[apw]

It's not clear that a nicely formatted error message is preferable to a core dump.

With a core dump one can explore the execution environment at the time of the crash.

A nice compromise is a macro that prints an error message and then calls __builtin_trap().

[afarrell]

But a nicely formatted error message, so long as it is correct, can be read by many more people than a core dump.

I don't know how I would read a core dump of an error in a python program to understand where an exception came from.