1 // Copyright 2016 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 #![feature(untagged_unions)]
13 use std::cell::{Cell, RefCell};
17 struct InjectedFailure;
20 data: RefCell<Vec<bool>>,
25 impl panic::UnwindSafe for Allocator {}
26 impl panic::RefUnwindSafe for Allocator {}
28 impl Drop for Allocator {
30 let data = self.data.borrow();
31 if data.iter().any(|d| *d) {
32 panic!("missing free: {:?}", data);
38 fn new(failing_op: usize) -> Self {
40 failing_op: failing_op,
41 cur_ops: Cell::new(0),
42 data: RefCell::new(vec![])
45 fn alloc(&self) -> Ptr {
46 self.cur_ops.set(self.cur_ops.get() + 1);
48 if self.cur_ops.get() == self.failing_op {
49 panic!(InjectedFailure);
52 let mut data = self.data.borrow_mut();
53 let addr = data.len();
59 struct Ptr<'a>(usize, &'a Allocator);
60 impl<'a> Drop for Ptr<'a> {
62 match self.1.data.borrow_mut()[self.0] {
64 panic!("double free at index {:?}", self.0)
66 ref mut d => *d = false
69 self.1.cur_ops.set(self.1.cur_ops.get()+1);
71 if self.1.cur_ops.get() == self.1.failing_op {
72 panic!(InjectedFailure);
77 fn dynamic_init(a: &Allocator, c: bool) {
84 fn dynamic_drop(a: &Allocator, c: bool) {
93 fn assignment2(a: &Allocator, c0: bool, c1: bool) {
94 let mut _v = a.alloc();
95 let mut _w = a.alloc();
105 fn assignment1(a: &Allocator, c0: bool) {
106 let mut _v = a.alloc();
107 let mut _w = a.alloc();
114 #[allow(unions_with_drop_fields)]
120 fn union1(a: &Allocator) {
122 let mut u = Boxy { a: a.alloc() };
128 fn run_test<F>(mut f: F)
129 where F: FnMut(&Allocator)
131 let first_alloc = Allocator::new(usize::MAX);
134 for failing_op in 1..first_alloc.cur_ops.get()+1 {
135 let alloc = Allocator::new(failing_op);
137 let f = panic::AssertUnwindSafe(&mut f);
138 let result = panic::catch_unwind(move || {
142 Ok(..) => panic!("test executed {} ops but now {}",
143 first_alloc.cur_ops.get(), alloc.cur_ops.get()),
145 if e.downcast_ref::<InjectedFailure>().is_none() {
146 panic::resume_unwind(e);
153 fn run_test_nopanic<F>(mut f: F)
154 where F: FnMut(&Allocator)
156 let first_alloc = Allocator::new(usize::MAX);
161 run_test(|a| dynamic_init(a, false));
162 run_test(|a| dynamic_init(a, true));
163 run_test(|a| dynamic_drop(a, false));
164 run_test(|a| dynamic_drop(a, true));
166 run_test(|a| assignment2(a, false, false));
167 run_test(|a| assignment2(a, false, true));
168 run_test(|a| assignment2(a, true, false));
169 run_test(|a| assignment2(a, true, true));
171 run_test(|a| assignment1(a, false));
172 run_test(|a| assignment1(a, true));
174 run_test_nopanic(|a| union1(a));