wire format is still unstable

[japaric]

No description provided.

[jonas-schievink]

Hmm, could we put a version in the symbols to enforce this?

[japaric]

In principle we can put a symbol named BINFMT_VERSION in the app; that symbol could be in .rodata and contain the string "1" or "$commit_hash". The difficulty is that the linker will drop the symbol if it's not used. We can force a use with something like (&BINFMT_VERSION as *const u8).read_volatile() for example but the question is where to put that load; it must be reachable from the app logic or it will be optimized away and won't appear in the final artifact.

But yeah would be good to have something like that.