2018-08-30 12:18:55 +00:00
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// run-pass
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2019-10-18 21:47:54 +00:00
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// ignore-wasm32-bare compiled with panic=abort by default
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2017-10-23 03:01:00 +00:00
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2018-02-24 19:21:33 +00:00
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#![feature(generators, generator_trait, untagged_unions)]
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2019-12-30 00:23:42 +00:00
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#![allow(unused_assignments)]
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#![allow(unused_variables)]
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2016-05-29 19:01:06 +00:00
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use std::cell::{Cell, RefCell};
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2019-07-03 10:35:02 +00:00
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use std::mem::ManuallyDrop;
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2017-10-17 12:20:22 +00:00
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use std::ops::Generator;
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2016-05-29 19:01:06 +00:00
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use std::panic;
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2018-10-04 18:49:38 +00:00
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use std::pin::Pin;
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2016-05-29 19:01:06 +00:00
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use std::usize;
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struct InjectedFailure;
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2016-05-16 23:26:18 +00:00
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struct Allocator {
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data: RefCell<Vec<bool>>,
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2016-05-29 19:01:06 +00:00
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failing_op: usize,
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cur_ops: Cell<usize>,
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2016-05-16 23:26:18 +00:00
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}
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2016-05-29 19:01:06 +00:00
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impl panic::UnwindSafe for Allocator {}
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impl panic::RefUnwindSafe for Allocator {}
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2016-05-16 23:26:18 +00:00
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impl Drop for Allocator {
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fn drop(&mut self) {
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let data = self.data.borrow();
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if data.iter().any(|d| *d) {
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2019-10-09 19:06:15 +00:00
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panic!("missing free: {:?}", data);
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2016-05-16 23:26:18 +00:00
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}
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}
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}
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impl Allocator {
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2019-10-09 19:06:15 +00:00
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fn new(failing_op: usize) -> Self {
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2016-05-29 19:01:06 +00:00
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Allocator {
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failing_op: failing_op,
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cur_ops: Cell::new(0),
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2019-10-09 19:06:15 +00:00
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data: RefCell::new(vec![])
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2016-05-29 19:01:06 +00:00
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}
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}
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2019-05-11 10:16:26 +00:00
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fn alloc(&self) -> Ptr<'_> {
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2016-05-29 19:01:06 +00:00
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self.cur_ops.set(self.cur_ops.get() + 1);
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if self.cur_ops.get() == self.failing_op {
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panic!(InjectedFailure);
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}
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2016-05-16 23:26:18 +00:00
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let mut data = self.data.borrow_mut();
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let addr = data.len();
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data.push(true);
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Ptr(addr, self)
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}
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2019-10-09 19:06:15 +00:00
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// FIXME(#47949) Any use of this indicates a bug in rustc: we should never
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// be leaking values in the cases here.
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//
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// Creates a `Ptr<'_>` and checks that the allocated value is leaked if the
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// `failing_op` is in the list of exception.
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fn alloc_leaked(&self, exceptions: Vec<usize>) -> Ptr<'_> {
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let ptr = self.alloc();
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if exceptions.iter().any(|operation| *operation == self.failing_op) {
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let mut data = self.data.borrow_mut();
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data[ptr.0] = false;
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}
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ptr
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}
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2016-05-16 23:26:18 +00:00
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}
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struct Ptr<'a>(usize, &'a Allocator);
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impl<'a> Drop for Ptr<'a> {
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fn drop(&mut self) {
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match self.1.data.borrow_mut()[self.0] {
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false => {
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2019-10-09 19:06:15 +00:00
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panic!("double free at index {:?}", self.0)
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2016-05-16 23:26:18 +00:00
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}
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ref mut d => *d = false
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}
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2016-05-29 19:01:06 +00:00
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self.1.cur_ops.set(self.1.cur_ops.get()+1);
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if self.1.cur_ops.get() == self.1.failing_op {
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panic!(InjectedFailure);
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}
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2016-05-16 23:26:18 +00:00
