diff options
Diffstat (limited to 'tests/ui/packed-struct/packed-struct-generic-transmute.rs')
-rw-r--r-- | tests/ui/packed-struct/packed-struct-generic-transmute.rs | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/tests/ui/packed-struct/packed-struct-generic-transmute.rs b/tests/ui/packed-struct/packed-struct-generic-transmute.rs new file mode 100644 index 000000000..c6264b6d2 --- /dev/null +++ b/tests/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); + } +} |