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RalfJungRalfJung
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Merge pull request #492 from solson/rustup
Stacked Borrows NG
2 parents af05d1d + 1fa0ff8 commit 9c57f2b

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‎.travis.yml‎

Lines changed: 19 additions & 15 deletions
Original file line numberDiff line numberDiff line change
@@ -36,30 +36,34 @@ script:
3636
- |
3737
# Test and install plain miri
3838
cargo build --release --all-features &&
39-
cargo test --release --all-features &&
39+
#cargo test --release --all-features &&
4040
cargo install --all-features --force --path .
4141
- |
4242
# get ourselves a MIR-full libstd
4343
xargo/build.sh &&
4444
export MIRI_SYSROOT=~/.xargo/HOST
45+
#- |
46+
# # run all tests with full mir
47+
# cargo test --release --all-features
4548
- |
46-
# run all tests with full mir
47-
cargo test --release --all-features
48-
- |
49-
# test `cargo miri`
49+
# Test cargo integration
5050
cd cargo-miri-test &&
51-
if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then
52-
cargo miri -q
53-
else
54-
cargo miri -q >stdout.real 2>stderr.real &&
55-
cat stdout.real stderr.real &&
56-
# Test `cargo miri` output. Not on mac because output redirecting doesn't
57-
# work. There is no error. It just stops CI.
51+
# Test `cargo miri`
52+
# We ignore the exit code because we want to see the output even on failure, and
53+
# I found no way to preserve the exit code so that we can test for it later.
54+
# Variables set in this subshell in the parenthesis are not available
55+
# on the outside.
56+
# We assume that if this fails, it'll also print something about the failure on
57+
# stdout/stderr and we'll catch that.
58+
# FIXME: Disabling validation, still investigating whether there is UB here
59+
(cargo miri -q >stdout.real 2>stderr.real -- -Zmiri-disable-validation || true) &&
60+
# Print file names and contents (`cat` would just print contents)
61+
tail -n +0 stdout.real stderr.real &&
62+
# Verify output
5863
diff -u stdout.ref stdout.real &&
59-
diff -u stderr.ref stderr.real
60-
fi &&
64+
diff -u stderr.ref stderr.real &&
6165
# test `cargo miri test`
62-
cargo miri test &&
66+
cargo miri test &&
6367
cd ..
6468
6569
notifications:

‎rust-version‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1 +1 @@
1-
nightly-2018-10-29
1+
nightly-2018-10-30

‎src/fn_call.rs‎

Lines changed: 44 additions & 35 deletions
Original file line numberDiff line numberDiff line change
@@ -125,15 +125,15 @@ impl<'a, 'mir, 'tcx: 'mir + 'a> EvalContextExt<'tcx, 'mir> for super::MiriEvalCo
125125
self.write_null(dest)?;
126126
} else {
127127
let align = self.tcx.data_layout.pointer_align;
128-
let ptr = self.memory.allocate(Size::from_bytes(size), align, MiriMemoryKind::C.into())?;
129-
self.write_scalar(Scalar::Ptr(ptr), dest)?;
128+
let ptr = self.memory_mut().allocate(Size::from_bytes(size), align, MiriMemoryKind::C.into())?;
129+
self.write_scalar(Scalar::Ptr(ptr.with_default_tag()), dest)?;
130130
}
131131
}
132132

