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authorAlbert Larsan <74931857+albertlarsan68@users.noreply.github.com>2023-01-05 09:13:28 +0100
committerAlbert Larsan <74931857+albertlarsan68@users.noreply.github.com>2023-01-11 09:32:08 +0000
commitcf2dff2b1e3fa55fa5415d524200070d0d7aacfe (patch)
tree40a88d9a46aaf3e8870676eb2538378b75a263eb /src/test/ui/packed/packed-struct-optimized-enum.rs
parentca855e6e42787ecd062d81d53336fe6788ef51a9 (diff)
downloadrust-cf2dff2b1e3fa55fa5415d524200070d0d7aacfe.tar.gz
rust-cf2dff2b1e3fa55fa5415d524200070d0d7aacfe.zip
Move /src/test to /tests
Diffstat (limited to 'src/test/ui/packed/packed-struct-optimized-enum.rs')
-rw-r--r--src/test/ui/packed/packed-struct-optimized-enum.rs36
1 files changed, 0 insertions, 36 deletions
diff --git a/src/test/ui/packed/packed-struct-optimized-enum.rs b/src/test/ui/packed/packed-struct-optimized-enum.rs
deleted file mode 100644
index 5e1a1f518c5..00000000000
--- a/src/test/ui/packed/packed-struct-optimized-enum.rs
+++ /dev/null
@@ -1,36 +0,0 @@
-// run-pass
-#[repr(packed)]
-struct Packed<T: Copy>(#[allow(unused_tuple_struct_fields)] T);
-
-impl<T: Copy> Copy for Packed<T> {}
-impl<T: Copy> Clone for Packed<T> {
-    fn clone(&self) -> Self { *self }
-}
-
-fn sanity_check_size<T: Copy>(one: T) {
-    let two = [one, one];
-    let stride = (&two[1] as *const _ as usize) - (&two[0] as *const _ as usize);
-    let (size, align) = (std::mem::size_of::<T>(), std::mem::align_of::<T>());
-    assert_eq!(stride, size);
-    assert_eq!(size % align, 0);
-}
-
-fn main() {
-    // This can fail if rustc and LLVM disagree on the size of a type.
-    // In this case, `Option<Packed<(&(), u32)>>` was erroneously not
-    // marked as packed despite needing alignment `1` and containing
-    // its `&()` discriminant, which has alignment larger than `1`.
-    sanity_check_size((Some(Packed((&(), 0))), true));
-
-    // In #46769, `Option<(Packed<&()>, bool)>` was found to have
-    // pointer alignment, without actually being aligned in size.
-    // e.g., on 64-bit platforms, it had alignment `8` but size `9`.
-    type PackedRefAndBool<'a> = (Packed<&'a ()>, bool);
-    sanity_check_size::<Option<PackedRefAndBool>>(Some((Packed(&()), true)));
-
-    // Make sure we don't pay for the enum optimization in size,
-    // e.g., we shouldn't need extra padding after the packed data.
-    assert_eq!(std::mem::align_of::<Option<PackedRefAndBool>>(), 1);
-    assert_eq!(std::mem::size_of::<Option<PackedRefAndBool>>(),
-               std::mem::size_of::<PackedRefAndBool>());
-}