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2012-02-18Teach analyzer that blocks with no captures are globals. Fixes ↵Ted Kremenek
<rdar://problem/10348049>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150896 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-28Really remove FlatStoreManager and BasicStoreManager, this time from the ↵Ted Kremenek
driver. Also remove associated tests. Sorry for the messy commits; this is the result of a botched Git merge. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@136422 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-28[analyzer] Overhaul how the static analyzer expects CFGs by forcing CFGs to ↵Ted Kremenek
be linearized only when used by the static analyzer. This required a rewrite of LiveVariables, and exposed a ton of subtle bugs. The motivation of this large change is to drastically simplify the logic in ExprEngine going forward. Some fallout is that the output of some BugReporterVisitors is not as accurate as before; those will need to be fixed over time. There is also some possible performance regression as RemoveDeadBindings will be called frequently; this can also be improved over time. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@136419 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-28[analyzer] Remove '-analyzer-check-objc-mem' flag, the nominee for best ↵Argyrios Kyrtzidis
misnomer award. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126676 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-28[analyzer] Migrate BuiltinFunctionChecker to CheckerV2.Argyrios Kyrtzidis
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126611 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-25Update test cases.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126523 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-15[analyzer] Use the new registration mechanism on some of the internal ↵Argyrios Kyrtzidis
checks. These are: StackAddrLeakChecker ObjCAtSyncChecker UnixAPIChecker MacOSXAPIChecker The rest have/create implicit dependencies between checkers and need to be handled differently. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125559 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-17Tweak stack address checker to report multiple cases where globals may ↵Ted Kremenek
reference stack memory. Also refactor the diagnostics so that we print out the kind of stack memory returned. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106210 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-05Rename -cc1 option '-checker-cfref' to '-analyzer-check-objc-mem'.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95348 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-09Fix broken diagnostic when returning the address of a stack-allocated array.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@93071 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-15Update tests to use %clang_cc1 instead of 'clang-cc' or 'clang -cc1'.Daniel Dunbar
- This is designed to make it obvious that %clang_cc1 is a "test variable" which is substituted. It is '%clang_cc1' instead of '%clang -cc1' because it can be useful to redefine what gets run as 'clang -cc1' (for example, to set a default target). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91446 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-14Replace clang-cc with clang -cc1.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91272 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-26Improve diagnostics in ReturnStackAddressChecker for returning a ↵Ted Kremenek
stack-allocated block. Implements the rest of <rdar://problem/7387385>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@89940 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-17Drop unnecessary #include.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@89154 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-08Eliminate &&s in tests.Daniel Dunbar
- 'for i in $(find . -type f); do sed -e 's#\(RUN:.*[^ ]\) *&& *$#\1#g' $i | FileUpdate $i; done', for the curious. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@86430 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-29Remove 'StoreManager::OldCastRegion()', TypedViewRegion (which onlyTed Kremenek
OldCastRegion used), and the associated command line option '-analyzer-store=old-basic-cast'. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77509 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-10Switch BasicStoreManager to use the new CastRegion implementation by default,Ted Kremenek
and replace the 'clang-cc' option '-analyzer-store=basic-new-cast' with '-analyzer-store=basic-old-cast'. We'll keep the old CastRegion implementation around for a little while for regression testing. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@75209 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-06Make 'BasicStoreManager' + 'NewCastRegion' testable from the command line ↵Ted Kremenek
using '-analyzer-store=basic-new-cast'. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74865 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-02Enhance RegionStore to lazily symbolicate fields and array elements forTed Kremenek
structures passed-by-value as function arguments. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74729 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-01Temporarily disable RegionStore for stack-addr-ps.c, as a new test case revealsTed Kremenek
a case where RegionStore doesn't create symbolic values for the fields of structs that are passed-by-value. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74662 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-26Introduce a new concept to the static analyzer: SValuator.Ted Kremenek
GRTransferFuncs had the conflated role of both constructing SVals (symbolic expressions) as well as handling checker-specific logic. Now SValuator has the role of constructing SVals from expressions and GRTransferFuncs just handles checker-specific logic. The motivation is by separating these two concepts we will be able to much more easily create richer constraint-generating logic without coupling it to the main checker transfer function logic. We now have one implementation of SValuator: SimpleSValuator. SimpleSValuator is essentially the SVal-related logic that was in GRSimpleVals (which is removed in this patch). This includes the logic for EvalBinOp, EvalCast, etc. Because SValuator has a narrower role than the old GRTransferFuncs, the interfaces are much simpler, and so is the implementation of SimpleSValuator compared to GRSimpleVals. I also did a line-by-line review of SVal-related logic in GRSimpleVals and cleaned it up while moving it over to SimpleSValuator. As a consequence of removing GRSimpleVals, there is no longer a '-checker-simple' option. The '-checker-cfref' did everything that option did but also ran the retain/release checker. Of course a user may not always wish to run the retain/release checker, nor do we wish core analysis logic buried in the checker-specific logic. The next step is to refactor the logic in CFRefCount.cpp to separate out these pieces into the core analysis engine. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74229 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-16PR3009: Get rid of bogus warning for scalar compound literals.Eli Friedman