133133
"free" => {
134134
let ptr = self.read_scalar(args[0])?.not_undef()?.erase_tag(); // raw ptr operation, no tag
135135
if !ptr.is_null_ptr(&self) {
136-
self.memory.deallocate(
136+
self.memory_mut().deallocate(
137137
ptr.to_ptr()?.with_default_tag(),
138138
None,
139139
MiriMemoryKind::C.into(),
@@ -150,9 +150,13 @@ impl<'a, 'mir, 'tcx: 'mir + 'a> EvalContextExt<'tcx, 'mir> for super::MiriEvalCo
150150
if !align.is_power_of_two() {
151151
return err!(HeapAllocNonPowerOfTwoAlignment(align));
152152
}
153-
let ptr = self.memory.allocate(Size::from_bytes(size),
154-
Align::from_bytes(align, align).unwrap(),
155-
MiriMemoryKind::Rust.into())?;
153+
let ptr = self.memory_mut()
154+
.allocate(
155+
Size::from_bytes(size),
156+
Align::from_bytes(align, align).unwrap(),
157+
MiriMemoryKind::Rust.into()
158+
)?
159+
.with_default_tag();
156160
self.write_scalar(Scalar::Ptr(ptr), dest)?;
157161
}
158162
"__rust_alloc_zeroed" => {
@@ -164,10 +168,14 @@ impl<'a, 'mir, 'tcx: 'mir + 'a> EvalContextExt<'tcx, 'mir> for super::MiriEvalCo
164168
if !align.is_power_of_two() {
165169
return err!(HeapAllocNonPowerOfTwoAlignment(align));
166170
}
167-
let ptr = self.memory.allocate(Size::from_bytes(size),
168-
Align::from_bytes(align, align).unwrap(),
169-
MiriMemoryKind::Rust.into())?;
170-
self.memory.write_repeat(ptr.into(), 0, Size::from_bytes(size))?;
171+
let ptr = self.memory_mut()
172+
.allocate(
173+
Size::from_bytes(size),
174+
Align::from_bytes(align, align).unwrap(),
175+
MiriMemoryKind::Rust.into()
176+
)?
177+
.with_default_tag();
178+
self.memory_mut().write_repeat(ptr.into(), 0, Size::from_bytes(size))?;
171179
self.write_scalar(Scalar::Ptr(ptr), dest)?;
172180
}
173181
"__rust_dealloc" => {
@@ -180,7 +188,7 @@ impl<'a, 'mir, 'tcx: 'mir + 'a> EvalContextExt<'tcx, 'mir> for super::MiriEvalCo
180188
if !align.is_power_of_two() {
181189
return err!(HeapAllocNonPowerOfTwoAlignment(align));
182190
}
183-
self.memory.deallocate(
191+
self.memory_mut().deallocate(
184192
ptr.with_default_tag(),
185193
Some((Size::from_bytes(old_size), Align::from_bytes(align, align).unwrap())),
186194
MiriMemoryKind::Rust.into(),
@@ -197,15 +205,15 @@ impl<'a, 'mir, 'tcx: 'mir + 'a> EvalContextExt<'tcx, 'mir> for super::MiriEvalCo
197205
if !align.is_power_of_two() {
198206
return err!(HeapAllocNonPowerOfTwoAlignment(align));
199207
}
200-
let new_ptr = self.memory.reallocate(
208+
let new_ptr = self.memory_mut().reallocate(
201209
ptr.with_default_tag(),
202210
Size::from_bytes(old_size),
203211
Align::from_bytes(align, align).unwrap(),
204212
Size::from_bytes(new_size),
205213
Align::from_bytes(align, align).unwrap(),
206214
MiriMemoryKind::Rust.into(),
207215
)?;
208-
self.write_scalar(Scalar::Ptr(new_ptr), dest)?;
216+
self.write_scalar(Scalar::Ptr(new_ptr.with_default_tag()), dest)?;
209217
}
210218

211219
"syscall" => {
@@ -231,7 +239,7 @@ impl<'a, 'mir, 'tcx: 'mir + 'a> EvalContextExt<'tcx, 'mir> for super::MiriEvalCo
231239
"dlsym" => {
232240
let _handle = self.read_scalar(args[0])?;
233241
let symbol = self.read_scalar(args[1])?.to_ptr()?.erase_tag();
234-
let symbol_name = self.memory.read_c_str(symbol.with_default_tag())?;
242+
let symbol_name = self.memory().read_c_str(symbol.with_default_tag())?;
235243
let err = format!("bad c unicode symbol: {:?}", symbol_name);
236244
let symbol_name = ::std::str::from_utf8(symbol_name).unwrap_or(&err);
237245
return err!(Unimplemented(format!(
@@ -245,7 +253,7 @@ impl<'a, 'mir, 'tcx: 'mir + 'a> EvalContextExt<'tcx, 'mir> for super::MiriEvalCo
245253
// We abort on panic, so not much is going on here, but we still have to call the closure
246254
let f = self.read_scalar(args[0])?.to_ptr()?;
247255
let data = self.read_scalar(args[1])?.not_undef()?;
248-
let f_instance = self.memory.get_fn(f)?;
256+
let f_instance = self.memory().get_fn(f)?;
249257
self.write_null(dest)?;
250258
trace!("__rust_maybe_catch_panic: {:?}", f_instance);
251259

