Aborted using `cfg-if`: memory allocation of <tons of> bytes failed

[caoweinian]

origin: https://internals.rust-lang.org/t/cargo-fmt-failed-with-infinite-memory-request/16950

Using cargo fmt to format the following code causes the process to be aborted with one line error message: "memory allocation of <tons of> bytes failed":

// cfg-if: version 1.0.0
cfg_if::cfg_if! {
    if #[cfg(windows)] {
        compile_error!{"..."};
    }
}

rustc/cargo: 1.62.0
rustfmt: 1.4.38-stable

[ytmimi]

Thanks for reaching out.

I believe this may be a duplicate of #4442. I just checked and this looks to be resolved by #5341, which is still under review.

[ytmimi]

I added a test case for this in #5341. Testing locally things work fine so we'll just need to see if things pass in CI.

[ytmimi]

going to close this as a duplicate of #4442. I'd follow that issue or PR #5341 to see when the fix is merged.