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}
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}
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fn dynamic_init(a: &Allocator, c: bool) {
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let _x;
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if c {
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_x = Some(a.alloc());
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}
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}
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2016-05-29 19:01:06 +00:00
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fn dynamic_drop(a: &Allocator, c: bool) {
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2016-05-16 23:26:18 +00:00
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let x = a.alloc();
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if c {
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Some(x)
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} else {
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None
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2016-05-29 19:01:06 +00:00
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};
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2016-05-16 23:26:18 +00:00
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}
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2017-05-15 12:22:59 +00:00
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struct TwoPtrs<'a>(Ptr<'a>, Ptr<'a>);
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fn struct_dynamic_drop(a: &Allocator, c0: bool, c1: bool, c: bool) {
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for i in 0..2 {
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let x;
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let y;
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if (c0 && i == 0) || (c1 && i == 1) {
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x = (a.alloc(), a.alloc(), a.alloc());
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y = TwoPtrs(a.alloc(), a.alloc());
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if c {
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drop(x.1);
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drop(y.0);
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}
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}
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}
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}
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2017-06-27 15:34:07 +00:00
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fn field_assignment(a: &Allocator, c0: bool) {
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let mut x = (TwoPtrs(a.alloc(), a.alloc()), a.alloc());
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x.1 = a.alloc();
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x.1 = a.alloc();
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let f = (x.0).0;
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if c0 {
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(x.0).0 = f;
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}
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}
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2016-05-16 23:26:18 +00:00
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fn assignment2(a: &Allocator, c0: bool, c1: bool) {
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let mut _v = a.alloc();
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let mut _w = a.alloc();
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if c0 {
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drop(_v);
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}
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_v = _w;
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if c1 {
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_w = a.alloc();
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}
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}
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fn assignment1(a: &Allocator, c0: bool) {
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let mut _v = a.alloc();
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let mut _w = a.alloc();
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if c0 {
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drop(_v);
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}
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_v = _w;
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}
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2016-09-08 17:12:53 +00:00
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union Boxy<T> {
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2019-07-03 10:35:02 +00:00
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a: ManuallyDrop<T>,
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b: ManuallyDrop<T>,
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2016-09-08 17:12:53 +00:00
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}
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fn union1(a: &Allocator) {
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unsafe {
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2019-07-03 10:35:02 +00:00
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let mut u = Boxy { a: ManuallyDrop::new(a.alloc()) };
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*u.b = a.alloc(); // drops first alloc
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drop(ManuallyDrop::into_inner(u.a));
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2016-09-08 17:12:53 +00:00
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}
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}
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2017-05-10 22:02:52 +00:00
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fn array_simple(a: &Allocator) {
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let _x = [a.alloc(), a.alloc(), a.alloc(), a.alloc()];
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}
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fn vec_simple(a: &Allocator) {
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let _x = vec![a.alloc(), a.alloc(), a.alloc(), a.alloc()];
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}
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2017-10-17 12:20:22 +00:00
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fn generator(a: &Allocator, run_count: usize) {
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assert!(run_count < 4);
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let mut gen = || {
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(a.alloc(),
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yield a.alloc(),
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a.alloc(),
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yield a.alloc()
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);
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};
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for _ in 0..run_count {
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2018-10-04 18:49:38 +00:00
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Pin::new(&mut gen).resume();
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2017-10-17 12:20:22 +00:00
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}
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}
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2017-10-17 18:37:18 +00:00
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fn mixed_drop_and_nondrop(a: &Allocator) {
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// check that destructor panics handle drop
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// and non-drop blocks in the same scope correctly.
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//
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// Surprisingly enough, this used to not work.
