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343 Commits

Author SHA1 Message Date
Ted Kremenek
404b132dc0 Move 'hasStackStorage()' and 'hasHeapStorage()' from MemRegionManager to MemRegion. 
llvm-svn: 73973
 2009-06-23 18:05:21 +00:00
Zhongxing Xu
7718ae4701 Move all factory methods from SVal to ValueManager. API cleanup! 
llvm-svn: 73954
 2009-06-23 09:02:15 +00:00
Ted Kremenek
fb87e30815 MemRegions: 
- Embed a reference to MemRegionManager objects in MemSpaceRegion objects
- Use this embedded reference for MemRegion objects to access ASTContext objects without external help
- Use this access to ASTContext to simplify 'isBoundable' (no ASTContext& argument required)

llvm-svn: 73935
 2009-06-23 00:46:41 +00:00
Ted Kremenek
095f1a9848 Move clients over from using GRStateManager::BindXXX and friends to 
GRState->bindXXX and friends (and constify some arguments along the way).

llvm-svn: 73740
 2009-06-18 23:58:37 +00:00
Ted Kremenek
f9906843b7 libAnalysis: 
- Remove the 'isFeasible' flag from all uses of 'Assume'.
- Remove the 'Assume' methods from GRStateManager.  Now the only way to
  create a new GRState with an assumption is to use the new 'assume' methods
  in GRState.

llvm-svn: 73731
 2009-06-18 22:57:13 +00:00
Douglas Gregor
78bd61f661 Move the static DeclAttrs map into ASTContext. Fixes <rdar://problem/6983177>. 
llvm-svn: 73702
 2009-06-18 16:11:24 +00:00
Ted Kremenek
d93c6e3fd6 Remove more dependencies on GRStateRef. As a consequence, we can now 
pretty-print a GRState object anywhere it is referenced (instead of
needing a GRStateRef of a GRStateManager handy).

llvm-svn: 73669
 2009-06-18 01:23:53 +00:00
Ted Kremenek
89a303caac Remove another dependency on GRStateRef. 
llvm-svn: 73667
 2009-06-18 00:49:02 +00:00
Ted Kremenek
96aa146d90 Fix: <rdar://problem/6945561> -[CIContext createCGLayerWithSize:info:] misinterpreted by clang scan-build 
llvm-svn: 73415
 2009-06-15 20:58:58 +00:00
Ted Kremenek
3092e9c5c2 Fix: <rdar://problem/6961230> add knowledge of IOKit functions to retain/release checker 
llvm-svn: 73411
 2009-06-15 20:36:07 +00:00
Ted Kremenek
ea675cf6a3 Add summary lookup for IOServiceGetMatchingService. 
Convert tabs to spaces.

llvm-svn: 73198
 2009-06-11 18:17:24 +00:00
Ted Kremenek
a74ead4103 Refactor some function name -> summary lookup using a switch statement. 
llvm-svn: 73197
 2009-06-11 18:10:48 +00:00
Ted Kremenek
a03705c82d Fix: 
<rdar://problem/6948053> False positive: object substitution during -init* methods warns about returning +0 when using -fobjc-gc-only

llvm-svn: 72971
 2009-06-05 23:18:01 +00:00
Ted Kremenek
ea1c221334 Enhance attribute cf_returns_retained to also work (in the analyzer) 
for non-Objctive-C pointer types.  This implicitly documents that the
return type is a CF object reference.

llvm-svn: 72968
 2009-06-05 23:00:33 +00:00
Ted Kremenek
1036912118 Add special cases to retain checker for 'create' methods in QCView, QCRenderer, and CIContext (Apple APIs). 
This fixes:

<rdar://problem/6902710> clang: false positives w/QC and CoreImage methods.

