undefined symbol: __rust_probestack on nightly

[juntyr]

wasmer depends on the __rust_probestack symbol here:

wasmer/lib/vm/src/probestack.rs

Line 62 in d8f313b

pub static PROBESTACK: unsafe extern "C" fn() = __rust_probestack;

With rust-lang/rust#141992, this symbol is now mangled and no longer exposed (on nightly). Therefore, building wasmer fails during linking, see rust-lang/rust#142612.

See rust-lang/rust#142612 (comment) for a proposed fix

[juntyr]

Please prioritise fixing this issue in a (patch?) release, nightly builds (including our CI) are now failing because of wasmer and in a few months this will break stable as well.

[robertbastian]

The Rust change is now in beta.

[syrusakbary]

Thanks for the ping. I think the solution of vendoring the rust probestack inside of Wasmer is the best possibility. We are thinking on having conditional compilation (with or without the vendor) depending on the Rust version.

Do you have time @juntyr to work on a fix? If not, we can prioritize this for next week. Let us know!

[juntyr]

@syrusakbary I unfortunately don't have time myself, sorry.

[mischnic]

Would be great if this was fixed soon.
This prevents downstream users of the crate (in our case pulled in by the swc plugin runner) from upgrading the rustc nightly version. And there are multiple rustc bugs for which we would like to upgrade the compiler but can't because of this.