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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 /src/test/ui/suggestions/impl-on-dyn-trait-with-implicit-static-bound-needing-more-suggestions.rs | |
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 'src/test/ui/suggestions/impl-on-dyn-trait-with-implicit-static-bound-needing-more-suggestions.rs')
-rw-r--r-- | src/test/ui/suggestions/impl-on-dyn-trait-with-implicit-static-bound-needing-more-suggestions.rs | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/src/test/ui/suggestions/impl-on-dyn-trait-with-implicit-static-bound-needing-more-suggestions.rs b/src/test/ui/suggestions/impl-on-dyn-trait-with-implicit-static-bound-needing-more-suggestions.rs new file mode 100644 index 000000000..711cbbd38 --- /dev/null +++ b/src/test/ui/suggestions/impl-on-dyn-trait-with-implicit-static-bound-needing-more-suggestions.rs @@ -0,0 +1,113 @@ +// FIXME: the following cases need to suggest more things to make users reach a working end state. + +mod bav { + trait OtherTrait<'a> {} + impl<'a> OtherTrait<'a> for &'a () {} + + trait ObjectTrait { + type Assoc: Bar; + } + trait MyTrait { + fn use_self(&self) -> &() { panic!() } + } + trait Bar {} + + impl MyTrait for Box<dyn ObjectTrait<Assoc = i32>> { + fn use_self(&self) -> &() { panic!() } + } + impl Bar for i32 {} + + fn use_it<'a>(val: Box<dyn ObjectTrait<Assoc = i32>>) -> impl OtherTrait<'a> { + val.use_self() //~ ERROR cannot return reference to function parameter + } +} + +mod bap { + trait OtherTrait<'a> {} + impl<'a> OtherTrait<'a> for &'a () {} + + trait ObjectTrait { + type Assoc: Bar; + } + trait MyTrait { + fn use_self(&self) -> &() { panic!() } + } + trait Bar {} + + impl MyTrait for Box<dyn ObjectTrait<Assoc = i32>> { + fn use_self(&self) -> &() { panic!() } + } + impl Bar for i32 {} + + fn use_it<'a>(val: Box<dyn ObjectTrait<Assoc = i32>>) -> impl OtherTrait<'a> + 'a { + val.use_self() //~ ERROR E0515 + } +} + +// This case in particular requires the user to write all of the bounds we have in `mod bax`. +mod bay { + trait OtherTrait<'a> {} + impl<'a> OtherTrait<'a> for &'a () {} + + trait ObjectTrait { + type Assoc: Bar; + } + trait MyTrait { + fn use_self(&self) -> &() { panic!() } + } + trait Bar {} + + impl MyTrait for Box<dyn ObjectTrait<Assoc = i32>> { + fn use_self(&self) -> &() { panic!() } + } + impl Bar for i32 {} + + fn use_it<'a>(val: Box<dyn ObjectTrait<Assoc = i32> + 'a>) -> &'a () { + val.use_self() + } +} + +mod bax { + trait OtherTrait<'a> {} + impl<'a> OtherTrait<'a> for &'a () {} + + trait ObjectTrait { + type Assoc: Bar; + } + trait MyTrait<'a> { + fn use_self(&'a self) -> &'a () { panic!() } + } + trait Bar {} + + impl<'a> MyTrait<'a> for Box<dyn ObjectTrait<Assoc = i32> + 'a> { + fn use_self(&'a self) -> &'a () { panic!() } + } + impl Bar for i32 {} + + fn use_it<'a>(val: Box<dyn ObjectTrait<Assoc = i32> + 'a>) -> &'a () { + val.use_self() + } +} + +mod baw { + trait OtherTrait<'a> {} + impl<'a> OtherTrait<'a> for &'a () {} + + trait ObjectTrait { + type Assoc: Bar; + } + trait MyTrait { + fn use_self(&self) -> &() { panic!() } + } + trait Bar {} + + impl<'a> MyTrait for Box<dyn ObjectTrait<Assoc = Box<dyn Bar>>> { + fn use_self(&self) -> &() { panic!() } + } + + fn use_it<'a>(val: Box<dyn ObjectTrait<Assoc = Box<dyn Bar>>>) -> impl OtherTrait<'a> + 'a{ + val.use_self() //~ ERROR E0515 + } +} + +fn main() {} |