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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/E0568.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/E0568.md')
-rw-r--r-- | compiler/rustc_error_codes/src/error_codes/E0568.md | 26 |
1 files changed, 26 insertions, 0 deletions
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() {} +``` |