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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/packed-struct/packed-struct-generic-transmute.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/packed-struct/packed-struct-generic-transmute.rs')
-rw-r--r-- | src/test/ui/packed-struct/packed-struct-generic-transmute.rs | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/src/test/ui/packed-struct/packed-struct-generic-transmute.rs b/src/test/ui/packed-struct/packed-struct-generic-transmute.rs new file mode 100644 index 000000000..c6264b6d2 --- /dev/null +++ b/src/test/ui/packed-struct/packed-struct-generic-transmute.rs @@ -0,0 +1,27 @@ +// This assumes the packed and non-packed structs are different sizes. + +// the error points to the start of the file, not the line with the +// transmute + +// error-pattern: cannot transmute between types of different sizes, or dependently-sized types + +use std::mem; + +#[repr(packed)] +struct Foo<T,S> { + bar: T, + baz: S +} + +struct Oof<T, S> { + rab: T, + zab: S +} + +fn main() { + let foo = Foo { bar: [1u8, 2, 3, 4, 5], baz: 10i32 }; + unsafe { + let oof: Oof<[u8; 5], i32> = mem::transmute(foo); + println!("{:?} {:?}", &oof.rab[..], oof.zab); + } +} |