Misleading error message when atom is passed as a part of header value

[si14]

Here it is:

Bad value on output port 'tcp_inet'

I'm not sure that this is curable, though.

[essen]

We can check that the value is a list or binary, but if it's inside an iolist we can't do anything.

[si14]

Isn't it possible to catch this error and rethrow it with better description?

[essen]

I don't know, can you post the whole error rather than just the message?

[essen]

This isn't an exception.

https://github.com/erlang/otp/blob/master/erts/emulator/beam/io.c#L1285

We can't catch it, or do anything about it other than checking the whole iodata() argument, which isn't an acceptable solution.

Closing this then! Thanks.