From 64d98f8ee037282c35007b64c2649055c56af1db Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:19:03 +0200 Subject: Merging upstream version 1.68.2+dfsg1. Signed-off-by: Daniel Baumann --- tests/ui/nll/relate_tys/hr-fn-aba-as-aaa.rs | 15 +++++++++++++++ 1 file changed, 15 insertions(+) create mode 100644 tests/ui/nll/relate_tys/hr-fn-aba-as-aaa.rs (limited to 'tests/ui/nll/relate_tys/hr-fn-aba-as-aaa.rs') diff --git a/tests/ui/nll/relate_tys/hr-fn-aba-as-aaa.rs b/tests/ui/nll/relate_tys/hr-fn-aba-as-aaa.rs new file mode 100644 index 000000000..7cc0acf45 --- /dev/null +++ b/tests/ui/nll/relate_tys/hr-fn-aba-as-aaa.rs @@ -0,0 +1,15 @@ +// Test that the NLL `relate_tys` code correctly deduces that a +// function returning always its first argument can be upcast to one +// that returns either first or second argument. +// +// check-pass +// compile-flags:-Zno-leak-check + +fn make_it() -> for<'a, 'b> fn(&'a u32, &'b u32) -> &'a u32 { + panic!() +} + +fn main() { + let a: for<'a> fn(&'a u32, &'a u32) -> &'a u32 = make_it(); + drop(a); +} -- cgit v1.2.3