llvm-svn: 72187
 2009-05-20 22:39:57 +00:00
Ted Kremenek
501ba0365a Fix PR 4230: Don't flag leaks of NSAutoreleasePools until we know that we aren' at the top-most scope of autorelease pools. 
llvm-svn: 72065
 2009-05-18 23:14:34 +00:00
Ted Kremenek
e4302ee3bb Fix: <rdar://problem/6893565> False positive: don't flag leaks for return types that cannot be determined to be CF types 
llvm-svn: 71921
 2009-05-16 01:38:01 +00:00
Ted Kremenek
3281977dbb Fix crash when deriving the enclosing summary of a method whose first selector slot has a null IdentifierInfo*. This happens when analyzing Growl. 
llvm-svn: 71857
 2009-05-15 15:49:00 +00:00
Ted Kremenek
4785e41c12 Remove extra whitespace character in string literal. Purely cosmetic. 
llvm-svn: 71847
 2009-05-15 06:02:08 +00:00
Ted Kremenek
f9fa3cb78a Fix <rdar://problem/6859457> [NSData dataWithBytesNoCopy] does not return a retained object. 
llvm-svn: 71797
 2009-05-14 21:29:16 +00:00
Ted Kremenek
5801f65a52 Fix crasher reported in PR 4209 caused by an invalid summary 
generation when EvalObjCMessageExpr() did not resolve the
ObjCInterfaceDecl* for a receiver when the receiver's symbolic value
wasn't being explicitly tracked.

llvm-svn: 71685
 2009-05-13 18:16:01 +00:00
Ted Kremenek
051a03d698 Fix crasher in CFRefCount.cpp reported by Nikita Zhuk due to recently added autorelease tracking. 
llvm-svn: 71647
 2009-05-13 07:12:33 +00:00
Ted Kremenek
1272f706ca Fix: <rdar://problem/6320065> false positive - init method returns an object owned by caller 
Now 'init' methods are treated by the retain/release checker as
claiming their receiver and allocating a new object.

llvm-svn: 71579
 2009-05-12 20:06:54 +00:00
Zhongxing Xu
08a2ede018 Add logic for invalidating array region to CFRefCount.cpp. When invalidating 
array region, set its default value to conjured symbol. When retrieving its
element, create new region value symbol for the element.

Also fix some 80 columns violations.

llvm-svn: 71548
 2009-05-12 10:10:00 +00:00
Ted Kremenek
95d181936a Fix <rdar://problem/6877235> Classes typedef-ed to CF objects should get the same treatment as CF objects 
This was accomplished by having	'isTypeRef' recursively walk the typedef stack.

llvm-svn: 71538
 2009-05-12 04:53:03 +00:00
Ted Kremenek
97f75f8bda When stripping element regions for invalidating region values, treat FieldRegions and ObjCIvarRegions as "base" regions in addition to VarRegions. 
llvm-svn: 71488
 2009-05-11 22:55:17 +00:00
Ted Kremenek
d0e3ab2196 Fix regression reported in <rdar://problem/6866843>. The analyzer should extend the lifetime of an object stored to a container. 
llvm-svn: 71452
 2009-05-11 18:30:24 +00:00
Ted Kremenek
dc7853cd98 Fix a bug found by Thomas Clement where 'return [[[NSString alloc] init] autorelease]' would emit a false 'too many overreleases' error. 
llvm-svn: 71432
 2009-05-11 15:26:06 +00:00
Zhongxing Xu
52091db11f TypedRegion is a too general assumption. Usually we only want to invalidate 
the VarRegion as a super region of an ElementRegion.

llvm-svn: 71431
 2009-05-11 14:28:14 +00:00
Ted Kremenek
1f8e4346fa Add special warning about returning a retained object where a GC'ed object is expected. 
llvm-svn: 71397
 2009-05-10 16:52:15 +00:00
Ted Kremenek
dee56e37fc retain/release checker: Flag a warning for non-owned objects returned 
where an owned one is expected.  Also add preliminary checking for
returning a positive retain count object in GC mode where an owned GC
object is expected.

llvm-svn: 71388
 2009-05-10 06:25:57 +00:00
Ted Kremenek
3978f7972d analyzer: 
- Improve -autorelease diagnostics.
- Improve VLA diagnostics.
- Use "short description" for bug when outputting to TextDiagnostics

llvm-svn: 71383
 2009-05-10 05:11:21 +00:00
Zhongxing Xu
34d04b3ca9 As discussed with Ted, rename TypedRegion::getObjectType() to 
TypedRegion::getValueType().

