mirror of https://github.com/rust-lang/rust
57 lines
1.4 KiB
Rust
57 lines
1.4 KiB
Rust
//@ build-fail
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//@ revisions: legacy v0
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//@[legacy]compile-flags: -Z unstable-options -C symbol-mangling-version=legacy
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//@[v0]compile-flags: -C symbol-mangling-version=v0
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//@[legacy]normalize-stderr-test: "h[\w{16}]+" -> "SYMBOL_HASH"
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#![feature(rustc_attrs)]
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pub(crate) struct Foo<I, E>(I, E);
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pub trait Iterator2 {
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type Item;
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fn next(&mut self) -> Option<Self::Item>;
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fn find<P>(&mut self, predicate: P) -> Option<Self::Item>
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where
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Self: Sized,
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P: FnMut(&Self::Item) -> bool,
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{
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unimplemented!()
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}
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}
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struct Bar;
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impl Iterator2 for Bar {
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type Item = (u32, u16);
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fn next(&mut self) -> Option<Self::Item> {
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unimplemented!()
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}
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}
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impl<I, T, E> Iterator2 for Foo<I, E>
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where
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I: Iterator2<Item = (T, E)>,
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{
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type Item = T;
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#[rustc_symbol_name]
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//[legacy]~^ ERROR symbol-name(_ZN72_$LT$issue_75326..Foo$LT$I$C$E$GT$$u20$as$u20$issue_75326..Iterator2$GT$4next
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//[legacy]~| ERROR demangling(<issue_75326::Foo<I,E> as issue_75326::Iterator2>::next
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//[legacy]~| ERROR demangling-alt(<issue_75326::Foo<I,E> as issue_75326::Iterator2>::next)
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//[v0]~^^^^ ERROR symbol-name
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//[v0]~| ERROR demangling
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//[v0]~| ERROR demangling-alt(<issue_75326::Foo<_, _> as issue_75326::Iterator2>::next)
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fn next(&mut self) -> Option<Self::Item> {
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self.find(|_| true)
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}
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}
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fn main() {
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let mut a = Foo(Bar, 1u16);
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let _ = a.next();
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}
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