Essentially, a bug centers around a story for various symbols and regions.  We should only include
the path diagnostic events that relate to those symbols and regions.

The pruning is done by associating a set of interesting symbols and regions with a BugReporter, which
can be modified at BugReport creation or by BugReporterVisitors.

This patch reduces the diagnostics emitted in several of our test cases.  I've vetted these as
having desired behavior.  The only regression is a missing null check diagnostic for the return
value of realloc() in test/Analysis/malloc-plist.c.  This will require some investigation to fix,
and I have added a FIXME to the test case.

llvm-svn: 152361

(I was going to fix the TODO about DenseMap too, but
that would break self-host right now. See PR11922.)

llvm-svn: 149799

llvm-svn: 149798

Fix all the transitive include users.

llvm-svn: 149783

Fix all the files that depended on transitive includes of Diagnostic.h.
With this patch in place changing a diagnostic no longer requires a full rebuild of the StaticAnalyzer.

llvm-svn: 149781

At this point this is largely cosmetic, but it opens the door to replace
ProgramStateRef with a smart pointer that more eagerly acts in the role
of reclaiming unused ProgramState objects.

llvm-svn: 149081

Also, slightly modify the diagnostic message in ArrayBound and DivZero (still use 'taint', which might not mean much to the user, but plan on changing it later).

llvm-svn: 148626

(Stmt*,LocationContext*) pairs to SVals instead of Stmt* to SVals.

This is needed to support basic IPA via inlining.  Without this, we cannot tell
if a Stmt* binding is part of the current analysis scope (StackFrameContext) or
part of a parent context.

This change introduces an uglification of the use of getSVal(), and thus takes
two steps forward and one step back.  There are also potential performance implications
of enlarging the Environment.  Both can be addressed going forward by refactoring the
APIs and optimizing the internal representation of Environment.  This patch
mainly introduces the functionality upon when we want to build upon (and clean up).

llvm-svn: 147688

CheckerContext::getPredecessor is only used to get to the LocationContext
half of the times.

llvm-svn: 143061

Also document addTransition methods.

llvm-svn: 143059

Remove dead members/parameters: ProgramState, respondsToCallback, autoTransition.
Remove addTransition method since it's the same as generateNode. Maybe we should
rename generateNode to genTransition (since a transition is always automatically
generated)?

llvm-svn: 142946

Static Analyzer Diagnostics: Kill the addVisitorCreator(callbackTy, void*) API in favor of addVisitor(BugReporterVisitor*).

1) Create a header file to expose the predefined visitors. And move the parent(BugReporterVisitor) there as well.

2) Remove the registerXXXVisitor functions - the Visitor constructors/getters can be used now to create the object. One exception is registerVarDeclsLastStore(), which registers more then one visitor, so make it static member of FindLastStoreBRVisitor.

3) Modify all the checkers to use the new API.

llvm-svn: 138126

Remove EnhancedBugReport and RangedBugReport - pull all the extra functionality they provided into their parent BugReport. The only functional changes are: made getRanges() non const - it adds default range to Ranges if none are supplied, made getStmt() private, which was another FIXME.

llvm-svn: 137894

llvm-svn: 137665

Cleanup various declarations of 'Stmt*' to be 'Stmt *', etc. in libAnalyzer and libStaticAnalyzer[*].  It was highly inconsistent, and very ugly to look at.

llvm-svn: 137537

llvm-svn: 126726

llvm-svn: 126621

Split 'include/clang/StaticAnalyzer' into 'include/clang/StaticAnalyzer/Core' and 'include/clang/StaticAnalyzer/Checkers'.

This layout matches lib/StaticAnalyzer, which corresponds to two StaticAnalyzer libraries.

llvm-svn: 125251

[analyzer] lib/StaticAnalyzer/Checkers/ExprEngineInternalChecks.h -> lib/StaticAnalyzer/Checkers/InternalChecks.h

llvm-svn: 125121

layout.  :)

Rename the 'EntoSA' directories to 'StaticAnalyzer'.

Internally we will still use the 'ento' namespace
for the analyzer engine (unless there are further
sabre rattlings...).

llvm-svn: 122514

update Makefile.

llvm-svn: 122493

llvm-svn: 122492

llvm-svn: 122424

llvm-svn: 122423

[analyzer] Refactoring: Move checkers into lib/GR/Checkers and their own library, libclangGRCheckers

llvm-svn: 122422

llvm-svn: 122421

llvm-svn: 122420

llvm-svn: 122270

llvm-svn: 120696

to 'assumeXXX'.

llvm-svn: 120614

'evalXXX'.

llvm-svn: 120609

reflects what the class actually does.

llvm-svn: 120605

to the new constants.

llvm-svn: 112047

llvm-svn: 107728

llvm-svn: 107645

llvm-svn: 107603

llvm-svn: 99731

llvm-svn: 95545

        GRState::getSVal(MemRegion*) => Load().

llvm-svn: 95541

llvm-svn: 94428