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