diff options
Diffstat (limited to 'src/test/ui/union/union-with-drop-fields.rs')
-rw-r--r-- | src/test/ui/union/union-with-drop-fields.rs | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/test/ui/union/union-with-drop-fields.rs b/src/test/ui/union/union-with-drop-fields.rs new file mode 100644 index 000000000..a7a8b69e7 --- /dev/null +++ b/src/test/ui/union/union-with-drop-fields.rs @@ -0,0 +1,31 @@ +// revisions: mirunsafeck thirunsafeck +// [thirunsafeck]compile-flags: -Z thir-unsafeck + +#![allow(dead_code)] + +union U { + a: u8, // OK +} + +union W { + a: String, //~ ERROR unions cannot contain fields that may need dropping + b: String, // OK, only one field is reported +} + +struct S(String); + +// `S` doesn't implement `Drop` trait, but still has non-trivial destructor +union Y { + a: S, //~ ERROR unions cannot contain fields that may need dropping +} + +// We don't know if `T` is trivially-destructable or not until trans +union J<T> { + a: T, //~ ERROR unions cannot contain fields that may need dropping +} + +union H<T: Copy> { + a: T, // OK, `T` is `Copy`, no destructor +} + +fn main() {} |