diff options
Diffstat (limited to 'src/test/ui/regions/regions-fn-subtyping-2.rs')
-rw-r--r-- | src/test/ui/regions/regions-fn-subtyping-2.rs | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/test/ui/regions/regions-fn-subtyping-2.rs b/src/test/ui/regions/regions-fn-subtyping-2.rs new file mode 100644 index 000000000..83949ddba --- /dev/null +++ b/src/test/ui/regions/regions-fn-subtyping-2.rs @@ -0,0 +1,20 @@ +// run-pass +#![allow(dead_code)] +// Issue #2263. + +// Here, `f` is a function that takes a pointer `x` and a function +// `g`, where `g` requires its argument `y` to be in the same region +// that `x` is in. +// pretty-expanded FIXME #23616 + +fn has_same_region(f: Box<dyn for<'a> FnMut(&'a isize, Box<dyn FnMut(&'a isize)>)>) { + // `f` should be the type that `wants_same_region` wants, but + // right now the compiler complains that it isn't. + wants_same_region(f); +} + +fn wants_same_region(_f: Box<dyn for<'b> FnMut(&'b isize, Box<dyn FnMut(&'b isize)>)>) { +} + +pub fn main() { +} |