unresolved-macro-call: vec! in library/proc_macro/src/bridge

[lf-]

r-a version: 11b9233

.vim/coc-settings.json:

{
    "rust-analyzer.checkOnSave.overrideCommand": [
        "./x.py",
        "check",
        "--json-output"
    ],
    "rust-analyzer.rustfmt.overrideCommand": [
      "./build/x86_64-unknown-linux-gnu/stage0/bin/rustfmt"
    ],
    "rust-analyzer.cargo.runBuildScripts": false,
    "rust-analyzer.procMacro.enable": false
}

Reproduction steps:

• Open library/proc_macro/src/bridge/buffer.rs in the rust repo (I happened to use 64de4979) with the recommended config.
• Get an unresolved-macro-call here:

impl<T: Copy> Default for Buffer<T> {
    fn default() -> Self {
        Self::from(vec![])
                // ^^^
    }
}

cc #8915

[jonas-schievink]

This happens because we use libstd and liballoc from the workspace and turn on cfg(test) for them. The vec! macro has a #[macro_export]ed version behind #[cfg(not(test))] here, and a private version behind #[cfg(test)] here.

[Veykril]

This no longer happens