From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:02:58 +0200 Subject: Adding upstream version 1.64.0+dfsg1. Signed-off-by: Daniel Baumann --- .../rustc_error_codes/src/error_codes/E0774.md | 24 ++++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 compiler/rustc_error_codes/src/error_codes/E0774.md (limited to 'compiler/rustc_error_codes/src/error_codes/E0774.md') 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 -- cgit v1.2.3