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Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
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LLVM 3.7 added a PointeeType parameter to GetElementPtrInst::Create.
Let's handle that by a macro called KLEE_LLVM_GEP_TYPE, defined in
Version.h.
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
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reflect the fact that it simply returns a string
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version that takes an argument a stream
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This is too generic and llvm 6.0 defines DEBUG as follows:
#define DEBUG(X) DEBUG_WITH_TYPE(DEBUG_TYPE, X)
This then results in various build failures where once the macro is
defined, once it is not.
So rename this generic macro to KLEE_ARRAY_DEBUG.
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
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If an external function in KLEE is invoked, it might update errno.
Previously, the errno specific variable in a state was only updated
if it was part of the executed instructions.
That opened up a timeframe that increased the likelihood of errno being
overwritten by another method call.
This patch fixes two issues:
* the errno of the KLEE process state is updated before the external
function call allowing to detect changes to it later on
* after the external call, the memory object of errno is directly
updated
with its new value, reducing the likelihood to be overwritten by
another
call
Additional features:
* Add support for `errno()` for Darwin as well.
* Simplified errno handling in POSIX layer
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clang 5 reports:
In file included from ../lib/Core/MergeHandler.cpp:10:
../include/klee/MergeHandler.h:81:12: warning: private field 'closedStateCount' is not used [-Wunused-private-field]
unsigned closedStateCount;
^
So fix it by removing the member.
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
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the old build system (now removed).
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Added support for hiding command-line options
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Fixes klee/klee#717
delete on null pointer is always safe.
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location as a string. Also added const qualifier to the printFileLine functions
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Request LLVM 3.4 as minimal requirement for KLEE
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- having an explicit function which is defined for multiple llvm
versions separately increases readability.
- also: error handling was simplified
- Personal motivation: being able to use this functionality in unit tests
fixes #561
related to #656
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In LLVM 3.7, PassManager was moved to the legacy:: namespace. Introduce
a type for it and use it in the code.
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
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It became unnecessary when defining options and mainly undefined.
So introduce KLEE_LLVM_CL_VAL_END as suggested by @delcypher.
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
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Fixed typos in comments related to vararg support.
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MetaSMTSolver.cpp so that the backend headers only need to be included once there
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`klee_open_output_file()` function so that it can be used by
the Z3Solver.
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assignments against the corresponding `Query` object and check the
assignment evaluates correctly.
This can be switched on using `-debug-assignment-validating-solver`
on the command line.
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finding a bug with the `-exit-on-error` option enabled.
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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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Pass the list as reference. Otherwise we can get errors with newer LLVM
like:
lib/Basic/ConstructSolverChain.cpp:26:19: error: call to deleted constructor of 'llvm::cl::list<QueryLoggingSolverType>'
if (optionIsSet(queryLoggingOptions, SOLVER_KQUERY)) {
^~~~~~~~~~~~~~~~~~~
llvm/Support/CommandLine.h:1466:3: note: 'list' has been explicitly marked deleted here
list(const list &) = delete;
^
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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width greater than 64
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compiler warnings, one by adding an assert, and the other by refactoring the choose() function.
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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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and make it a pure virtual method. Also make it protected rather than
public because it is an implementation detail of `Expr::compare()`.
This means that sub classes must implement it so this commit also
provides implementations. The comparision behaves as before except
for `ConcatExpr` where its `width` attribute is now used (previously
it wasn't).
This commit also documents the semantics of `Expr::compareContents(const Expr&)`
which was clearly needed because it has been incorrectly implemented
in the past and has gone unnoticed for several years.
This partially addresses #515 .
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`compareContents()`.
This bug would not have affected correctness but it would have
affected performance because if `Expr::compare()` was called on
two structually equal `NotExpr` then its children would be
checked for structually equality twice - once in
NotExpr::compareContents()` and once in `Expr::compare()`.
This partially addresses #515 .
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This is done as a separate commit because it imports
third party code. It's under the Boost license though
so it "should be" fine.
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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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* 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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The previous change altered .ac files, regenerate the scripts.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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