erlang/otp

A compiler (warning?) message could be clearer

Opened this issue · 1 comments

michaelklishin commented

When gen_batch_server is compiled with erlc from Erlang/OTP 26.2.x, the compiler emits the following:

gen_batch_server.erl:269: Warning: INFO: receive matches any message, this is always fast
gen_batch_server.erl:323: Warning: INFO: receive matches any message, this is always fast

I find this message to not be particularly helpful. Two specific complaints:

  1. Is this a warning? is this an info message? It says both
  2. This is likely meant to be a warning but it says "this is always fast" which is usually something to strive for

So what is this message trying to tell me? With the current wording I have to guess.

jhogberg commented

Thanks for your report!

The messages printed by bin_opt_info and recv_opt_info are returned as warnings to keep things simpler internally. The compiler currently lacks a mechanism for purely informational messages, and we're thinking of adding one in the future -- it's just fairly low priority at the moment.

In the meantime, whenever you see Warning: INFO:, read it as INFO:. :-)

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