25 lines
790 B
Rust
25 lines
790 B
Rust
// Test an interesting corner case that ought to be legal (though the
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// current code actually gets it wrong, see below): a fn that takes
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// two arguments that are references with the same lifetime is in fact
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// equivalent to a fn that takes two references with distinct
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// lifetimes. This is true because the two functions can call one
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// another -- effectively, the single lifetime `'a` is just inferred
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// to be the intersection of the two distinct lifetimes.
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//
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//@ compile-flags:-Zno-leak-check
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use std::cell::Cell;
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fn make_cell_aa() -> Cell<for<'a> fn(&'a u32, &'a u32)> {
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panic!()
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}
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fn aa_eq_ab() {
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let a: Cell<for<'a, 'b> fn(&'a u32, &'b u32)> = make_cell_aa();
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//~^ ERROR mismatched types [E0308]
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//~| ERROR mismatched types [E0308]
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drop(a);
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}
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fn main() {}
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