diff options
Diffstat (limited to 'tests/wrapper_forgets.rs')
| -rw-r--r-- | tests/wrapper_forgets.rs | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/tests/wrapper_forgets.rs b/tests/wrapper_forgets.rs new file mode 100644 index 0000000..da3404f --- /dev/null +++ b/tests/wrapper_forgets.rs @@ -0,0 +1,13 @@ +use bytemuck::TransparentWrapper;
+
+#[repr(transparent)]
+struct Wrap(Box<u32>);
+
+// SAFETY: it's #[repr(transparent)]
+unsafe impl TransparentWrapper<Box<u32>> for Wrap {}
+
+fn main() {
+ let value = Box::new(5);
+ // This used to duplicate the wrapped value, creating a double free :(
+ Wrap::wrap(value);
+}
|