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2011-03-19Rename class 'CFGReachabilityAnalysis' to 'CFGReverseBlockReachabilityAnalysis'.Ted Kremenek
This rename serves two purposes: - It reflects the actual functionality of this analysis. - We will have more than one reachability analysis. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127930 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-15Split warnings from -Wuninitialized-experimental into "must-be-initialized" ↵Ted Kremenek
and "may-be-initialized" warnings, each controlled by different flags. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127666 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-15Rename UninitializedValuesV2 to UninitializedValues.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127657 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-15Remove old UninitializedValues analysis.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127656 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-10When doing reachability analysis for warnings issued under ↵Ted Kremenek
DiagRuntimeBehavior, don't construct a ParentMap or CFGStmtMap. Instead, create a small set of Stmt* -> CFGBlock* mappings during CFG construction for only the statements we care about relating to the diagnostics we want to check for reachability. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127396 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-10Rework interaction between AnalysisContext and CFG::BuildOptions to keep a ↵Ted Kremenek
BuildOptions object around instead of keeping a copy of the flags. Moreover, change AnalysisContext to use an OwningPtr for created analysis objects instead of directly managing them. Finally, add a 'forcedBlkExprs' entry to CFG::BuildOptions that will be used by the CFGBuilder to force specific expressions to be block-level expressions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127385 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-03Teach CFGImplicitDtor::getDestructorDecl() about arrays of objects with ↵Ted Kremenek
destructors. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126910 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-02Introduce CFGImplicitDtor::isNoReturn() to query whether a destructor ↵Ted Kremenek
actually returns. Use this for -Wreturn-type to prune false positives reported in PR 6884. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126875 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-02Move some of the logic about classifying Objective-C methods intoJohn McCall
conventional categories into Basic and AST. Update the self-init checker to use this logic; CFRefCountChecker is complicated enough that I didn't want to touch it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126817 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-01In preparation for fixing PR 6884, rework CFGElement to have getAs<> return ↵Ted Kremenek
pointers instead of fresh CFGElements. - Also, consoldiate getDtorKind() and getKind() into one "kind". - Add empty getDestructorDecl() method to CFGImplicitDtor. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126738 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-23Migrate CFGReachabilityAnalysis out of the IdempotentOperationsChecker and ↵Ted Kremenek
into its own analysis file. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126289 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-23Have IdempotentOperationsChecker pull its CFGStmtMap from AnalysisContext.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126288 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-18Handle UsingDecl in CFGRecStmtDeclVisitor.Argyrios Kyrtzidis
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125814 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-17Change the representation of GNU ?: expressions to use a different expressionJohn McCall
class and to bind the shared value using OpaqueValueExpr. This fixes an unnoticed problem with deserialization of these expressions where the deserialized form would lose the vital pointer-equality trait; or rather, it fixes it because this patch also does the right thing for deserializing OVEs. Change OVEs to not be a "temporary object" in the sense that copy elision is permitted. This new representation is not totally unawkward to work with, but I think that's really part and parcel with the semantics we're modelling here. In particular, it's much easier to fix things like the copy elision bug and to make the CFG look right. I've tried to update the analyzer to deal with this in at least some obvious cases, and I think we get a much better CFG out, but the printing of OpaqueValueExprs probably needs some work. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125744 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-14Handle 'UsingDirective' in CFGRecStmtDeclVisitor.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125491 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-13Give some convenient idiomatic accessors to Stmt::child_range andJohn McCall
Stmt::const_child_range, then make a bunch of places use them instead of the individual iterator accessors. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125450 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-11Don't report dead stores on unreachable code paths. Fixes ↵Ted Kremenek
<rdar://problem/8405222>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125415 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-09Make ProgramPoint::getTag() public.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125153 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-27Separate the access-control diagnostics from other diagnostics that do not ↵Douglas Gregor
have SFINAE behavior. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@124441 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-25Teach -Wuninitialized-experimental to also warnTed Kremenek
about uninitialized variables captured by blocks. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@124213 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-16Add AnalysisContext::dumpCFG.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123602 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-15Add initial prototype for implementation ofTed Kremenek
-Wuninitialized based on CFG dataflow analysis. WIP. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123512 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-15Add const version if CFG::isBlkExpr().Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123511 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-13Remove CheckerContext's dependence on settingTed Kremenek
the node builder's "tag" ivar (which we would like to remove). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123361 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-11[analyzer] Add 'bool ignorePrefix' parameter to ↵Argyrios Kyrtzidis
