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Diffstat (limited to 'compiler/rustc_error_codes/src/error_codes/E0751.md')
| -rw-r--r-- | compiler/rustc_error_codes/src/error_codes/E0751.md | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/compiler/rustc_error_codes/src/error_codes/E0751.md b/compiler/rustc_error_codes/src/error_codes/E0751.md new file mode 100644 index 000000000..8794f7868 --- /dev/null +++ b/compiler/rustc_error_codes/src/error_codes/E0751.md @@ -0,0 +1,12 @@ +There are both a positive and negative trait implementation for the same type. + +Erroneous code example: + +```compile_fail,E0751 +trait MyTrait {} +impl MyTrait for i32 { } +impl !MyTrait for i32 { } // error! +``` + +Negative implementations are a promise that the trait will never be implemented +for the given types. Therefore, both cannot exists at the same time. |