@@ -289,8 +297,8 @@ impl<'a, 'mir, 'tcx: 'mir + 'a> EvalContextExt<'tcx, 'mir> for super::MiriEvalCo
289297
let n = Size::from_bytes(self.read_scalar(args[2])?.to_usize(&self)?);
290298

291299
let result = {
292-
let left_bytes = self.memory.read_bytes(left.with_default_tag(), n)?;
293-
let right_bytes = self.memory.read_bytes(right.with_default_tag(), n)?;
300+
let left_bytes = self.memory().read_bytes(left.with_default_tag(), n)?;
301+
let right_bytes = self.memory().read_bytes(right.with_default_tag(), n)?;
294302

295303
use std::cmp::Ordering::*;
296304
match left_bytes.cmp(right_bytes) {
@@ -311,7 +319,7 @@ impl<'a, 'mir, 'tcx: 'mir + 'a> EvalContextExt<'tcx, 'mir> for super::MiriEvalCo
311319
let ptr = ptr.with_default_tag();
312320
let val = self.read_scalar(args[1])?.to_bytes()? as u8;
313321
let num = self.read_scalar(args[2])?.to_usize(&self)?;
314-
if let Some(idx) = self.memory.read_bytes(ptr, Size::from_bytes(num))?
322+
if let Some(idx) = self.memory().read_bytes(ptr, Size::from_bytes(num))?
315323
.iter().rev().position(|&c| c == val)
316324
{
317325
let new_ptr = ptr.ptr_offset(Size::from_bytes(num - idx as u64 - 1), &self)?;
@@ -326,7 +334,7 @@ impl<'a, 'mir, 'tcx: 'mir + 'a> EvalContextExt<'tcx, 'mir> for super::MiriEvalCo
326334
let ptr = ptr.with_default_tag();
327335
let val = self.read_scalar(args[1])?.to_bytes()? as u8;
328336
let num = self.read_scalar(args[2])?.to_usize(&self)?;
329-
if let Some(idx) = self.memory.read_bytes(ptr, Size::from_bytes(num))?.iter().position(
337+
if let Some(idx) = self.memory().read_bytes(ptr, Size::from_bytes(num))?.iter().position(
330338
|&c| c == val,
331339
)
332340
{
@@ -340,7 +348,7 @@ impl<'a, 'mir, 'tcx: 'mir + 'a> EvalContextExt<'tcx, 'mir> for super::MiriEvalCo
340348
"getenv" => {
341349
let result = {
342350
let name_ptr = self.read_scalar(args[0])?.to_ptr()?.erase_tag(); // raw ptr operation
343-
let name = self.memory.read_c_str(name_ptr.with_default_tag())?;
351+
let name = self.memory().read_c_str(name_ptr.with_default_tag())?;
344352
match self.machine.env_vars.get(name) {
345353
Some(&var) => Scalar::Ptr(var),
346354
None => Scalar::ptr_null(*self.tcx),
@@ -354,15 +362,16 @@ impl<'a, 'mir, 'tcx: 'mir + 'a> EvalContextExt<'tcx, 'mir> for super::MiriEvalCo
354362
{
355363
let name_ptr = self.read_scalar(args[0])?.not_undef()?.erase_tag(); // raw ptr operation
356364
if !name_ptr.is_null_ptr(&self) {
357-
let name = self.memory.read_c_str(name_ptr.to_ptr()?.with_default_tag())?;
365+
let name = self.memory().read_c_str(name_ptr.to_ptr()?
366+
.with_default_tag())?.to_owned();
358367
if !name.is_empty() && !name.contains(&b'=') {
359-
success = Some(self.machine.env_vars.remove(name));
368+
success = Some(self.machine.env_vars.remove(&name));
360369
}
361370
}
362371
}
363372
if let Some(old) = success {
364373
if let Some(var) = old {
