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186 Commits

Author SHA1 Message Date
Ralf Jung
aa578de018 identify write locks by lvalues, not regions 
This makes a new compile-fail test pass.
 2017-09-13 14:37:31 +02:00
Ralf Jung
41f228824f fix warnings in tests; update validation whitelist 2017-09-09 11:18:02 +02:00
Oliver Schneider
dd5b0100f3
Merge remote-tracking branch 'origin/master' into memory 2017-08-28 16:13:09 +02:00
Oliver Schneider
02a0f0f814 Turn off validation for some compile-fail tests 2017-08-28 15:04:32 +02:00
Ralf Jung
907d2c7310 rustc #43457 got fixed, we can enable more tests 2017-08-27 18:18:32 +02:00
Ralf Jung
8539728607 memory: make sure we check non-NULL/undef even fore 0-sized accesses 2017-08-25 14:41:59 +02:00
Ralf Jung
2fccae8aac add another compile-fail test for validation 2017-08-18 11:30:18 +02:00
Ralf Jung
34685044f9 add a bunch of compile-fail tests for validation 2017-08-09 18:01:10 -07:00
Ralf Jung
668491a892 Work on making validation test pass again 
Turns out that tracking write locks by their lifetime is not precise enough,
but for now, we don't have an alternative.  Also, we need to force_allocate
what we acquire or else the memory will not be in the right state.
 2017-08-09 15:49:47 -07:00
Ralf Jung
11f0aedc3d add some tests making sure we get the alias checking right 2017-08-09 15:49:47 -07:00
Oliver Schneider
4ba2b82f31
Split the alloc id address space into functions and normal allocs 
instead of interleaving them as before.
The next step is to also separate out static memory into its own
address space.
 2017-08-08 17:09:25 +02:00
Ralf Jung
4957031e3c selectively disable validation in compile-fail where appropriate. cargo test now passes :) 2017-08-03 18:13:23 -07:00
Ralf Jung
58a17026c9 Let -Zmir-emit-validate also control whether miri even acts on the validation commands 2017-08-03 18:13:23 -07:00
Oliver Schneider
adfea61665
Allow machines to create new memory kinds 2017-08-01 09:56:21 +02:00
Ralf Jung
14cb85809b always test alignment in memory.rs 2017-07-20 13:24:06 -07:00
Eduard-Mihai Burtescu
e79bb42ab3 Merge pull request #262 from RalfJung/never 
remove ad-hoc 'never' type check in read_lvalue
 2017-07-20 15:13:21 +03:00
Ralf Jung
3b19c83c67 remove ad-hoc 'never' type check in read_lvalue 2017-07-19 20:32:51 -07:00
Ralf Jung
7648ccaae1 add test for misaligned pointer loads 2017-07-19 20:26:30 -07:00
Ralf Jung
72664e42aa No longer check aligment and non-NULLness on & 
This breaks creating unaligned raw pointers via `&packed.field as *const _`, which needs to be legal.
Also it doesn't seem like LLVM still relies on this, see
* https://github.com/solson/miri/issues/244#issuecomment-315563640
* https://internals.rust-lang.org/t/rules-for-alignment-and-non-nullness-of-references/5430/16

