diff options
Diffstat (limited to 'src/test/ui/lazy-type-alias-impl-trait/recursion4.rs')
-rw-r--r-- | src/test/ui/lazy-type-alias-impl-trait/recursion4.rs | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/src/test/ui/lazy-type-alias-impl-trait/recursion4.rs b/src/test/ui/lazy-type-alias-impl-trait/recursion4.rs new file mode 100644 index 000000000..57dd7fb06 --- /dev/null +++ b/src/test/ui/lazy-type-alias-impl-trait/recursion4.rs @@ -0,0 +1,23 @@ +#![feature(type_alias_impl_trait)] + +type Foo = impl std::fmt::Debug; + +fn foo(b: bool) -> Foo { + if b { + return vec![]; + } + let mut x = foo(false); + x = std::iter::empty().collect(); //~ ERROR `Foo` cannot be built from an iterator + vec![] +} + +fn bar(b: bool) -> impl std::fmt::Debug { + if b { + return vec![]; + } + let mut x = bar(false); + x = std::iter::empty().collect(); //~ ERROR `impl Debug` cannot be built from an iterator + vec![] +} + +fn main() {} |