mirror of https://github.com/rust-lang/rust
25 lines
692 B
Rust
25 lines
692 B
Rust
// Check extern items cannot be const + `rustfix` suggests using
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// extern static.
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//
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// #54388: an unused reference to an undefined static may or may not
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// compile. To sidestep this by using one that *is* defined.
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//@ run-rustfix
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//@ compile-flags: -g
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use std::ffi::c_int;
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#[link(name = "rust_test_helpers", kind = "static")]
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extern "C" {
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const rust_dbg_static_mut: c_int; //~ ERROR extern items cannot be `const`
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}
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fn main() {
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// We suggest turning the (illegal) extern `const` into an extern `static`,
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// but this also requires `unsafe` (a deny-by-default lint at comment time,
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// future error; Issue #36247)
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unsafe {
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let _x = rust_dbg_static_mut;
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}
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}
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