mirror of https://github.com/rust-lang/rust.git
26 lines
836 B
Rust
26 lines
836 B
Rust
// This test checks that encapsulation symbols are not garbage collected by the linker.
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// LLD will remove them by default, so this test checks that we pass `-znostart-stop-gc` to LLD
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// to avoid that behavior. Without that flag, the test should fail.
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// This test is inspired by the behavior of the linkme crate.
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//
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//@ build-pass
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//@ only-x86_64-unknown-linux-gnu
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unsafe extern "Rust" {
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// The __start_ section name is magical for the linker,
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// It will put link sections named EXTERNFNS after it.
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#[link_name = "__start_EXTERNFNS"]
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static SECTION_START: fn();
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}
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#[used]
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#[unsafe(link_section = "EXTERNFNS")]
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static EXTERN_FN_LOCAL: fn() = extern_fn;
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fn extern_fn() {}
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fn main() {
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// We need to reference the SECTION_START symbol to avoid it being garbage collected
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let slice = unsafe { SECTION_START };
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}
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