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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/nll/enum-drop-access.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/nll/enum-drop-access.rs')
-rw-r--r-- | src/test/ui/nll/enum-drop-access.rs | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/src/test/ui/nll/enum-drop-access.rs b/src/test/ui/nll/enum-drop-access.rs new file mode 100644 index 000000000..5ef0c3fe7 --- /dev/null +++ b/src/test/ui/nll/enum-drop-access.rs @@ -0,0 +1,49 @@ +enum DropOption<T> { + Some(T), + None, +} + +impl<T> Drop for DropOption<T> { + fn drop(&mut self) {} +} + +// Dropping opt could access the value behind the reference, +fn drop_enum(opt: DropOption<&mut i32>) -> Option<&mut i32> { + match opt { + DropOption::Some(&mut ref mut r) => { //~ ERROR + Some(r) + }, + DropOption::None => None, + } +} + +fn optional_drop_enum(opt: Option<DropOption<&mut i32>>) -> Option<&mut i32> { + match opt { + Some(DropOption::Some(&mut ref mut r)) => { //~ ERROR + Some(r) + }, + Some(DropOption::None) | None => None, + } +} + +// Ok, dropping opt doesn't access the reference +fn optional_tuple(opt: Option<(&mut i32, String)>) -> Option<&mut i32> { + match opt { + Some((&mut ref mut r, _)) => { + Some(r) + }, + None => None, + } +} + +// Ok, dropping res doesn't access the Ok case. +fn different_variants(res: Result<&mut i32, String>) -> Option<&mut i32> { + match res { + Ok(&mut ref mut r) => { + Some(r) + }, + Err(_) => None, + } +} + +fn main() {} |