diff options
Diffstat (limited to 'tests/ui/issues/issue-23261.rs')
-rw-r--r-- | tests/ui/issues/issue-23261.rs | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/tests/ui/issues/issue-23261.rs b/tests/ui/issues/issue-23261.rs new file mode 100644 index 000000000..e21f86351 --- /dev/null +++ b/tests/ui/issues/issue-23261.rs @@ -0,0 +1,61 @@ +// run-pass +// Matching on a DST struct should not trigger an LLVM assertion. + +struct Foo<T: ?Sized> { + a: i32, + inner: T +} + +trait Get { + fn get(&self) -> i32; +} + +impl Get for i32 { + fn get(&self) -> i32 { + *self + } +} + +fn check_val(val: &Foo<[u8]>) { + match *val { + Foo { a, .. } => { + assert_eq!(a, 32); + } + } +} + +fn check_dst_val(val: &Foo<[u8]>) { + match *val { + Foo { ref inner, .. } => { + assert_eq!(inner, [1, 2, 3]); + } + } +} + +fn check_both(val: &Foo<[u8]>) { + match *val { + Foo { a, ref inner } => { + assert_eq!(a, 32); + assert_eq!(inner, [1, 2, 3]); + } + } +} + +fn check_trait_obj(val: &Foo<dyn Get>) { + match *val { + Foo { a, ref inner } => { + assert_eq!(a, 32); + assert_eq!(inner.get(), 32); + } + } +} + +fn main() { + let foo: &Foo<[u8]> = &Foo { a: 32, inner: [1, 2, 3] }; + check_val(foo); + check_dst_val(foo); + check_both(foo); + + let foo: &Foo<dyn Get> = &Foo { a: 32, inner: 32 }; + check_trait_obj(foo); +} |