f39ed207fe
This commit disables polymorphisation to resolve regressions related to closures which inherit unused generic parameters and are then used in casts or reflection. Signed-off-by: David Wood <david@davidtw.co>
24 lines
444 B
Rust
24 lines
444 B
Rust
// build-fail
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// compile-flags:-Zpolymorphize=on
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#![feature(rustc_attrs)]
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// This test checks that `T` is considered used in `foo`, because it is used in a predicate for
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// `I`, which is used.
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#[rustc_polymorphize_error]
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fn bar<I>() {
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//~^ ERROR item has unused generic parameters
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}
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#[rustc_polymorphize_error]
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fn foo<I, T>(_: I)
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where
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I: Iterator<Item = T>,
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{
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bar::<I>()
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}
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fn main() {
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let x = &[2u32];
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foo(x.iter());
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}
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