File: fn-abi.rs

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rustc 1.87.0%2Bdfsg1-1
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//@ run-pass
// Ensure that declarations and types which use `extern fn` both have the same
// ABI (#9309).

//@ aux-build:fn-abi.rs

extern crate fn_abi;

extern "C" {
    fn foo();
}

pub fn main() {
    // Will only type check if the type of _p and the decl of foo use the
    // same ABI
    let _p: unsafe extern "C" fn() = foo;
}