Make the Objective-C checker look for subclasses of NSString instead of just NSString and NSMutableString.

llvm-svn: 127268

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.

llvm-svn: 126817

llvm-svn: 126797

In preparation for fixing PR 6884, rework CFGElement to have getAs<> return pointers instead of fresh CFGElements.

- Also, consoldiate getDtorKind() and getKind() into one "kind".
- Add empty getDestructorDecl() method to CFGImplicitDtor.

llvm-svn: 126738

llvm-svn: 126735

llvm-svn: 126734

and hope the wrath of the buildbots will not descend upon me.

llvm-svn: 126728

llvm-svn: 126726

llvm-svn: 126725

llvm-svn: 126724

- renames evalCastNL and evalCastL to evalCastFromNonLoc and
  evalCastFromLoc (avoid abbreviations that aren't well known).

- makes all function parameter names start with a lower case letter
  for consistency and distinction from member variables.

- avoids abbreviations in function parameter names.

Reviewed by kremenek@apple.com.

llvm-svn: 126722

llvm-svn: 126690

llvm-svn: 126676

llvm-svn: 126674

llvm-svn: 126673

They cooperate in that NSErrorChecker listens for ImplicitNullDerefEvent events that
DereferenceChecker can dispatch.
ImplicitNullDerefEvent is when we dereferenced a location that may be null.

llvm-svn: 126659

A checker can register as receiver/listener of "events" (basically it registers a callback
with a function getting called with an argument of the event type) and other checkers can
register as "dispatchers" and can pass an event object to all the listeners.
This allows cooperation amongst checkers but with very loose coupling.

llvm-svn: 126658

llvm-svn: 126657

llvm-svn: 126629

llvm-svn: 126627

llvm-svn: 126626

llvm-svn: 126625

llvm-svn: 126624

llvm-svn: 126623

llvm-svn: 126622

llvm-svn: 126621

llvm-svn: 126620

llvm-svn: 126619

llvm-svn: 126618

llvm-svn: 126617

llvm-svn: 126616

llvm-svn: 126615

llvm-svn: 126614

llvm-svn: 126613

-Now it gets enabled with '-analyzer-checker=DeadStores'.
-The driver passes the above flag by default.

llvm-svn: 126612

llvm-svn: 126611

llvm-svn: 126610

Turns -analyzer-check-buffer-overflows into -analyzer-checker=core.experimental.Overflow

llvm-svn: 126609

llvm-svn: 126608

llvm-svn: 126607