41 lines
856 B
Rust
41 lines
856 B
Rust
// run-pass
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// The actual regression test from #63479. (Including this because my
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// first draft at fn-ptr-is-structurally-matchable.rs failed to actually
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// cover the case this hit; I've since expanded it accordingly, but the
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// experience left me wary of leaving this regression test out.)
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#![warn(pointer_structural_match)]
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#[derive(Eq)]
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struct A {
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a: i64
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}
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impl PartialEq for A {
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#[inline]
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fn eq(&self, other: &Self) -> bool {
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self.a.eq(&other.a)
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}
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}
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type Fn = fn(&[A]);
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fn my_fn(_args: &[A]) {
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println!("hello world");
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}
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const TEST: Fn = my_fn;
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struct B(Fn);
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fn main() {
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let s = B(my_fn);
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match s {
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B(TEST) => println!("matched"),
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//~^ WARN pointers in patterns behave unpredictably
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//~| WARN this was previously accepted by the compiler but is being phased out
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_ => panic!("didn't match")
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};
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}
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