Andres Freund <and...@anarazel.de> writes:
> It'd be nice if there were an easy way to write a switch() where the
> compiler enforces that all enum values are checked, but still had the
> possibility to have a 'default:' block for error checking... I can't
> quite come up with a good approach to emulate that though.
Yeah, that would sure make things better. I was considering
something like
switch (enumvalue)
{
case A: ...
case B: ...
...
#ifndef USE_ASSERT_CHECKING
default:
elog(ERROR, ...);
#endif
}
so that you get the runtime protection in production builds but not
debug builds ... except that yes, you really want that protection in
debug builds too. Maybe the #if could be on some other symbol so that
the default: is normally enabled in all builds, but we have some
lonely buildfarm animal that disables it and builds with -Werror to
get our attention for omitted cases?
regards, tom lane
