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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /compiler/rustc_error_codes/src/error_codes/E0774.md | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'compiler/rustc_error_codes/src/error_codes/E0774.md')
-rw-r--r-- | compiler/rustc_error_codes/src/error_codes/E0774.md | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/compiler/rustc_error_codes/src/error_codes/E0774.md b/compiler/rustc_error_codes/src/error_codes/E0774.md new file mode 100644 index 000000000..79793ba9d --- /dev/null +++ b/compiler/rustc_error_codes/src/error_codes/E0774.md @@ -0,0 +1,24 @@ +`derive` was applied on something which is not a struct, a union or an enum. + +Erroneous code example: + +```compile_fail,E0774 +trait Foo { + #[derive(Clone)] // error! + type Bar; +} +``` + +As said above, the `derive` attribute is only allowed on structs, unions or +enums: + +``` +#[derive(Clone)] // ok! +struct Bar { + field: u32, +} +``` + +You can find more information about `derive` in the [Rust Book]. + +[Rust Book]: https://doc.rust-lang.org/book/appendix-03-derivable-traits.html |