llvm-svn: 71321
 2009-05-09 03:57:34 +00:00
Ted Kremenek
c2de72776c Add back analyzer support for ns_returns_retained and cf_returns_retained. 
llvm-svn: 71309
 2009-05-09 02:58:13 +00:00
Ted Kremenek
2d0ff62a0d It lives! The retain/release checker now tracks objects that are sent 
'autorelease'.

llvm-svn: 71307
 2009-05-09 01:50:57 +00:00
Zhongxing Xu
8038f7b30f rename: MemRegion: 
RValueType => ObjectType
 LValueType => LocationType

No functionality change.

llvm-svn: 71304
 2009-05-09 00:50:33 +00:00
Ted Kremenek
9ec08aa3f7 More hacking on autorelease errors. We now can emit basic errors (disabled for 
now until ready).

llvm-svn: 71303
 2009-05-09 00:44:07 +00:00
Ted Kremenek
d35272f96b Put most of the boilerplate logic in place for reporting autorelease errors. 
llvm-svn: 71301
 2009-05-09 00:10:05 +00:00
Ted Kremenek
8c8fb488e6 retain/release checker: Add stub for HandleAutoreleaseCounts. 
llvm-svn: 71290
 2009-05-08 23:32:51 +00:00
Ted Kremenek
884a8996c5 retain/release checker: Refactor error-reporting code in EvalDeadSymbols and 
EvalEndPath. This sets the stage for handling autorelease counts.

llvm-svn: 71283
 2009-05-08 23:09:42 +00:00
Ted Kremenek
3a0516b25a retain checker: Track the number of times a tracked object is sent 
'autorelease'. This isn't used yet to flag errors.

llvm-svn: 71244
 2009-05-08 20:01:42 +00:00
Ted Kremenek
062c14ba24 Remove experimental ownership attributes from Clang. 
llvm-svn: 71216
 2009-05-08 15:19:25 +00:00
Ted Kremenek
9157fbb6a6 Minor code cleanup in retain/release checker in preparation for some 
other changes.  Instead of repeatedly checking for GC mode when
getting the return effect, just do this computation once.

llvm-svn: 71193
 2009-05-07 23:40:42 +00:00
Ted Kremenek
bb8d546208 Refactor BugReporter interface to have a new 'BugReporterContext' and 
'BugReporterVisitor'. This simplifies callbacks from BugReporter to BugReports
(via VisitNode). It also lays the foundation for arbitrary visitor "call backs"
that can be registered to a BugReporterContext as a PathDiagnostic is
constructed. These call backs can help operate as separate "experts" that can
work on constructed pieces of a PathDiagnostic for which they possess special
knowledge.

llvm-svn: 71121
 2009-05-06 21:39:49 +00:00
Ted Kremenek
0626df4eeb Fix analyzer regression reported in PR 4164: 
- Update the old StoreManager::CastRegion to strip off 'ElementRegions' when
  casting to void* (Zhongxing: please validate)
- Pass-by-reference argument invalidation logic in CFRefCount.cpp:
  - Strip ElementRegions when the ElementRegion is just a 'raw data' view
    on top of the underlying typed region.

llvm-svn: 71094
 2009-05-06 18:19:24 +00:00
Ted Kremenek
213ff5a98e Implement attribute 'ns_autorelease'. 
llvm-svn: 70990
 2009-05-05 18:44:20 +00:00
Ted Kremenek
94c464ef22 Implement attribute 'cf_returns_owned' (mirrors 'ns_returns_owned'). 
llvm-svn: 70952
 2009-05-05 00:46:09 +00:00
Ted Kremenek
6bdfcf47ad Remove experimental attribute 'ns_ownership_make_collectable.' 
llvm-svn: 70940
 2009-05-04 23:46:06 +00:00
Ted Kremenek
0836a19931 Rename attributes 'objc_ownership...' to 'ns_ownership...'. 
llvm-svn: 70897
 2009-05-04 19:10:19 +00:00
Ted Kremenek
5dbfa3fadd Rename attributes: 
'objc_ownership_cfretain' -> 'cf_ownership_retain'
'objc_ownership_cfrelease' -> 'cf_ownership_release'

Motivation: Core Foundation objects can be used in isolation from Objective-C,
and this forces users to reason about the separate semantics of CF objects. More
Sema support pending.

llvm-svn: 70884
 2009-05-04 17:29:57 +00:00