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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/traits/with-dst.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 '')
-rw-r--r-- | src/test/ui/traits/with-dst.rs | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/test/ui/traits/with-dst.rs b/src/test/ui/traits/with-dst.rs new file mode 100644 index 000000000..a3e3b31df --- /dev/null +++ b/src/test/ui/traits/with-dst.rs @@ -0,0 +1,22 @@ +// build-pass (FIXME(62277): could be check-pass?) +// #55266 + +struct VTable<DST: ?Sized> { + _to_dst_ptr: fn(*mut ()) -> *mut DST, +} + +trait HasVTableFor<DST: ?Sized + 'static> { + const VTABLE: &'static VTable<DST>; +} + +impl<T, DST: ?Sized + 'static> HasVTableFor<DST> for T { + const VTABLE: &'static VTable<DST> = &VTable { + _to_dst_ptr: |_: *mut ()| unsafe { std::mem::zeroed() }, + }; +} + +pub fn push<DST: ?Sized + 'static, T>() { + <T as HasVTableFor<DST>>::VTABLE; +} + +fn main() {} |