This patch isn't quite ideal in that it eliminates the warning for constructs like "int a = {1};", where the braces are in fact redundant. However, that would have required a bunch of refactoring, and it's much less likely to cause confusion compared to redundant nested braces. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71939 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-24Rename clang to clang-cc.Daniel Dunbar
Tests and drivers updated, still need to shuffle dirs. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67602 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-18Fix test: config.h is not guaranteed to exist at the location in Eli Friedman
question. Use __builtin_alloca instead, which is guaranteed to mean the right thing without any includes. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64868 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-17Eliminate dependency on where test is run from.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64837 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-17Don't include alloca.h if it doesn't exist.Ben Laurie
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64771 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-17Static Analyzer driver/options (partial) cleanup:Ted Kremenek
- Move all analyzer options logic to AnalysisConsumer.cpp. - Unified specification of stores/constraints/output to be: -analyzer-output=... -analyzer-store=... -analyzer-constraints=... instead of -analyzer-range-constraints, -analyzer-store-basic, etc. - Updated drivers (ccc-analyzer, scan-builds, new ccc) to obey this new interface - Updated test cases to conform to new driver options git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64737 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-22This test case now passes with RegionStore.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62802 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-20Add -analyze action to run static analyzer, instead of inferring fromDaniel Dunbar
individual checker options. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62634 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-13MemRegion:Ted Kremenek
- Overhauled the notion of "types" for TypedRegions. We now distinguish between the "lvalue" of a region (via getLValueRegion()) and the "rvalue" of a region (va getRValueRegion()). Since a region represents a chunk of memory it has both, but we were conflating these concepts in some cases, leading to some insidious bugs. - Removed AnonPointeeType, partially because it is unused and because it doesn't have a clear notion of lvalue vs rvalue type. We can add it back once there is a need for it and we can resolve its role with these concepts. StoreManager: - Overhauled StoreManager::CastRegion. It expects an *lvalue* type for a region. This is actually what motivated the overhaul to the MemRegion type mechanism. It also no longer returns an SVal; we can just return a MemRegion*. - BasicStoreManager::CastRegion now overlays an "AnonTypedRegion" for pointer-pointer casts. This matches with the MemRegion changes. - Similar changes to RegionStore, except I've added a bunch of FIXMEs where it wasn't 100% clear where we should use TypedRegion::getRValueRegion() or TypedRegion::getLValueRegion(). AuditCFNumberCreate check: - Now blasts through AnonTypedRegions that may layer the original memory region, thus checking if the actually memory block is of the appropriate type. This change was needed to work with the changes to StoreManager::CastRegion. GRExprEngine::VisitCast: - Conform to the new interface of StoreManager::CastRegion. Tests: - None of the analysis tests fail now for using the "basic store". - Disabled the tests 'array-struct.c' and 'rdar-6442306-1.m' pending further testing and bug fixing. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60995 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-13Temporarily XFAIL these tests.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60991 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-07include alloca.h instead of malloc.h. If this doesn't work for everyone we ↵Anders Carlsson
can just declare alloca directly in the file. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58853 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-07Bring in 'alloca' for the Analysis/stack-addr-ps.c test case.Argyrios Kyrtzidis
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58849 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-02Add 'alloca' test case for return-of-stack-address checker.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58554 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-31Added missing 'expected-warning'Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58481 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-31Enhance compound literal test case.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58480 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-30Add missing "expected warning".Ted Kremenek
Add compound literal with empty initializer (just to test the analyzer handles it). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58470 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-30Improve compound literal test case.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58447 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-27Add 'expected-warning' for braces around scalar initializerTed Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58280 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-27Added compound literal test case.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58279 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-31Enhanced path-sensitive return-of-stack-address check to print out the name ↵Ted Kremenek
of the variable whose address was returned. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@54253 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-10Refactored all logic to run the GRSimpleVals and CFRef checker into a commonTed Kremenek
code path in the clang driver. Renamed options --grsimple to -checker-simple and -check-cfref to -checker-cfref. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49500 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-31Added path-sensitive check for return statements that return the addressTed Kremenek
of a stack variable. This is the path-sensitive version of a check that is already done during semantic analysis. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@48980 91177308-0d34-0410-b5e6-96231b3b80d8
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