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| author | Albert Larsan <74931857+albertlarsan68@users.noreply.github.com> | 2023-01-05 09:13:28 +0100 |
|---|---|---|
| committer | Albert Larsan <74931857+albertlarsan68@users.noreply.github.com> | 2023-01-11 09:32:08 +0000 |
| commit | cf2dff2b1e3fa55fa5415d524200070d0d7aacfe (patch) | |
| tree | 40a88d9a46aaf3e8870676eb2538378b75a263eb /tests/ui/errors/issue-99572-impl-trait-on-pointer.rs | |
| parent | ca855e6e42787ecd062d81d53336fe6788ef51a9 (diff) | |
| download | rust-cf2dff2b1e3fa55fa5415d524200070d0d7aacfe.tar.gz rust-cf2dff2b1e3fa55fa5415d524200070d0d7aacfe.zip | |
Move /src/test to /tests
Diffstat (limited to 'tests/ui/errors/issue-99572-impl-trait-on-pointer.rs')
| -rw-r--r-- | tests/ui/errors/issue-99572-impl-trait-on-pointer.rs | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/tests/ui/errors/issue-99572-impl-trait-on-pointer.rs b/tests/ui/errors/issue-99572-impl-trait-on-pointer.rs new file mode 100644 index 00000000000..272c6bd3fb7 --- /dev/null +++ b/tests/ui/errors/issue-99572-impl-trait-on-pointer.rs @@ -0,0 +1,25 @@ +// Emit additional suggestion to correct the trait implementation +// on a pointer +use std::{fmt, marker}; + +struct LocalType; + +impl fmt::Display for *mut LocalType { +//~^ ERROR only traits defined in the current crate can be implemented for arbitrary types +//~| NOTE impl doesn't use only types from inside the current crate +//~| NOTE `*mut LocalType` is not defined in the current crate because raw pointers are always foreign +//~| NOTE define and implement a trait or new type instead +//~| HELP consider introducing a new wrapper type + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + write!(f, "This not compile") + } +} + +impl<T> marker::Copy for *mut T { +//~^ ERROR only traits defined in the current crate can be implemented for arbitrary types +//~| NOTE impl doesn't use only types from inside the current crate +//~| NOTE `*mut T` is not defined in the current crate because raw pointers are always foreign +//~| NOTE define and implement a trait or new type instead +} + +fn main() {} |