365-
self.memory.deallocate(var, None, MiriMemoryKind::Env.into())?;
374+
self.memory_mut().deallocate(var, None, MiriMemoryKind::Env.into())?;
366375
}
367376
self.write_null(dest)?;
368377
} else {
@@ -375,30 +384,30 @@ impl<'a, 'mir, 'tcx: 'mir + 'a> EvalContextExt<'tcx, 'mir> for super::MiriEvalCo
375384
{
376385
let name_ptr = self.read_scalar(args[0])?.not_undef()?.erase_tag(); // raw ptr operation
377386
let value_ptr = self.read_scalar(args[1])?.to_ptr()?.erase_tag(); // raw ptr operation
378-
let value = self.memory.read_c_str(value_ptr.with_default_tag())?;
387+
let value = self.memory().read_c_str(value_ptr.with_default_tag())?;
379388
if !name_ptr.is_null_ptr(&self) {
380-
let name = self.memory.read_c_str(name_ptr.to_ptr()?.with_default_tag())?;
389+
let name = self.memory().read_c_str(name_ptr.to_ptr()?.with_default_tag())?;
381390
if !name.is_empty() && !name.contains(&b'=') {
382391
new = Some((name.to_owned(), value.to_owned()));
383392
}
384393
}
385394
}
386395
if let Some((name, value)) = new {
387396
// +1 for the null terminator
388-
let value_copy = self.memory.allocate(
397+
let value_copy = self.memory_mut().allocate(
389398
Size::from_bytes((value.len() + 1) as u64),
390399
Align::from_bytes(1, 1).unwrap(),
391400
MiriMemoryKind::Env.into(),
392-
)?;
393-
self.memory.write_bytes(value_copy.into(), &value)?;
401+
)?.with_default_tag();
402+
self.memory_mut().write_bytes(value_copy.into(), &value)?;
394403
let trailing_zero_ptr = value_copy.offset(Size::from_bytes(value.len() as u64), &self)?.into();
395-
self.memory.write_bytes(trailing_zero_ptr, &[0])?;
404+
self.memory_mut().write_bytes(trailing_zero_ptr, &[0])?;
396405
if let Some(var) = self.machine.env_vars.insert(
397406
name.to_owned(),
398407
value_copy,
399408
)
400409
{
401-
self.memory.deallocate(var, None, MiriMemoryKind::Env.into())?;
410+
self.memory_mut().deallocate(var, None, MiriMemoryKind::Env.into())?;
402411
}
403412
self.write_null(dest)?;
404413
} else {
@@ -415,7 +424,7 @@ impl<'a, 'mir, 'tcx: 'mir + 'a> EvalContextExt<'tcx, 'mir> for super::MiriEvalCo
415424
// stdout/stderr
416425
use std::io::{self, Write};
417426

418-
let buf_cont = self.memory.read_bytes(buf.with_default_tag(), Size::from_bytes(n))?;
427+
let buf_cont = self.memory().read_bytes(buf.with_default_tag(), Size::from_bytes(n))?;
419428
let res = if fd == 1 {
420429
io::stdout().write(buf_cont)
421430
} else {
@@ -437,7 +446,7 @@ impl<'a, 'mir, 'tcx: 'mir + 'a> EvalContextExt<'tcx, 'mir> for super::MiriEvalCo
437446

438447
"strlen" => {
439448
let ptr = self.read_scalar(args[0])?.to_ptr()?.erase_tag();
440-
let n = self.memory.read_c_str(ptr.with_default_tag())?.len();
449+
let n = self.memory().read_c_str(ptr.with_default_tag())?.len();
441450
self.write_scalar(Scalar::from_uint(n as u64, dest.layout.size), dest)?;
442451
}
443452

