From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:02:58 +0200 Subject: Adding upstream version 1.64.0+dfsg1. Signed-off-by: Daniel Baumann --- .../ui/array-slice-vec/box-of-array-of-drop-2.rs | 53 ++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 src/test/ui/array-slice-vec/box-of-array-of-drop-2.rs (limited to 'src/test/ui/array-slice-vec/box-of-array-of-drop-2.rs') diff --git a/src/test/ui/array-slice-vec/box-of-array-of-drop-2.rs b/src/test/ui/array-slice-vec/box-of-array-of-drop-2.rs new file mode 100644 index 000000000..c0ca45875 --- /dev/null +++ b/src/test/ui/array-slice-vec/box-of-array-of-drop-2.rs @@ -0,0 +1,53 @@ +// run-pass +// needs-unwind +#![allow(overflowing_literals)] + +// Test that we cleanup dynamic sized Box<[D]> properly when D has a +// destructor. + +// ignore-emscripten no threads support + +use std::thread; +use std::sync::atomic::{AtomicUsize, Ordering}; + +static LOG: AtomicUsize = AtomicUsize::new(0); + +struct D(u8); + +impl Drop for D { + fn drop(&mut self) { + println!("Dropping {}", self.0); + let old = LOG.load(Ordering::SeqCst); + let _ = LOG.compare_exchange( + old, + old << 4 | self.0 as usize, + Ordering::SeqCst, + Ordering::SeqCst + ); + } +} + +fn main() { + fn die() -> D { panic!("Oh no"); } + let g = thread::spawn(|| { + let _b1: Box<[D; 4]> = Box::new([D( 1), D( 2), D( 3), D( 4)]); + let _b2: Box<[D; 4]> = Box::new([D( 5), D( 6), D( 7), D( 8)]); + let _b3: Box<[D; 4]> = Box::new([D( 9), D(10), die(), D(12)]); + let _b4: Box<[D; 4]> = Box::new([D(13), D(14), D(15), D(16)]); + }); + assert!(g.join().is_err()); + + // When the panic occurs, we will be in the midst of constructing + // the input to `_b3`. Therefore, we drop the elements of the + // partially filled array first, before we get around to dropping + // the elements of `_b1` and _b2`. + + // Issue 23222: The order in which the elements actually get + // dropped is a little funky. See similar notes in nested-vec-3; + // in essence, I would not be surprised if we change the ordering + // given in `expect` in the future. + + let expect = 0x__A_9__5_6_7_8__1_2_3_4; + let actual = LOG.load(Ordering::SeqCst); + assert!(actual == expect, "expect: 0x{:x} actual: 0x{:x}", expect, actual); +} -- cgit v1.2.3