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Diffstat (limited to 'compiler/rustc_error_codes/src/error_codes/E0714.md')
-rw-r--r-- | compiler/rustc_error_codes/src/error_codes/E0714.md | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/compiler/rustc_error_codes/src/error_codes/E0714.md b/compiler/rustc_error_codes/src/error_codes/E0714.md new file mode 100644 index 000000000..45d1cafa6 --- /dev/null +++ b/compiler/rustc_error_codes/src/error_codes/E0714.md @@ -0,0 +1,19 @@ +A `#[marker]` trait contained an associated item. + +Erroneous code example: + +```compile_fail,E0714 +#![feature(marker_trait_attr)] +#![feature(associated_type_defaults)] + +#[marker] +trait MarkerConst { + const N: usize; // error! +} + +fn main() {} +``` + +The items of marker traits cannot be overridden, so there's no need to have them +when they cannot be changed per-type anyway. If you wanted them for ergonomic +reasons, consider making an extension trait instead. |