diff options
| -rw-r--r-- | src/libcoretest/ptr.rs | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/src/libcoretest/ptr.rs b/src/libcoretest/ptr.rs index e0a9f4e5d42..f7fe61896f8 100644 --- a/src/libcoretest/ptr.rs +++ b/src/libcoretest/ptr.rs @@ -173,12 +173,16 @@ fn test_unsized_unique() { } #[test] -fn test_variadic_fnptr() { +#[allow(warnings)] +// Have a symbol for the test below. It doesn’t need to be an actual variadic function, match the +// ABI, or even point to an actual executable code, because the function itself is never invoked. +#[no_mangle] +pub fn test_variadic_fnptr() { use core::hash::{Hash, SipHasher}; - extern "C" { - fn printf(_: *const u8, ...); + extern { + fn test_variadic_fnptr(_: u64, ...) -> f64; } - let p: unsafe extern "C" fn(*const u8, ...) = printf; + let p: unsafe extern fn(u64, ...) -> f64 = test_variadic_fnptr; let q = p.clone(); assert_eq!(p, q); assert!(!(p < q)); |