broken.ll

; Function Attrs: uwtable
define internal void @_ZN4main19h69285bc34c708271at4v0.0E({ i64, %tydesc*, i8*, i8*, i8 }*) unnamed_addr #4 {
"function top level":
  %_a = alloca %struct.Thing
  %1 = alloca [0 x i64*]
  %__adjust = alloca { i64**, i64 }
  %2 = alloca { i8*, i32 }
  %3 = getelementptr inbounds %struct.Thing* %_a, i32 0, i32 0
  %4 = getelementptr inbounds [0 x i64*]* %1, i32 0, i32 0
  %5 = getelementptr inbounds [0 x i64*]* %1, i32 0, i32 0
  %6 = getelementptr inbounds { i64**, i64 }* %__adjust, i32 0, i32 0
  store i64** %5, i64*** %6
  %7 = getelementptr inbounds { i64**, i64 }* %__adjust, i32 0, i32 1
  store i64 0, i64* %7
  %8 = bitcast { i64**, i64 }* %__adjust to i8*
  %9 = bitcast { i64**, i64 }* %3 to i8*
  call void @llvm.memcpy.p0i8.p0i8.i64(i8* %9, i8* %8, i64 16, i32 8, i1 false)
  %10 = getelementptr inbounds %struct.Thing* %_a, i32 0, i32 1
  %11 = invoke i8* @_ZN2rt11global_heap15exchange_malloc19h61212acde683c476aF4v0.0E({ i64, %tydesc*, i8*, i8*, i8 }* undef, i64 8)
          to label %"normal return" unwind label %unwind

"normal return":                                  ; preds = %"function top level"
  %12 = bitcast i8* %11 to i64*
  store i64 32, i64* %12
  store i64* %12, i64** %10
  call void @"_ZN13Thing$LT$$GT$9glue_drop19hb4d5764a91a55499ahE"({}* null, %struct.Thing* %_a)
  call void @"_ZN30_$x5b$UP$int$C$$x20..$x200$x5d9glue_drop18hce0e9422dafef8aa3E"({}* null, [0 x i64*]* %1)
  ret void

unwind:                                           ; preds = %"function top level"
  %13 = landingpad { i8*, i32 } personality i32 ()* @upcall_rust_personality
          cleanup
  call void @upcall_reset_stack_limit()
  store { i8*, i32 } %13, { i8*, i32 }* %2
  br label %cleanup

cleanup:                                          ; preds = %unwind
  call void @"_ZN30_$x5b$UP$int$C$$x20..$x200$x5d9glue_drop18hce0e9422dafef8aa3E"({}* null, { i64**, i64 }* %3)
  call void @"_ZN30_$x5b$UP$int$C$$x20..$x200$x5d9glue_drop18hce0e9422dafef8aa3E"({}* null, [0 x i64*]* %1)
  %14 = load { i8*, i32 }* %2
  resume { i8*, i32 } %14
}

broken.rs

struct Thing<'self> {
    baz: &'self [~int],
    bar: ~u64,
}

fn main() {
    let _a = Thing {
        baz: [],
        bar: ~32
    };

}