diff options
Diffstat (limited to 'compiler/rustc_error_codes/src/error_codes/E0667.md')
-rw-r--r-- | compiler/rustc_error_codes/src/error_codes/E0667.md | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/compiler/rustc_error_codes/src/error_codes/E0667.md b/compiler/rustc_error_codes/src/error_codes/E0667.md new file mode 100644 index 000000000..0709a24c4 --- /dev/null +++ b/compiler/rustc_error_codes/src/error_codes/E0667.md @@ -0,0 +1,18 @@ +`impl Trait` is not allowed in path parameters. + +Erroneous code example: + +```compile_fail,E0667 +fn some_fn(mut x: impl Iterator) -> <impl Iterator>::Item { // error! + x.next().unwrap() +} +``` + +You cannot use `impl Trait` in path parameters. If you want something +equivalent, you can do this instead: + +``` +fn some_fn<T: Iterator>(mut x: T) -> T::Item { // ok! + x.next().unwrap() +} +``` |