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let (x, y, z);
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x = a.alloc();
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y = 5;
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z = a.alloc();
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}
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2017-08-09 19:23:27 +00:00
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#[allow(unreachable_code)]
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fn vec_unreachable(a: &Allocator) {
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let _x = vec![a.alloc(), a.alloc(), a.alloc(), return];
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}
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2017-11-28 12:48:23 +00:00
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fn slice_pattern_first(a: &Allocator) {
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let[_x, ..] = [a.alloc(), a.alloc(), a.alloc()];
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}
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fn slice_pattern_middle(a: &Allocator) {
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let[_, _x, _] = [a.alloc(), a.alloc(), a.alloc()];
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}
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fn slice_pattern_two(a: &Allocator) {
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let[_x, _, _y, _] = [a.alloc(), a.alloc(), a.alloc(), a.alloc()];
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}
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fn slice_pattern_last(a: &Allocator) {
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let[.., _y] = [a.alloc(), a.alloc(), a.alloc(), a.alloc()];
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}
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fn slice_pattern_one_of(a: &Allocator, i: usize) {
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let array = [a.alloc(), a.alloc(), a.alloc(), a.alloc()];
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let _x = match i {
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0 => { let [a, ..] = array; a }
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1 => { let [_, a, ..] = array; a }
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2 => { let [_, _, a, _] = array; a }
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3 => { let [_, _, _, a] = array; a }
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_ => panic!("unmatched"),
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};
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}
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2018-01-31 20:34:13 +00:00
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fn subslice_pattern_from_end(a: &Allocator, arg: bool) {
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let a = [a.alloc(), a.alloc(), a.alloc()];
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if arg {
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let[.., _x, _] = a;
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} else {
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2019-07-07 23:47:46 +00:00
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let[_, _y @ ..] = a;
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2018-01-31 20:34:13 +00:00
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}
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}
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fn subslice_pattern_from_end_with_drop(a: &Allocator, arg: bool, arg2: bool) {
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let a = [a.alloc(), a.alloc(), a.alloc(), a.alloc(), a.alloc()];
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if arg2 {
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drop(a);
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return;
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}
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if arg {
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let[.., _x, _] = a;
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} else {
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2019-07-07 23:47:46 +00:00
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let[_, _y @ ..] = a;
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2018-01-31 20:34:13 +00:00
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}
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}
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fn slice_pattern_reassign(a: &Allocator) {
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let mut ar = [a.alloc(), a.alloc()];
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let[_, _x] = ar;
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ar = [a.alloc(), a.alloc()];
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let[.., _y] = ar;
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}
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fn subslice_pattern_reassign(a: &Allocator) {
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let mut ar = [a.alloc(), a.alloc(), a.alloc()];
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let[_, _, _x] = ar;
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ar = [a.alloc(), a.alloc(), a.alloc()];
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2019-07-07 23:47:46 +00:00
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let[_, _y @ ..] = ar;
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2018-01-31 20:34:13 +00:00
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}
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2019-11-22 23:15:11 +00:00
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fn index_field_mixed_ends(a: &Allocator) {
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let ar = [(a.alloc(), a.alloc()), (a.alloc(), a.alloc())];
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let[(_x, _), ..] = ar;
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let[(_, _y), _] = ar;
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let[_, (_, _w)] = ar;
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let[.., (_z, _)] = ar;
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}
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fn subslice_mixed_min_lengths(a: &Allocator, c: i32) {
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let ar = [(a.alloc(), a.alloc()), (a.alloc(), a.alloc())];
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match c {
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0 => { let[_x, ..] = ar; }
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1 => { let[_x, _, ..] = ar; }
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2 => { let[_x, _] = ar; }
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3 => { let[(_x, _), _, ..] = ar; }
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4 => { let[.., (_x, _)] = ar; }
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5 => { let[.., (_x, _), _] = ar; }
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6 => { let [_y @ ..] = ar; }
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_ => { let [_y @ .., _] = ar; }
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}
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}
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2019-05-11 10:16:26 +00:00
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fn panic_after_return(a: &Allocator) -> Ptr<'_> {
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2019-10-09 19:06:15 +00:00
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// Panic in the drop of `p` or `q` can leak
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let exceptions = vec![8, 9];
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2019-05-11 10:16:26 +00:00
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a.alloc();
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let p = a.alloc();
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{
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a.alloc();
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let p = a.alloc();
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2019-10-09 19:06:15 +00:00
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// FIXME (#47949) We leak values when we panic in a destructor after
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// evaluating an expression with `rustc_mir::build::Builder::into`.
