diff --git a/src/test/run-pass/issue-17734.rs b/src/test/run-pass/issue-17734.rs new file mode 100644 index 0000000000000..f68ab01ea9b54 --- /dev/null +++ b/src/test/run-pass/issue-17734.rs @@ -0,0 +1,23 @@ +// Copyright 2014 The Rust Project Developers. See the COPYRIGHT +// file at the top-level directory of this distribution and at +// http://rust-lang.org/COPYRIGHT. +// +// Licensed under the Apache License, Version 2.0 or the MIT license +// , at your +// option. This file may not be copied, modified, or distributed +// except according to those terms. + +// Test that generating drop glue for Box doesn't ICE + +fn f(s: Box) -> Box { + s +} + +fn main() { + // There is currently no safe way to construct a `Box`, so improvise + let box_arr: Box<[u8]> = box ['h' as u8, 'e' as u8, 'l' as u8, 'l' as u8, 'o' as u8]; + let box_str: Box = unsafe { std::mem::transmute(box_arr) }; + assert_eq!(box_str.as_slice(), "hello"); + f(box_str); +}