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/E0568.md | 26 ++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 compiler/rustc_error_codes/src/error_codes/E0568.md (limited to 'compiler/rustc_error_codes/src/error_codes/E0568.md') diff --git a/compiler/rustc_error_codes/src/error_codes/E0568.md b/compiler/rustc_error_codes/src/error_codes/E0568.md new file mode 100644 index 000000000..17b3f5e31 --- /dev/null +++ b/compiler/rustc_error_codes/src/error_codes/E0568.md @@ -0,0 +1,26 @@ +A super trait has been added to an auto trait. + +Erroneous code example: + +```compile_fail,E0568 +#![feature(auto_traits)] + +auto trait Bound : Copy {} // error! + +fn main() {} +``` + +Since an auto trait is implemented on all existing types, adding a super trait +would filter out a lot of those types. In the current example, almost none of +all the existing types could implement `Bound` because very few of them have the +`Copy` trait. + +To fix this issue, just remove the super trait: + +``` +#![feature(auto_traits)] + +auto trait Bound {} // ok! + +fn main() {} +``` -- cgit v1.2.3