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Newer versions of LLVM do not allow to implicitly cast iterators to
pointers where they point. So convert all such uses to explicit
static_cast, the same as LLVM code does.
Otherwise we see errors like:
lib/Core/Executor.cpp:548:15: error: no viable conversion from 'Module::iterator' (aka 'ilist_iterator<llvm::Function>') to 'llvm::Function *'
Function *f = i;
^ ~
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
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Teach KLEE to respect the requested memory alignment of allocated memory
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It was marked as deprecated long time ago and finally removed in LLVM
3.9. Remove all uses of getGlobalContext and create our own context.
Propagate it all over the code then.
[v2] use ctx, not C as name
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
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variables when possible.
Previously an alignment 8 was always used which did not faithfully
emulate what was either explicitly requested in the LLVM IR or what
the default alignment was for the target.
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New compilers warn about using 'register' as follows:
ConstantDivision.cpp:66:3: warning: 'register' storage class specifier is deprecated and incompatible with C++1z [-Wdeprecated-register]
Remove the register specifier -- the compilers are clever enough to know
what to do.
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
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controlled by a new parameter `moduleIsFullyLinked`. When
true the linkage type of a weak alias is ignored. It is legal to do
this when the module is fully linked because there won't be another
function that could override the weak alias.
This fixes a previous assertion failure in `klee::getDirectCallTarget()`
triggered by the `test/regression/2016-11-24-bitcast-weak-alias.c` test case.
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too strict limitations (LLVM >= 3.0)
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ReadExpr::create() was missing an opportunity to constant fold
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constant arrays.
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Modify scripts and a test to allow ASan/UBSan builds.
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compiler warnings, one by adding an assert, and the other by refactoring the choose() function.
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a…"
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too strict limitations
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When building with ASan the `mallinfo()` function is intercepted.
However the currently implementation is just a stub that always
returns 0. So instead use the public API of the sanitizer runtime
to get the amount of currently allocated memory when KLEE is built
with ASan.
Unfortunately it appears that the way to detect building with ASan
differs between Clang and GCC. There was also a sanitizer runtime
API change too.
This was tested with
* Clang 3.4, 3.5, and 3.9.0
* GCC 4.8, 4.9, 5.2, 5.4 and, 6.2.1.
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Replaced an incorrect comma with a semicolon in the Executor constructor.
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This was confusing because it would emit something like
`v1.0.0-290-g08d4716` because the 1.1.0 and 1.2.0 releases
didn't have a tag on the master branch so `git describe --tags`
would just find the `v1.0.0` tag and report based on that tag.
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* Making `Expr::compre(const Expr&, ExprEquivSet)` private and moving
its implementation into `Expr.cpp`.
* Document `Expr::compare(const Expr&)`.
This partially addresses #515 .
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Reported by @jirislaby in #507.
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This has shown that there is another circular dependency
(added by me! sigh...) between `kleeCore` and `kleeModule`.
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implement it in the solver.
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MartinNowack-fix_bfs2
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add nicer error messages for --use-merge and add explanation why it currently cannot be used with random-path
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transitive dependencies on KLEE's libraries rather than on the final
binaries. This is better because it means we can build
other tools that use KLEE's libraries and not need to express the
needed LLVM dependencies.
It also makes it clearer what the dependencies are between KLEE
libraries. This has illustrated a problem with the `kleeBasic`
library. It contains `ConstructSolverChain.cpp` which clearly
belongs in `kleaverSolver` not in `kleeBasic`. This will be fixed
later.
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For performance reasons, if KLEE branches, one state is reused
and it is progressed by adding new constraints.
Make sure both new states end up at the end of the BFS searcher queue.
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currently cannot be used with random-path
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This is based off intial work by @jirislaby in #481. However it
has been substantially modified.
Notably it includes a separate build sytem to build the runtimes which
is inspired by the old build system. The reason for doing this is
because CMake is not well suited for building the runtime:
* CMake is configured to use the host compiler, not the bitcode
compiler. These are not the same thing.
* Building the runtime using `add_custom_command()` is flawed
because we can't automatically get transitive depencies (i.e.
header file dependencies) unless the CMake generator is makefiles.
(See `IMPLICIT_DEPENDS` of `add_custom_command()` in CMake).
So for now we have a very simple build system for building the runtimes.
In the future we can replace this with something more sophisticated if
we need it.
Support for all features of the old build system are implemented apart
from recording the git revision and showing it in the output of
`klee --help`.
Another notable change is the CMake build system works much better with
LLVM installs which don't ship with testing tools. The build system
will download the sources for `FileCheck` and `not` tools if the
corresponding binaries aren't available and will build them. However
`lit` (availabe via `pip install lit`) and GTest must already be
installed.
Apart from better support for testing a significant advantage of the
new CMake build system compared to the existing "Autoconf/Makefile"
build system is that it is **not** coupled to LLVM's build system
(unlike the existing build system). This means that LLVM's
autoconf/Makefiles don't need to be installed somewhere on the system.
Currently all tests pass.
Support has been implemented in TravisCI and the Dockerfile for
building with CMake.
The existing "Autoconf/Makefile" build system has been left intact
and so both build systems can coexist for a short while. We should
remove the old build system as soon as possible though because it
creates an unnecessary maintance burden.
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runAndGetCexForked())
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`dirty` flag if we remove `llvm.trap` from the module.
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remove mimic_stp option and the associated ITE chain construction for variable shift operations
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* Add unittest to check that the `Assignment` class can evaluate
expressions containing a `NotOptimizedExpr`.
* Fix the `AssignmentTest.FoldNotOptimized` unit test by
teaching the `ExprEvaluator` to fold `NotOptimizedExpr` nodes.
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operators
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It is pain for build systems to see __DATE__ or __TIME__ in sources as
the build is not reproducible. So disable the timestamping by default
and add an option to enable it if somebody is really after it.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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klee_warning, and klee_error
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Extended support for assembler raising
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function) (#455)
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`-debug-crosscheck-core-solver` as requested by Cristian
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with another solver. For example the core solver can be STP and the
cross checking solver can be Z3.
Unfortunately a few fragile tests don't pass when actually using this
option.
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