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a.alloc_leaked(exceptions)
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2019-05-11 10:16:26 +00:00
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}
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}
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fn panic_after_return_expr(a: &Allocator) -> Ptr<'_> {
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2019-10-09 19:06:15 +00:00
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// Panic in the drop of `p` or `q` can leak
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let exceptions = vec![8, 9];
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2019-05-11 10:16:26 +00:00
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a.alloc();
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let p = a.alloc();
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{
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a.alloc();
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let q = a.alloc();
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2019-10-09 19:06:15 +00:00
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// FIXME (#47949)
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return a.alloc_leaked(exceptions);
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2019-05-11 10:16:26 +00:00
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}
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}
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fn panic_after_init(a: &Allocator) {
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2019-10-09 19:06:15 +00:00
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// Panic in the drop of `r` can leak
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let exceptions = vec![8];
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2019-05-11 10:16:26 +00:00
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a.alloc();
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let p = a.alloc();
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let q = {
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a.alloc();
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let r = a.alloc();
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2019-10-09 19:06:15 +00:00
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// FIXME (#47949)
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a.alloc_leaked(exceptions)
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2019-05-11 10:16:26 +00:00
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};
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}
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fn panic_after_init_temp(a: &Allocator) {
|
2019-10-09 19:06:15 +00:00
|
|
|
// Panic in the drop of `r` can leak
|
|
|
|
let exceptions = vec![8];
|
2019-05-11 10:16:26 +00:00
|
|
|
a.alloc();
|
|
|
|
let p = a.alloc();
|
|
|
|
{
|
|
|
|
a.alloc();
|
|
|
|
let r = a.alloc();
|
2019-10-09 19:06:15 +00:00
|
|
|
// FIXME (#47949)
|
|
|
|
a.alloc_leaked(exceptions)
|
2019-05-11 10:16:26 +00:00
|
|
|
};
|
|
|
|
}
|
|
|
|
|
|
|
|
fn panic_after_init_by_loop(a: &Allocator) {
|
2019-10-09 19:06:15 +00:00
|
|
|
// Panic in the drop of `r` can leak
|
|
|
|
let exceptions = vec![8];
|
2019-05-11 10:16:26 +00:00
|
|
|
a.alloc();
|
|
|
|
let p = a.alloc();
|
|
|
|
let q = loop {
|
|
|
|
a.alloc();
|
|
|
|
let r = a.alloc();
|
2019-10-09 19:06:15 +00:00
|
|
|
// FIXME (#47949)
|
|
|
|
break a.alloc_leaked(exceptions);
|
2019-05-11 10:16:26 +00:00
|
|
|
};
|
|
|
|
}
|
|
|
|
|
2019-10-09 19:06:15 +00:00
|
|
|
fn run_test<F>(mut f: F)
|
2016-05-29 19:01:06 +00:00
|
|
|
where F: FnMut(&Allocator)
|
|
|
|
{
|
2019-10-09 19:06:15 +00:00
|
|
|
let first_alloc = Allocator::new(usize::MAX);
|
2016-05-29 19:01:06 +00:00
|
|
|
f(&first_alloc);
|
|
|
|
|
|
|
|
for failing_op in 1..first_alloc.cur_ops.get()+1 {
|
2019-10-09 19:06:15 +00:00
|
|
|
let alloc = Allocator::new(failing_op);
|
2016-05-29 19:01:06 +00:00
|
|
|
let alloc = &alloc;
|
|
|
|
let f = panic::AssertUnwindSafe(&mut f);
|
|
|
|
let result = panic::catch_unwind(move || {
|
|
|
|
f.0(alloc);
