ERROR, ( errmsg( "An unexpected error occurred: %s", edata->message ) ) );
}
PG_END_TRY();