3 // Ensures that destructors are run for expressions of the form "let _ = e;"
4 // where `e` is a type which requires a destructor.
8 struct Bar { x: isize }
10 enum FooBar { _Foo(Foo), _Bar(usize) }
12 static mut NUM_DROPS
: usize = 0;
16 unsafe { NUM_DROPS += 1; }
21 unsafe { NUM_DROPS += 1; }
26 unsafe { NUM_DROPS += 1; }
29 impl Drop
for FooBar
{
31 unsafe { NUM_DROPS += 1; }
36 assert_eq
!(unsafe { NUM_DROPS }
, 0);
38 assert_eq
!(unsafe { NUM_DROPS }
, 1);
39 { let _x = Bar { x: 21 }
; }
40 assert_eq
!(unsafe { NUM_DROPS }
, 2);
42 assert_eq
!(unsafe { NUM_DROPS }
, 3);
43 { let _x = FooBar::_Foo(Foo); }
44 assert_eq
!(unsafe { NUM_DROPS }
, 5);
45 { let _x = FooBar::_Bar(42); }
46 assert_eq
!(unsafe { NUM_DROPS }
, 6);
49 assert_eq
!(unsafe { NUM_DROPS }
, 7);
50 { let _ = Bar { x: 21 }
; }
51 assert_eq
!(unsafe { NUM_DROPS }
, 8);
53 assert_eq
!(unsafe { NUM_DROPS }
, 9);
54 { let _ = FooBar::_Foo(Foo); }
55 assert_eq
!(unsafe { NUM_DROPS }
, 11);
56 { let _ = FooBar::_Bar(42); }
57 assert_eq
!(unsafe { NUM_DROPS }
, 12);