We probably want to handle this invariant like the others that validation is concerned with, and only
check it on function boundaries for now.
 2017-07-19 11:28:35 -07:00
Ralf Jung
ff9192e346 remove reundant dangling checks in {r,d}eallocate 2017-07-18 13:50:54 -07:00
Oliver Schneider
2e562a4d64
Fix static mutation tests 2017-07-14 17:39:19 +02:00
Oliver Schneider
7701ff2f89
Remove duplicate test 2017-07-14 17:39:19 +02:00
Oliver Schneider
192da8819f
Ensure that it is not possible to explicitly free stack memory 2017-07-14 17:36:06 +02:00
Ralf Jung
1fe310c8ba Memory::read_ptr has to check for relocations on the edges 2017-07-12 19:30:37 -07:00
Oliver Schneider
4a03e45169 Add tests for #113 
resolves #113
 2017-07-12 09:29:18 +02:00
Ralf Jung
9a9666e2a6 Add a test for using a too big alignment on reallocate 2017-07-11 10:28:32 -07:00
Ralf Jung
ea730ab20f update tests for new allocator API 2017-07-10 16:15:58 -07:00
Ralf Jung
3c0a6d6922 simplify reallocate 2017-07-10 13:34:54 -07:00
Oliver Schneider
b8bd42e8d4 Merge pull request #234 from RalfJung/reallocate 
Make Reallocate & Deallocate less permissive
 2017-07-05 19:54:54 +02:00
Oliver Schneider
10ec543b9e Merge pull request #235 from RalfJung/intrinsics 
Implement some missing intrinsics
 2017-07-04 08:38:22 +02:00
Ralf Jung
19d6ad74e5 add test for div-by-zero with the operator (rather than the intrinsic) 2017-07-03 20:59:47 -07:00
Ralf Jung
30f92f8a27 catch overflows that are hidden by first casting the RHS to u32 2017-07-03 20:50:19 -07:00
Ralf Jung
ffd482e2f5 check the assumptions made by the unchecked_ and copy_nonoverlapping intrinsics 2017-07-03 20:37:38 -07:00
Ralf Jung
440c4778fa validate size and alignment on reallocate and deallocate 2017-07-03 16:47:58 -07:00
Ralf Jung
bdcdb605a4 fix test on i686 2017-07-03 16:16:05 -07:00
Ralf Jung
dc9f5a205f properly check for: double-free, use-after-reallocate 2017-07-03 16:12:11 -07:00
Ralf Jung
030166757c Fix transmute on ByValPair 
Fixes #227
 2017-07-03 13:58:50 -07:00
Oliver Schneider
42d3edada7 Merge pull request #220 from oli-obk/undo_single_field_opt 
Remove the `field` field from `Lvalue::Local`
 2017-06-28 10:15:36 +02:00
David Renshaw
54821102b4 update tests for new error message 2017-06-27 21:31:38 -04:00
Oliver Schneider
5dfaacf310 Simplify all the code 2017-06-27 13:36:41 +02:00
Ralf Jung
4e90e3bcf6 remove redundant test 2017-06-24 11:05:13 -07:00
Ralf Jung
b1acc130bb check alignment of pointers on Ref 2017-06-24 11:05:13 -07:00
Ralf Jung
f0c8df2291 handle ptr-int casts explicitly in cast.rs 2017-06-24 11:05:13 -07:00
Ralf Jung
7b7f690274 Make sure that casting a ptr-integer down to u8 makes it unusable 2017-06-24 11:05:13 -07:00
Oliver Schneider
4aca1d0e0b Make zst compile-fail tests more readable 2017-06-24 12:46:35 +02:00
Oliver Schneider
377fcce9b8 Ensure tests run with and without full MIR 2017-06-23 16:41:56 +02:00
Oliver Schneider
9be3e9185b Remove the zst allocation 2017-06-23 12:55:49 +02:00
Ralf Jung
12935b6514 add some compile-fail tests 2017-06-22 14:46:53 -07:00
Ralf Jung
14cb31fb88 permit bit-anding in pointer values below the alignment 
This makes HashMap work!
 2017-06-22 14:46:53 -07:00
Ralf Jung
2f61356858 permit offsetting a NULL-ptr by 0, to fix hashmap test 2017-06-22 13:41:13 -07:00
Ralf Jung
6eafb10b87 add test for function pointer offsets 2017-06-21 21:54:42 -07:00
Oliver Schneider
a6cd7a2e08 Also move some compile-fail tests to fullmir-only 2017-06-21 15:07:40 +02:00
Oliver Schneider
fcf495821e
Get rid of the integer allocation 2017-06-20 14:28:18 +02:00
Ralf Jung
3e1596d8c9 Error out when "primitive MIR math" (as opposed to unchecked intrinsics) overflows 