|
|
|
|
});
|
|
|
|
match result {
|
|
|
|
Ok(..) => panic!("test executed {} ops but now {}",
|
|
|
|
first_alloc.cur_ops.get(), alloc.cur_ops.get()),
|
|
|
|
Err(e) => {
|
|
|
|
if e.downcast_ref::<InjectedFailure>().is_none() {
|
|
|
|
panic::resume_unwind(e);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
2016-05-16 23:26:18 +00:00
|
|
|
|
2019-10-09 19:06:15 +00:00
|
|
|
fn run_test_nopanic<F>(mut f: F)
|
2016-09-08 17:12:53 +00:00
|
|
|
where F: FnMut(&Allocator)
|
|
|
|
{
|
2019-10-09 19:06:15 +00:00
|
|
|
let first_alloc = Allocator::new(usize::MAX);
|
2016-09-08 17:12:53 +00:00
|
|
|
f(&first_alloc);
|
|
|
|
}
|
|
|
|
|
2016-05-16 23:26:18 +00:00
|
|
|
fn main() {
|
2019-10-09 19:06:15 +00:00
|
|
|
run_test(|a| dynamic_init(a, false));
|
|
|
|
run_test(|a| dynamic_init(a, true));
|
|
|
|
run_test(|a| dynamic_drop(a, false));
|
|
|
|
run_test(|a| dynamic_drop(a, true));
|
|
|
|
|
|
|
|
run_test(|a| assignment2(a, false, false));
|
|
|
|
run_test(|a| assignment2(a, false, true));
|
|
|
|
run_test(|a| assignment2(a, true, false));
|
|
|
|
run_test(|a| assignment2(a, true, true));
|
|
|
|
|
|
|
|
run_test(|a| assignment1(a, false));
|
|
|
|
run_test(|a| assignment1(a, true));
|
|
|
|
|
|
|
|
run_test(|a| array_simple(a));
|
|
|
|
run_test(|a| vec_simple(a));
|
|
|
|
run_test(|a| vec_unreachable(a));
|
|
|
|
|
|
|
|
run_test(|a| struct_dynamic_drop(a, false, false, false));
|
|
|
|
run_test(|a| struct_dynamic_drop(a, false, false, true));
|
|
|
|
run_test(|a| struct_dynamic_drop(a, false, true, false));
|
|
|
|
run_test(|a| struct_dynamic_drop(a, false, true, true));
|
|
|
|
run_test(|a| struct_dynamic_drop(a, true, false, false));
|
|
|
|
run_test(|a| struct_dynamic_drop(a, true, false, true));
|
|
|
|
run_test(|a| struct_dynamic_drop(a, true, true, false));
|
|
|
|
run_test(|a| struct_dynamic_drop(a, true, true, true));
|
|
|
|
|
|
|
|
run_test(|a| field_assignment(a, false));
|
|
|
|
run_test(|a| field_assignment(a, true));
|
|
|
|
|
|
|
|
run_test(|a| generator(a, 0));
|
|
|
|
run_test(|a| generator(a, 1));
|
|
|
|
run_test(|a| generator(a, 2));
|
|
|
|
run_test(|a| generator(a, 3));
|
|
|
|
|
|
|
|
run_test(|a| mixed_drop_and_nondrop(a));
|
|
|
|
|
|
|
|
run_test(|a| slice_pattern_first(a));
|
|
|
|
run_test(|a| slice_pattern_middle(a));
|
|
|
|
run_test(|a| slice_pattern_two(a));
|
|
|
|
run_test(|a| slice_pattern_last(a));
|
|
|
|
run_test(|a| slice_pattern_one_of(a, 0));
|
|
|
|
run_test(|a| slice_pattern_one_of(a, 1));
|
|
|
|
run_test(|a| slice_pattern_one_of(a, 2));
|
|
|
|
run_test(|a| slice_pattern_one_of(a, 3));
|
|
|
|
|
|
|
|
run_test(|a| subslice_pattern_from_end(a, true));
|
|
|
|
run_test(|a| subslice_pattern_from_end(a, false));
|
|
|
|
run_test(|a| subslice_pattern_from_end_with_drop(a, true, true));
|
|
|
|
run_test(|a| subslice_pattern_from_end_with_drop(a, true, false));
|
|
|
|
run_test(|a| subslice_pattern_from_end_with_drop(a, false, true));
|
|
|
|
run_test(|a| subslice_pattern_from_end_with_drop(a, false, false));
|
|
|
|
run_test(|a| slice_pattern_reassign(a));
|
|
|
|
run_test(|a| subslice_pattern_reassign(a));
|
|
|
|
|
2019-11-22 23:15:11 +00:00
|
|
|
run_test(|a| index_field_mixed_ends(a));
|
|
|
|
run_test(|a| subslice_mixed_min_lengths(a, 0));
|
|
|
|
run_test(|a| subslice_mixed_min_lengths(a, 1));
|
|
|
|
run_test(|a| subslice_mixed_min_lengths(a, 2));
|
|
|
|
run_test(|a| subslice_mixed_min_lengths(a, 3));
|
|
|
|
run_test(|a| subslice_mixed_min_lengths(a, 4));
|
|
|
|
run_test(|a| subslice_mixed_min_lengths(a, 5));
|
|
|
|
run_test(|a| subslice_mixed_min_lengths(a, 6));
|
|
|
|
run_test(|a| subslice_mixed_min_lengths(a, 7));
|
|
|
|
|
2019-10-09 19:06:15 +00:00
|
|
|
run_test(|a| {
|
2019-05-11 10:16:26 +00:00
|
|
|
panic_after_return(a);
|
|
|
|
});
|
2019-10-09 19:06:15 +00:00
|
|
|
run_test(|a| {
|
2019-05-11 10:16:26 +00:00
|
|
|
panic_after_return_expr(a);
|
|
|
|
});
|
2019-10-09 19:06:15 +00:00
|
|
|
run_test(|a| panic_after_init(a));
|
|
|
|
run_test(|a| panic_after_init_temp(a));
|
|
|
|
run_test(|a| panic_after_init_by_loop(a));
|
|
|
|
|
|
|
|
run_test_nopanic(|a| union1(a));
|
2016-05-16 23:26:18 +00:00
|
|
|
}
|