20d3d576d5
When looking for instances which could either be dynamically called through a vtable or through a concrete trait method, we missed `FnPtrShim`, instead only looking at `Item` and closure-likes.
33 lines
804 B
Rust
33 lines
804 B
Rust
// Verifies that types that implement the Fn, FnMut, or FnOnce traits can be
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// called through their trait methods.
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//
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//@ needs-sanitizer-cfi
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//@ only-linux
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//@ ignore-backends: gcc
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//@ compile-flags: -Ctarget-feature=-crt-static -Ccodegen-units=1 -Clto -Cprefer-dynamic=off -Copt-level=0 -Zsanitizer=cfi -Cunsafe-allow-abi-mismatch=sanitizer --test
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//@ run-pass
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#![feature(fn_traits)]
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#![feature(unboxed_closures)]
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fn foo(_a: u32) {}
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#[test]
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fn test_fn_trait() {
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let f: Box<dyn Fn(u32)> = Box::new(foo);
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Fn::call(&f, (0,));
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}
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#[test]
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fn test_fnmut_trait() {
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let mut a = 0;
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let mut f: Box<dyn FnMut(u32)> = Box::new(|x| a += x);
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FnMut::call_mut(&mut f, (1,));
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}
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#[test]
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fn test_fnonce_trait() {
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let f: Box<dyn FnOnce(u32)> = Box::new(foo);
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FnOnce::call_once(f, (2,));
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}
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