| // Verifies that type metadata identifiers for for weakly-linked symbols are |
| // emitted correctly. |
| // |
| //@ needs-sanitizer-cfi |
| //@ compile-flags: -Clinker-plugin-lto -Copt-level=0 -Zsanitizer=cfi -Ctarget-feature=-crt-static |
| #![crate_type = "bin"] |
| #![feature(linkage)] |
| |
| unsafe extern "C" { |
| #[linkage = "extern_weak"] |
| static FOO: Option<unsafe extern "C" fn(f64) -> ()>; |
| } |
| // CHECK: @_rust_extern_with_linkage_FOO = internal global ptr @FOO |
| |
| fn main() { |
| unsafe { |
| if let Some(method) = FOO { |
| method(4.2); |
| // CHECK: call i1 @llvm.type.test(ptr {{%method|%0}}, metadata !"_ZTSFvdE") |
| } |
| } |
| } |
| |
| // CHECK: declare !type !{{[0-9]+}} !type !{{[0-9]+}} !type !{{[0-9]+}} !type !{{[0-9]+}} extern_weak void @FOO(double) unnamed_addr #{{[0-9]+}} |