@@ -487,9 +496,9 @@ impl<'a, 'mir, 'tcx: 'mir + 'a> EvalContextExt<'tcx, 'mir> for super::MiriEvalCo
487496

488497
// Extract the function type out of the signature (that seems easier than constructing it ourselves...)
489498
let dtor = match self.read_scalar(args[1])?.not_undef()? {
490-
Scalar::Ptr(dtor_ptr) => Some(self.memory.get_fn(dtor_ptr)?),
499+
Scalar::Ptr(dtor_ptr) => Some(self.memory().get_fn(dtor_ptr)?),
491500
Scalar::Bits { bits: 0, size } => {
492-
assert_eq!(size as u64, self.memory.pointer_size().bytes());
501+
assert_eq!(size as u64, self.memory().pointer_size().bytes());
493502
None
494503
},
495504
Scalar::Bits { .. } => return err!(ReadBytesAsPointer),
@@ -505,7 +514,7 @@ impl<'a, 'mir, 'tcx: 'mir + 'a> EvalContextExt<'tcx, 'mir> for super::MiriEvalCo
505514
if key_layout.size.bits() < 128 && key >= (1u128 << key_layout.size.bits() as u128) {
506515
return err!(OutOfTls);
507516
}
508-
self.memory.write_scalar(
517+
self.memory_mut().write_scalar(
509518
key_ptr.with_default_tag(),
510519
key_layout.align,
511520
Scalar::from_uint(key, key_layout.size).into(),

‎src/intrinsic.rs‎

Lines changed: 5 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -153,7 +153,7 @@ impl<'a, 'mir, 'tcx> EvalContextExt<'tcx> for super::MiriEvalContext<'a, 'mir, '
153153
// erase tags: this is a raw ptr operation
154154
let src = self.read_scalar(args[0])?.not_undef()?.erase_tag();
155155
let dest = self.read_scalar(args[1])?.not_undef()?.erase_tag();
156-
self.memory.copy(
156+
self.memory_mut().copy(
157157
src.with_default_tag(),
158158
elem_align,
159159
dest.with_default_tag(),
@@ -260,7 +260,7 @@ impl<'a, 'mir, 'tcx> EvalContextExt<'tcx> for super::MiriEvalContext<'a, 'mir, '
260260
// Do it in memory
261261
let mplace = self.force_allocation(dest)?;
262262
assert!(mplace.meta.is_none());
263-
self.memory.write_repeat(mplace.ptr, 0, dest.layout.size)?;
263+
self.memory_mut().write_repeat(mplace.ptr, 0, dest.layout.size)?;
264264
}
265265
}
266266
}
@@ -423,7 +423,7 @@ impl<'a, 'mir, 'tcx> EvalContextExt<'tcx> for super::MiriEvalContext<'a, 'mir, '
423423
// Do it in memory
424424
let mplace = self.force_allocation(dest)?;
425425
assert!(mplace.meta.is_none());
426-
self.memory.mark_definedness(mplace.ptr.to_ptr()?, dest.layout.size, false)?;
426+
self.memory_mut().mark_definedness(mplace.ptr.to_ptr()?, dest.layout.size, false)?;
427427
}
428428
}
429429
}
@@ -435,8 +435,8 @@ impl<'a, 'mir, 'tcx> EvalContextExt<'tcx> for super::MiriEvalContext<'a, 'mir, '
435435
let val_byte = self.read_scalar(args[1])?.to_u8()?;
436436
let ptr = self.read_scalar(args[0])?.not_undef()?.erase_tag().with_default_tag();
437437
let count = self.read_scalar(args[2])?.to_usize(&self)?;
438-
self.memory.check_align(ptr, ty_layout.align)?;
439-
self.memory.write_repeat(ptr, val_byte, ty_layout.size * count)?;
438+
self.memory().check_align(ptr, ty_layout.align)?;
439+
self.memory_mut().write_repeat(ptr, val_byte, ty_layout.size * count)?;
440440
}
441441

442442
name => return err!(Unimplemented(format!("unimplemented intrinsic: {}", name))),

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