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//@ build-pass
//@ compile-flags:-Zpolymorphize=on -Csymbol-mangling-version=v0
fn foo(f: impl Fn()) {
let x = |_: ()| ();
// Don't use `f` in `y`, but refer to `x` so that the closure substs contain a reference to
// `x` that will differ for each instantiation despite polymorphisation of the varying
// argument.
let y = || x(());
// Consider `f` used in `foo`.
f();
// Use `y` so that it is visited in monomorphisation collection.
y();
}
fn entry_a() {
foo(|| ());
}
fn entry_b() {
foo(|| ());
}
fn main() {
entry_a();
entry_b();
}
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