[BUG] compile error on i586: expected (), found FPUControlWord

[jvdd]

Description

When compiling this crate in GitHub actions on a i586-unknown-linux-gnu target, the following error occurs

   Compiling lexical-parse-float v1.0.5
error[E0308]: mismatched types
  --> /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/lexical-parse-float-1.0.5/src/number.rs:77:23
   |
77 |         let _cw: () = set_precision::<F>();
   |                  --   ^^^^^^^^^^^^^^^^^^^^ expected `()`, found `FPUControlWord`
   |                  |
   |                  expected due to this

For more information about this error, try `rustc --explain E0308`.
error: could not compile `lexical-parse-float` (lib) due to 1 previous error

rust-lexical/lexical-parse-float/src/number.rs

Line 77 in 5af823f

let _cw: () = set_precision::<F>();

Prerequisites

• Rust version: nightly-x86_64-unknown-linux-gnu unchanged - rustc 1.86.0-nightly (bef3c3b01 2025-02-04)
• lexical version: lexical-parse-float v1.0.5 (lexical-util is v1.0.6)
• lexical compilation features used: (default?)

Additional Context

The link to the GitHub CI that fails:

https://github.com/jvdd/argminmax/actions/runs/13158734781/job/36726072805

[Alexhuszagh]

I was able to replicate this using cross build --target i586-unknown-linux-gnu, so this is confirmed and likely should be added to CI as well. I'll have to check if this affects correctness so this must be tested in CI as well. This does not affect the i686-unknown-linux-gnu target, so this is fully confirmed.

Thank you for discovering this.

[Alexhuszagh]

Reopening this until a release is published.