diff options
Diffstat (limited to 'src/test/ui/impl-trait/point-to-type-err-cause-on-impl-trait-return.stderr')
| -rw-r--r-- | src/test/ui/impl-trait/point-to-type-err-cause-on-impl-trait-return.stderr | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/src/test/ui/impl-trait/point-to-type-err-cause-on-impl-trait-return.stderr b/src/test/ui/impl-trait/point-to-type-err-cause-on-impl-trait-return.stderr new file mode 100644 index 000000000..10510c175 --- /dev/null +++ b/src/test/ui/impl-trait/point-to-type-err-cause-on-impl-trait-return.stderr @@ -0,0 +1,194 @@ +error[E0308]: mismatched types + --> $DIR/point-to-type-err-cause-on-impl-trait-return.rs:5:5 + | +LL | fn foo() -> impl std::fmt::Display { + | ---------------------- expected `_` because of return type +... +LL | 1u32 + | ^^^^ expected `i32`, found `u32` + +error[E0308]: mismatched types + --> $DIR/point-to-type-err-cause-on-impl-trait-return.rs:12:16 + | +LL | fn bar() -> impl std::fmt::Display { + | ---------------------- expected `_` because of return type +... +LL | return 1u32; + | ^^^^ expected `i32`, found `u32` + +error[E0308]: mismatched types + --> $DIR/point-to-type-err-cause-on-impl-trait-return.rs:20:9 + | +LL | fn baz() -> impl std::fmt::Display { + | ---------------------- expected `_` because of return type +... +LL | 1u32 + | ^^^^ expected `i32`, found `u32` + +error[E0308]: `if` and `else` have incompatible types + --> $DIR/point-to-type-err-cause-on-impl-trait-return.rs:28:9 + | +LL | / if false { +LL | | 0i32 + | | ---- expected because of this +LL | | } else { +LL | | 1u32 + | | ^^^^ expected `i32`, found `u32` +LL | | } + | |_____- `if` and `else` have incompatible types + +error[E0308]: mismatched types + --> $DIR/point-to-type-err-cause-on-impl-trait-return.rs:35:14 + | +LL | fn bat() -> impl std::fmt::Display { + | ---------------------- expected `_` because of return type +... +LL | _ => 1u32, + | ^^^^ expected `i32`, found `u32` + +error[E0308]: mismatched types + --> $DIR/point-to-type-err-cause-on-impl-trait-return.rs:40:5 + | +LL | fn can() -> impl std::fmt::Display { + | ---------------------- expected `_` because of return type +LL | / match 13 { +LL | | 0 => return 0i32, +LL | | 1 => 1u32, +LL | | _ => 2u32, +LL | | } + | |_____^ expected `i32`, found `u32` + +error[E0308]: mismatched types + --> $DIR/point-to-type-err-cause-on-impl-trait-return.rs:53:13 + | +LL | fn cat() -> impl std::fmt::Display { + | ---------------------- expected `_` because of return type +... +LL | 1u32 + | ^^^^ expected `i32`, found `u32` + +error[E0308]: `match` arms have incompatible types + --> $DIR/point-to-type-err-cause-on-impl-trait-return.rs:61:14 + | +LL | / match 13 { +LL | | 0 => 0i32, + | | ---- this is found to be of type `i32` +LL | | 1 => 1u32, + | | ^^^^ expected `i32`, found `u32` +LL | | _ => 2u32, +LL | | } + | |_____- `match` arms have incompatible types + +error[E0308]: `if` and `else` have incompatible types + --> $DIR/point-to-type-err-cause-on-impl-trait-return.rs:97:9 + | +LL | / if let Some(42) = Some(42) { +LL | | 0i32 + | | ---- expected because of this +LL | | } else { +LL | | 1u32 + | | ^^^^ expected `i32`, found `u32` +LL | | } + | |_____- `if` and `else` have incompatible types + +error[E0746]: return type cannot have an unboxed trait object + --> $DIR/point-to-type-err-cause-on-impl-trait-return.rs:66:13 + | +LL | fn hat() -> dyn std::fmt::Display { + | ^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time + | + = note: for information on trait objects, see <https://doc.rust-lang.org/book/ch17-02-trait-objects.html#using-trait-objects-that-allow-for-values-of-different-types> + = note: if all the returned values were of the same type you could use `impl std::fmt::Display` as the return type + = note: for information on `impl Trait`, see <https://doc.rust-lang.org/book/ch10-02-traits.html#returning-types-that-implement-traits> + = note: you can create a new `enum` with a variant for each returned type +help: return a boxed trait object instead + | +LL | fn hat() -> Box<dyn std::fmt::Display> { + | ++++ + +help: ... and box this value + | +LL | return Box::new(0i32); + | +++++++++ + +help: ... and box this value + | +LL | Box::new(1u32) + | +++++++++ + + +error[E0308]: `match` arms have incompatible types + --> $DIR/point-to-type-err-cause-on-impl-trait-return.rs:80:14 + | +LL | / match 13 { +LL | | 0 => 0i32, + | | ---- this is found to be of type `i32` +LL | | 1 => 1u32, + | | ^^^^ expected `i32`, found `u32` +LL | | _ => 2u32, +LL | | } + | |_____- `match` arms have incompatible types + +error[E0746]: return type cannot have an unboxed trait object + --> $DIR/point-to-type-err-cause-on-impl-trait-return.rs:77:13 + | +LL | fn pug() -> dyn std::fmt::Display { + | ^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time + | + = note: for information on trait objects, see <https://doc.rust-lang.org/book/ch17-02-trait-objects.html#using-trait-objects-that-allow-for-values-of-different-types> + = note: if all the returned values were of the same type you could use `impl std::fmt::Display` as the return type + = note: for information on `impl Trait`, see <https://doc.rust-lang.org/book/ch10-02-traits.html#returning-types-that-implement-traits> + = note: you can create a new `enum` with a variant for each returned type +help: return a boxed trait object instead + | +LL | fn pug() -> Box<dyn std::fmt::Display> { + | ++++ + +help: ... and box this value + | +LL | 0 => Box::new(0i32), + | +++++++++ + +help: ... and box this value + | +LL | 1 => Box::new(1u32), + | +++++++++ + +help: ... and box this value + | +LL | _ => Box::new(2u32), + | +++++++++ + + +error[E0308]: `if` and `else` have incompatible types + --> $DIR/point-to-type-err-cause-on-impl-trait-return.rs:89:9 + | +LL | / if false { +LL | | 0i32 + | | ---- expected because of this +LL | | } else { +LL | | 1u32 + | | ^^^^ expected `i32`, found `u32` +LL | | } + | |_____- `if` and `else` have incompatible types + +error[E0746]: return type cannot have an unboxed trait object + --> $DIR/point-to-type-err-cause-on-impl-trait-return.rs:85:13 + | +LL | fn man() -> dyn std::fmt::Display { + | ^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time + | + = note: for information on trait objects, see <https://doc.rust-lang.org/book/ch17-02-trait-objects.html#using-trait-objects-that-allow-for-values-of-different-types> + = note: if all the returned values were of the same type you could use `impl std::fmt::Display` as the return type + = note: for information on `impl Trait`, see <https://doc.rust-lang.org/book/ch10-02-traits.html#returning-types-that-implement-traits> + = note: you can create a new `enum` with a variant for each returned type +help: return a boxed trait object instead + | +LL | fn man() -> Box<dyn std::fmt::Display> { + | ++++ + +help: ... and box this value + | +LL | Box::new(0i32) + | +++++++++ + +help: ... and box this value + | +LL | Box::new(1u32) + | +++++++++ + + +error: aborting due to 14 previous errors + +Some errors have detailed explanations: E0308, E0746. +For more information about an error, try `rustc --explain E0308`. |