diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/nll/relate_tys/hr-fn-aaa-as-aba.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/nll/relate_tys/hr-fn-aaa-as-aba.rs')
-rw-r--r-- | src/test/ui/nll/relate_tys/hr-fn-aaa-as-aba.rs | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/test/ui/nll/relate_tys/hr-fn-aaa-as-aba.rs b/src/test/ui/nll/relate_tys/hr-fn-aaa-as-aba.rs new file mode 100644 index 000000000..7891bab09 --- /dev/null +++ b/src/test/ui/nll/relate_tys/hr-fn-aaa-as-aba.rs @@ -0,0 +1,24 @@ +// Test that the NLL `relate_tys` code correctly deduces that a +// function returning either argument CANNOT be upcast to one +// that returns always its first argument. +// +// compile-flags:-Zno-leak-check + +fn make_it() -> for<'a> fn(&'a u32, &'a u32) -> &'a u32 { + panic!() +} + +fn foo() { + let a: for<'a, 'b> fn(&'a u32, &'b u32) -> &'a u32 = make_it(); + //~^ ERROR mismatched types [E0308] + drop(a); +} + +fn bar() { + // The code path for patterns is mildly different, so go ahead and + // test that too: + let _: for<'a, 'b> fn(&'a u32, &'b u32) -> &'a u32 = make_it(); + //~^ ERROR mismatched types [E0308] +} + +fn main() {} |