Skip to content

Rust suggests me use compiler_builtins 💀 #148212

@suprohub

Description

@suprohub

I tried this code:
https://github.com/suprohub/cos

I expected to see normal work, but
Instead, if i add in random place of my crate f64::PI, it suggests me this problema solution:

error[E0599]: no associated item named `PI` found for type `f64` in the current scope --> src/num.rs:77:14 | 77 | f64::PI; | ^^ associated item not found in `f64` | = help: items from traits can only be used if the trait is in scope help: trait `Float` which provides `PI` is implemented but not in scope; perhaps you want to import it | 1 + use compiler_builtins::math::libm_math::support::float_traits::Float; | 

No one of my crates use compiler builtins, and my Cargo.lock dont have compiler_builtins too.

Meta

rustc --version --verbose:

noviui@suprohub ~> rustc --version --verbose rustc 1.90.0 (1159e78c4 2025-09-14) binary: rustc commit-hash: 1159e78c4747b02ef996e55082b704c09b970588 commit-date: 2025-09-14 host: x86_64-unknown-linux-gnu release: 1.90.0 LLVM version: 20.1.8 noviui@suprohub ~> 

i use latest nightly btw.

This issue goes from this issue: #142676.

Metadata

Metadata

Labels

-Zbuild-stdUnstable cargo option: -Zbuild-stdA-diagnosticsArea: Messages for errors, warnings, and lintsC-bugCategory: This is a bug.D-invalid-suggestionDiagnostics: A structured suggestion resulting in incorrect code.S-has-mcveStatus: A Minimal Complete and Verifiable Example has been found for this issueT-compilerRelevant to the compiler team, which will review and decide on the PR/issue.

Type

No type

Projects

No projects

Milestone

No milestone

Relationships

None yet

Development

No branches or pull requests

Issue actions