Fixes #178
 2017-06-07 15:39:44 -07:00
Ralf Jung
36505c7b40 fix bitops being accidentally allowed on pointers from the same allocation 2017-06-05 17:17:16 -07:00
Ralf Jung
2a231d66fc check bounds when using offset intrinsic or MIR op 2017-06-05 14:27:26 -07:00
Ralf Jung
f39e015163 check for overflow when doing pointer arithmetic 2017-06-05 14:23:35 -07:00
Ralf Jung
1d0e622a81 test that we cannot observe the bytes representing a pointer 2017-06-05 14:23:35 -07:00
Ralf Jung
44a45f7c34 run test suite also against libstd with full MIR 2017-05-31 13:39:40 -07:00
Ralf Jung
1241938f97 test suite now also passes on MIR-libstd 
Also enable some tests that were disabled for no apparant reason.
(The comment in zst.rs was wrong, the test was disabled also for miri execution.)
Delete env_args test as the args can actually be queried with MIR-libstd (currently, they are always empty)
 2017-05-30 10:41:38 -07:00
Ralf Jung
99433a1ffd improve fn pointer signature check to allow some casts that should be permitted 
Also properly check the "non-capturing Fn to fn" case
 2017-05-30 10:41:38 -07:00
Ralf Jung
cd6e3e6431 If a "start" lang item incl. MIR is present, run that instead of running main directly 
This fixes the memory leaks when running a simple "Hello World" with MIR-libstd
 2017-05-30 10:41:38 -07:00
Oliver Schneider
257ac5803f Don't unconditionally mask bitshift rhs 2017-03-14 14:24:16 +01:00
Oliver Schneider
8405770b51 Rustup to rustc 1.17.0-nightly (be760566c 2017-02-28) 2017-03-02 13:11:33 +01:00
Oliver Schneider
38d16ccacc
add test with an Rc cycle to create a memleak 2017-02-24 10:41:15 +01:00
Oliver Schneider
5829483f4d
add a test for the memory leak error 2017-02-24 10:41:15 +01:00
Oliver Schneider
0f183dc866 we cannot panic, thus panicking always returns false 2017-02-09 15:07:50 +01:00
Oliver Schneider
fb2d393427 update tests 2017-02-09 10:59:42 +01:00
Oliver Schneider
98cda6cb07 freeze -> static 2017-02-07 20:28:54 +01:00
Oliver Schneider
148c6de507 fix some unaligned reads 2017-01-31 10:36:46 +01:00
Oliver Schneider
548a6baec0
also test transmutes to empty enums 2017-01-12 11:23:44 +01:00
Oliver Schneider
b5f824fd9c
fix ICE when transmuting inhabited types to uninhabited 2017-01-12 09:59:00 +01:00
Oliver Schneider
753dbcf158
add a test for dereferencing a pointer to a ! 2017-01-12 09:41:36 +01:00
Oliver Schneider
ae7d69a5bd
msvc has different internals for mutexes and thus fails on a different function 2017-01-12 08:41:57 +01:00
Scott Olson
42239e69bf Make layout SizeOverflow test trigger on i686. 2016-12-16 23:57:46 -08:00
Oliver Schneider
986b3a07c2
layout computation can fail, make it fail with a miri error 2016-11-18 10:38:07 +01:00
Oliver Schneider
26ccc1e4bc
add a step counter that can be changed during interpretation 2016-11-18 10:38:07 +01:00
Oliver Schneider
51ff9fdaf6
deallocate all locals on function exit and transitively freeze constants through pointers 2016-11-18 10:05:55 +01:00
Oliver Schneider
fd68670c0a
merge closures and function and implement some closure vtable cases 2016-11-15 17:19:37 +01:00
Oliver Schneider
14ff6411f0
make sure ByVal pointers act just like ByRef to a pointer 2016-11-15 14:12:49 +01:00
Oliver Schneider
511fa40d23
add test for int -> fn ptr cast 2016-11-15 14:11:00 +01:00
Oliver Schneider
8003c570d8
don't panic on pointer to value comparison in primvals 2016-11-04 15:49:14 +01:00
Oliver Schneider
2a35b3e322
call user defined drop impls 2016-11-03 17:32:37 +01:00
Scott Olson
6503148589 Optimize reads of field projections of ByValPairs. 
This helps in the case of field projections of the results of checked
binary operations. E.g.:

    _1 = CheckedAdd(const 1i32, const 2i32);
    assert(!(_1.1: bool), "attempt to add with overflow" -> bb1

Previously, the `_1.1` field projection lvalue would force_allocate `_1`
so it could read the memory in the old-style way. Now checked math with
its assertions will not allocate at all.

The oom2.rs compile-fail test had to be re-written, because the old
version of it no longer allocates _at all_ (yay!), so it would hit the
stack depth limit instead, from recursion.
 2016-10-16 19:58:22 -06:00
Scott Olson
b1094f6c1e Deallocate primval conversion hack allocs. 
It's a hack, sure, but it should learn some manners.
 2016-10-16 03:21:41 -06:00
Scott Olson
49e6c57ef9 Do not pre-allocate local variables. 
Thanks to the `Value` locals refactoring, now primitive locals (ints,
floats, chars, bools, and the like) will not require `Allocation`s at
all, and locals that are never initialized at all because of conditional
control flow won't be wasting memory.
 2016-10-15 23:31:42 -06:00
Scott Olson
6c463b7562 Hold an Lvalue for the return pointer in a frame. 
Previously ReturnPointer was just the first slot in the locals array,
which had type `Vec<Pointer>`. But after my recent refactoring, locals
is `Vec<Value>` and it became increasingly hacky to pull a pointer out
of the first slot to be the value. Besides, that hack wouldn't allow
ReturnPointer to ever be an `Lvalue::Local`, referring directly to a
local on a higher stack frame.

Now ReturnPointer has no presence in the locals array, instead being
upgraded to its own field on `Frame`.

This introduces a couple of new hacks, detailed by some of my FIXME
comments, so that I could get the tests passing again and commit. More
commits coming soon should clean up these hacks without much trouble,
and overall I feel that the code is converging on a cleaner, more
efficient design.
 2016-10-15 19:48:30 -06:00
Oliver Schneider
787feaad4b
allow tuple field indexing into anonymous tuples 2016-09-28 18:22:53 +02:00
Oliver Schneider
f4516e738b
be able to find statics in other crates 2016-09-27 17:02:04 +02:00
Oliver Schneider
38748fa615
refactor away IntegerPtr 2016-09-22 15:47:16 +02:00
Oliver Schneider
875a4542f9
remove the ZST allocation and abort all zero byte writes/reads 2016-09-22 15:22:00 +02:00
Scott Olson
c679c71def Freeze static memory of string constants. 2016-09-19 04:10:18 -06:00
Scott Olson
20ced4a720 Replace const_to_ptr with const_to_value. 
This reduces the number of allocations Miri makes drastically. The
`const_to_ptr` function was a lame hack that allocated for every since simple
constant, and all of those are avoided now, except for one extra allocation each
for string and bytestring literals which will be fixed in a followup commit.

There are a number of hacks such as `eval_operand_to_ptr` left over from this
commit, which will also be fixed in followup commits.
 2016-09-19 02:19:34 -06:00
Scott Olson
814efe3b05 option_eq test passes now since casts are implemented. 2016-09-19 02:16:51 -06:00
Scott Olson
2e70fcdca8 Undo accidental test deletion in previous commit. 2016-09-13 20:17:52 -06:00
Scott Olson
366c793306 Fix tests broken by std::vec::SetLenOnDrop. 2016-09-13 20:14:07 -06:00
Oliver Schneider
23eb8a5cf2
error on failed assumptions 2016-09-13 13:08:57 +02:00
Oliver Schneider
5c47e3dbd8
only allow the modification of static mut or statics with interior mutability 2016-09-11 11:02:45 +02:00
Oliver Schneider
ad053d66fe
change the block and stmt position after a function call returns 
previously we moved to the target block *before* calling a function, so when inspecting
the stack, it appeared as if we were in the first statement of the next block.
 2016-09-07 12:48:29 +02:00
Oliver Schneider
f5a89d297c
rustc now can use integer literals in attributes 2016-09-07 10:27:57 +02:00