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// MIR for `test` before ElaborateDrops
fn test() -> Option<Box<u32>> {
let mut _0: std::option::Option<std::boxed::Box<u32>>;
let mut _1: std::boxed::Box<u32>;
let mut _2: usize;
let mut _3: usize;
let mut _4: *mut u8;
let mut _5: std::boxed::Box<u32>;
let mut _6: std::ops::ControlFlow<std::option::Option<std::convert::Infallible>, u32>;
let mut _7: std::option::Option<u32>;
let mut _8: isize;
let _9: std::option::Option<std::convert::Infallible>;
let mut _10: !;
let mut _11: std::option::Option<std::convert::Infallible>;
let _12: u32;
scope 1 {
}
scope 2 {
debug residual => _9;
scope 3 {
}
}
scope 4 {
debug val => _12;
scope 5 {
}
}
bb0: {
StorageLive(_1);
_2 = SizeOf(u32);
_3 = AlignOf(u32);
_4 = alloc::alloc::exchange_malloc(move _2, move _3) -> [return: bb1, unwind: bb13];
}
bb1: {
StorageLive(_5);
_5 = ShallowInitBox(move _4, u32);
StorageLive(_6);
StorageLive(_7);
_7 = Option::<u32>::None;
_6 = <Option<u32> as Try>::branch(move _7) -> [return: bb2, unwind: bb12];
}
bb2: {
StorageDead(_7);
_8 = discriminant(_6);
switchInt(move _8) -> [0: bb3, 1: bb5, otherwise: bb4];
}
bb3: {
StorageLive(_12);
_12 = ((_6 as Continue).0: u32);
(*_5) = _12;
StorageDead(_12);
_1 = move _5;
drop(_5) -> [return: bb7, unwind: bb11];
}
bb4: {
unreachable;
}
bb5: {
StorageLive(_9);
_9 = ((_6 as Break).0: std::option::Option<std::convert::Infallible>);
StorageLive(_11);
_11 = _9;
_0 = <Option<Box<u32>> as FromResidual<Option<Infallible>>>::from_residual(move _11) -> [return: bb6, unwind: bb12];
}
bb6: {
StorageDead(_11);
StorageDead(_9);
drop(_5) -> [return: bb9, unwind: bb13];
}
bb7: {
StorageDead(_5);
_0 = Option::<Box<u32>>::Some(move _1);
drop(_1) -> [return: bb8, unwind: bb13];
}
bb8: {
StorageDead(_1);
StorageDead(_6);
goto -> bb10;
}
bb9: {
StorageDead(_5);
StorageDead(_1);
StorageDead(_6);
goto -> bb10;
}
bb10: {
return;
}
bb11 (cleanup): {
drop(_1) -> [return: bb13, unwind terminate(cleanup)];
}
bb12 (cleanup): {
drop(_5) -> [return: bb13, unwind terminate(cleanup)];
}
bb13 (cleanup): {
resume;
}
}
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