[erlang-questions] r17 beam compatibility

Magnus Henoch <>
Tue Feb 4 15:21:00 CET 2014


Vlad Dumitrescu <> writes:

> Hi,
>
> This is difficult to test comprehensively, so I wil ask: Are there any
> changes in the BEAM format in R16 and R17, so that one can't run these
> newer beams on R15?
>
> I know it's not a very good idea, but I might be forced to do that... Or I
> will have to work around the problem somehow.

According to the comments in genop.tab, there are five new opcodes in
R16, but none in 17.0:

https://github.com/erlang/otp/blob/OTP_17.0-rc1/lib/compiler/src/genop.tab#L528-L538

Regards,
Magnus



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