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Diffstat (limited to '')
-rw-r--r-- | src/test/ui/issues/issue-22638.rs | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/src/test/ui/issues/issue-22638.rs b/src/test/ui/issues/issue-22638.rs new file mode 100644 index 000000000..198ceccc2 --- /dev/null +++ b/src/test/ui/issues/issue-22638.rs @@ -0,0 +1,63 @@ +// build-fail +// normalize-stderr-test: "<\[closure@.+`" -> "$$CLOSURE`" +// normalize-stderr-test: ".nll/" -> "/" + +#![allow(unused)] + +#![recursion_limit = "20"] +#![type_length_limit = "20000000"] +#![crate_type = "rlib"] + +#[derive(Clone)] +struct A (B); + +impl A { + pub fn matches<F: Fn()>(&self, f: &F) { + let &A(ref term) = self; + term.matches(f); + } +} + +#[derive(Clone)] +enum B { + Variant1, + Variant2(C), +} + +impl B { + pub fn matches<F: Fn()>(&self, f: &F) { + match self { + &B::Variant2(ref factor) => { + factor.matches(&|| ()) + } + _ => unreachable!("") + } + } +} + +#[derive(Clone)] +struct C (D); + +impl C { + pub fn matches<F: Fn()>(&self, f: &F) { + let &C(ref base) = self; + base.matches(&|| { + C(base.clone()).matches(f) + }) + } +} + +#[derive(Clone)] +struct D (Box<A>); + +impl D { + pub fn matches<F: Fn()>(&self, f: &F) { + let &D(ref a) = self; + a.matches(f) + //~^ ERROR reached the recursion limit while instantiating `A::matches::<[closure + } +} + +pub fn matches() { + A(B::Variant1).matches(&(|| ())) +} |