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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/variance/variance-use-contravariant-struct-2.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/variance/variance-use-contravariant-struct-2.rs')
-rw-r--r-- | src/test/ui/variance/variance-use-contravariant-struct-2.rs | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/test/ui/variance/variance-use-contravariant-struct-2.rs b/src/test/ui/variance/variance-use-contravariant-struct-2.rs new file mode 100644 index 000000000..2113eb2ad --- /dev/null +++ b/src/test/ui/variance/variance-use-contravariant-struct-2.rs @@ -0,0 +1,17 @@ +// Test various uses of structs with distint variances to make sure +// they permit lifetimes to be approximated as expected. + +#![allow(dead_code)] +// build-pass (FIXME(62277): could be check-pass?) + +struct SomeStruct<T>(fn(T)); + +fn bar<'min,'max>(v: SomeStruct<&'min ()>) + -> SomeStruct<&'max ()> + where 'max : 'min +{ + v +} + + +fn main() { } |