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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/object-lifetime/object-lifetime-default-from-box-error.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/object-lifetime/object-lifetime-default-from-box-error.rs')
-rw-r--r-- | src/test/ui/object-lifetime/object-lifetime-default-from-box-error.rs | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/src/test/ui/object-lifetime/object-lifetime-default-from-box-error.rs b/src/test/ui/object-lifetime/object-lifetime-default-from-box-error.rs new file mode 100644 index 000000000..f9b3e2238 --- /dev/null +++ b/src/test/ui/object-lifetime/object-lifetime-default-from-box-error.rs @@ -0,0 +1,37 @@ +// Test various cases where the defaults should lead to errors being +// reported. + +#![allow(dead_code)] + +trait SomeTrait { + fn dummy(&self) { } +} + +struct SomeStruct<'a> { + r: Box<dyn SomeTrait+'a> +} + +fn load(ss: &mut SomeStruct) -> Box<dyn SomeTrait> { + // `Box<SomeTrait>` defaults to a `'static` bound, so this return + // is illegal. + + ss.r + //~^ ERROR lifetime may not live long enough + //~| ERROR cannot move out of +} + +fn store(ss: &mut SomeStruct, b: Box<dyn SomeTrait>) { + // No error: b is bounded by 'static which outlives the + // (anonymous) lifetime on the struct. + + ss.r = b; +} + +fn store1<'b>(ss: &mut SomeStruct, b: Box<dyn SomeTrait+'b>) { + // Here we override the lifetimes explicitly, and so naturally we get an error. + + ss.r = b; //~ ERROR explicit lifetime required in the type of `ss` [E0621] +} + +fn main() { +} |