llvm-svn: 50512

a CF memory leak occurred with GC enabled, etc.

llvm-svn: 50507

llvm-svn: 50494

llvm-svn: 50493

llvm-svn: 50396

llvm-svn: 50395

The transfer functions for the checker don't do anything special yet in GC mode.

llvm-svn: 50394

Implemented support for better localized leaks in the CF reference count checker.
Now leaks should be flagged close to where they occur.

This should implement the desired functionality in <rdar://problem/5879592>, although the diagnostics still need to be improved.

llvm-svn: 50241

llvm-svn: 50237

This fixes <rdar://problem/5886141>.

Part of this change resulted in creating sparser summaries.  I also added
some more comments and did some minor code cleanups.

llvm-svn: 50214

Problem:

In the recently refactored VisitDeref (which processes dereferences), we
were incorrectly skipping the node just generated for the subexpression
of the dereference.  This was a horrible regression.

llvm-svn: 50176

llvm-svn: 50109

can decide the policy on how to cache related bugs.  This allows us to
properly to handle warning about multiple leaks in the same location in the
ref count checker (not yet done).

llvm-svn: 49918

from registered BugTypes.  This helps with debugging.

Add detection of NULL values in ref count checker; this suppresses false positives.

llvm-svn: 49912

llvm-svn: 49907

llvm-svn: 49895

llvm-svn: 49894

llvm-svn: 49892

Shuffled around code in CFRefCount to better pair classes with implementation,
and started adding subclasses of RangedBugReport to handle better diagnostics
for reference count bugs.

llvm-svn: 49889

EmitPathWarning into one method.  We now properly handle emitting warnings
without a PathDiagnosticClient when the warning does not involve a particular
statement.

llvm-svn: 49884

llvm-svn: 49879

involving objects that are returned but have an excessive reference count.

llvm-svn: 49861

llvm-svn: 49824

represent possible stores to "Unknown."

llvm-svn: 49811

llvm-svn: 49771

llvm-svn: 49756

to functions with NULL summaries.

llvm-svn: 49660

warnings are emitted as part of the warnings registered by GRSimpleVals.

llvm-svn: 49658

Still need some boilerplate in BugReporter to report bugs at the end
of a function (not associated with a particular statement).

llvm-svn: 49564

llvm-svn: 49558

llvm-svn: 49556

GRSimpleVals::EvalCal(), and don't change reference counts.

Remove "getDoNothingSummary()", as a NULL summary does the same thing.

Added temporary hack for the "Get" rule for objects that return a pointer type:
treat them as non-owned CF objects.

Added test case to detect the release of a non-owned object.

llvm-svn: 49555

llvm-svn: 49552

use-after-release errors.  Added test case.

llvm-svn: 49509

llvm-svn: 49505

llvm-svn: 49503

code path in the clang driver.

Renamed options --grsimple to -checker-simple and -check-cfref to -checker-cfref.

llvm-svn: 49500

llvm-svn: 49488

llvm-svn: 49455

Bugs are now reported using a combination of "BugType" (previously
BugDescription) and Bug "BugReport" objects, which are fed to BugReporter (which
generates PathDiagnostics). This provides a far more modular way of registering
bug types and plugging in diagnostics.

GRExprEngine now owns its copy of GRCoreEngine, and is not owned by the
ExplodedGraph.

ExplodedGraph is no longer templated on the "checker", but instead on the state
contained in the nodes.

llvm-svn: 49453