llvm-svn: 90028

Split CodeTextRegion into FunctionTextRegion and BlockTextRegion.  This a precursor to having basic static analysis support for blocks.

llvm-svn: 89828

PthreadLockChecker doesn't need PreVisitCallExpr() yet.  All the current logic should be done in PostVisitCallExpr()

llvm-svn: 86959

Add most of the boilerplate logic for a simple pthread_mutux_lock() -> pthread_mutex_unlock() checker.  We need to add a visitor method to Checker for handling dead symbols in order to detect locks that are not unlocked.

llvm-svn: 86958