cocoa::deriveNamingConvention to control whether the prefix should be ignored. E.g. if ignorePrefix is true, "_init" and "init" selectors will both be result in InitRule, but if ignorePrefix is false, only "init" will return InitRule. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123262 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-11Remove ProgramPoint parameter from GenericNodeBuilder::generateNode().Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123240 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-10Remove dead code.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123168 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-08Renamed CXXBaseOrMemberInitializer to CXXCtorInitializer. This is both shorter,Sean Hunt
more accurate, and makes it make sense for it to hold a delegating constructor call. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123084 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-08Add semantic checking that the "thousands grouping"Ted Kremenek
prefix in a printf format string is matched with the appropriate conversion specifier. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123055 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-08Add printf format string parsing support for 'Ted Kremenek
prefix to format conversions (POSIX extension). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123054 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-23Rename static analyzer namespace 'GR' to 'ento'.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122492 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-22[analyzer] Refactoring: Move stuff into namespace 'GR'.Argyrios Kyrtzidis
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122423 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-19Add missing standard includes. Patch by Joerg Sonnenberger!Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122194 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-17Move CocoaConventions.[h,cpp] from libCheckerTed Kremenek
to libAnalysis. Similar to Format (format string checking), CocoaConventions has the potential to serve clients other than the static analyzer. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122040 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-16Start migration of static analyzer to using theTed Kremenek
implicit lvalue-to-rvalue casts that John McCall recently introduced. This causes a whole bunch of logic in the analyzer for handling lvalues to vanish. It does, however, raise a few issues in the analyzer w.r.t to modeling various constructs (e.g., field accesses to compound literals). The .c/.m analysis test cases that fail are due to a missing lvalue-to-rvalue cast that will get introduced into the AST. The .cpp failures were more than I could investigate in one go, and the patch was already getting huge. I have XFAILED some of these tests, and they should obviously be further investigated. Some highlights of this patch include: - CFG no longer requires an lvalue bit for CFGElements - StackFrameContext doesn't need an 'asLValue' flag - The "VisitLValue" path from GRExprEngine has been eliminated. Besides the test case failures (XFAILed), there are surely other bugs that are fallout from this change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@121960 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-29Merge System into Support.Michael J. Spencer
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120297 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-24Let StackFrameContext represent if the call expr is evaluated as lvalue.Zhongxing Xu
This is required for supporting const reference to temporary objects. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120093 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-24Use StackFrameContext directly in CallEnter program point. Then we don't needZhongxing Xu
to remake the stackframe everytime in GRExprEngine::ProcessCallEnter(). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120087 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-16Handle member initializer in C++ ctor. Zhongxing Xu
- Add a new Kind of ProgramPoint: PostInitializer. - Still use GRStmtNodeBuilder. But special handling PostInitializer in GRStmtNodeBuilder::GenerateAutoTransition(). - Someday we should clean up the interface of GRStmtNodeBuilder. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@119335 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-15Add skeleton for handling other kinds of CFGElements.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@119135 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-03Added generating destructors for temporary objects. Two cases I know of, ↵Marcin Swiderski
that are not handled properly: 1. For statement: const C& c = C(0) ?: C(1) destructors generated for condition will not differ from those generated for case without prolonged lifetime of temporary, 2. There will be no destructor for constant reference member bound to temporary at the exit from constructor. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@118158 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-29Added CFGTerminator class, that holds information about CFGBlock terminator ↵Marcin Swiderski
statement. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@117642 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-22Fix a horrible bug in all dataflow analyses that use CFGRecStmtVisitor ↵Ted Kremenek
(including live variables analysis). We shouldn't recurse into CompoundStmts since they are already inlined in the CFG. This could result in bogus dead stores warnings (among other things). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@117162 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-05Added support for base and member destructors in destructor.Marcin Swiderski
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@115592 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-04Added support for C++ initializers in CFG.Marcin Swiderski
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@115493 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-30Added methods for inserting CFGAutomaticObjDtors to CFGBlocks,Marcin Swiderski
Fixed some misspells in comments. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@115236 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-30Added two new command line arguments:Marcin Swiderski
-cfg-add-implicit-dtors - sets CFG::BuildOptions::AddImplicitDtors for AnalysisCosumer to true, -cfg-add-initializers - sets CFG::BuildOptions::AddInitializers for AnalysisCosumer to true. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@115142 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-21Added:Marcin Swiderski
- definitions of interfaces for CFGInitializer and CFGAutomaticObjDtor, - support for above classes to print_elem function (renamed print_stmt), - support for VarDecls in StmtPrinterHelper. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@114403 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-16Fix the clang build after Zhongxing Xu's commit.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@114059 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-16Introduce new CFGElement hierarchy to support C++ CFG, based on Marcin's patchZhongxing Xu
and discussions with Ted and Jordy. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@114056 91177308-0d34-0410-b5e6-96231b3b80d8
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