diff options
Diffstat (limited to 'tests/ui/impl-trait/closure-calling-parent-fn.rs')
-rw-r--r-- | tests/ui/impl-trait/closure-calling-parent-fn.rs | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/tests/ui/impl-trait/closure-calling-parent-fn.rs b/tests/ui/impl-trait/closure-calling-parent-fn.rs new file mode 100644 index 000000000..9dab334a2 --- /dev/null +++ b/tests/ui/impl-trait/closure-calling-parent-fn.rs @@ -0,0 +1,12 @@ +// Regression test for #54593: the MIR type checker was going wrong +// when a closure returns the `impl Copy` from its parent fn. It was +// (incorrectly) replacing the `impl Copy` in its return type with the +// hidden type (`()`) but that type resulted from a recursive call to +// `foo` and hence is treated opaquely within the closure body. This +// resulted in a failed subtype relationship. +// +// check-pass + +fn foo() -> impl Copy { || foo(); } +fn bar() -> impl Copy { || bar(); } +fn main() { } |