1df2f3a1f5
Expand retain/release checker to consider methods/function calls that cause a
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tracked object to "escape": it's reference count might be incremented by the
called function, thus causing an object's lifetime to extend beyond when the
local reference count is decremented to 0.
This addresses: <rdar://problem/5933215>
llvm-svn: 51433
2008-05-22 17:31:13 +00:00
c812b23ce8
Cache leaks by the allocation site, not the leak location.
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llvm-svn: 51198
2008-05-16 18:33:44 +00:00
acdde6f099
Rename IsPointerType to LVal::IsLValType, and update CFRefCount::EvalSummary to use IsLValType when conjuring symbols for return values (this fixes a bug with an assertion firing in the analyzer when two qualified objective-c types were compared).
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llvm-svn: 50924
2008-05-09 23:45:33 +00:00
bcdb46830b
Added support for "drain".
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llvm-svn: 50831
2008-05-07 21:17:39 +00:00
f958ec50c0
Expand the CF retain checker to allow the Create/Get rule to apply to any
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function that returns a CFxxxRef, not just functions whose name begins with
CF. This implements <rdar://problem/5917879>.
Added test case for this feature.
Updated calls to CStrInCStrNoCase to swap their arguments, per compatibility
with strcasestr.
llvm-svn: 50829
2008-05-07 20:06:41 +00:00
fcf060fd2f
Flip order of arguments to CStrInStrNoCase.
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llvm-svn: 50824
2008-05-07 18:57:30 +00:00
b6cbf28d82
Use llvm::CStrInCStrNoCase instead of strcasestr, since the latter is not portable.
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Correctly check if the result of CStrInCStrNoCase is NULL to generate summaries; before we were inverting the condition.
llvm-svn: 50822
2008-05-07 18:36:45 +00:00
89bd0fc27d
copy-paste: NS types are not typedefs.
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llvm-svn: 50817
2008-05-07 17:35:41 +00:00
7bf9dc773c
Do not treat **instance** methods "copyWithZone:" and "mutableCopyWithZone:" from NSObject as allocators.
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llvm-svn: 50802
2008-05-07 05:34:45 +00:00
9930bd8c4f
Be less promiscuous with generating summaries for "new", "copy", "create".
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llvm-svn: 50798
2008-05-07 04:25:59 +00:00
08eb30f193
Added auto-summary generation for createXXX, copyXXX, newXXX methods.
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llvm-svn: 50795
2008-05-07 03:45:05 +00:00
aec1811c6c
Don't report leaks for autoreleased objects.
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llvm-svn: 50777
2008-05-06 23:07:13 +00:00
767d0742c7
More comments.
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"#if 0" out some assumptions when auto-generating method summaries.
llvm-svn: 50772
2008-05-06 21:26:51 +00:00
10427bdbb9
Experiment with not converting bug names to lower case.
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llvm-svn: 50753
2008-05-06 18:11:36 +00:00
cb2e636606
Generate "stop" summaries for selectors involving receivers whose type is not NSxxxx.
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llvm-svn: 50721
2008-05-06 15:44:25 +00:00
68f463b88e
Use strncmp correctly.
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llvm-svn: 50715
2008-05-06 06:17:42 +00:00
5f478e9a0a
Make string comparison legible and remove buffer overrun introduced by typo.
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llvm-svn: 50714
2008-05-06 06:09:09 +00:00
2f08fedec1
String comparison cleanups.
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Added test case.
llvm-svn: 50711
2008-05-06 04:28:05 +00:00
041d02201f
Fix logic error in string processing.
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llvm-svn: 50710
2008-05-06 04:21:38 +00:00
c9f4948bba
Remove assertion.
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llvm-svn: 50709
2008-05-06 04:21:10 +00:00
015c3561ad
Use EvalSummary to process message expressions, thereby unifying the checker
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logic for function calls and message expressions.
Use the following heuristic to infer "allocating" instance methods:
[ClassName classWithXXX] allocates an object
Update testcase to reflect this heuristic.
llvm-svn: 50708
2008-05-06 04:20:12 +00:00
821537ecdb
Added receiver effects to EvalSummary.
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llvm-svn: 50700
2008-05-06 02:41:27 +00:00
b0862dca6c
Expand summaries to include "Receiver" effects.
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llvm-svn: 50697
2008-05-06 02:26:56 +00:00
be7c56ed78
Added initialization code to generate initial set of ObjC method summaries (non-instance methods).
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llvm-svn: 50690
2008-05-06 00:38:54 +00:00
0806f910d4
Added code to generate initial set of summaries for instance methods.
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llvm-svn: 50689
2008-05-06 00:30:21 +00:00
3d1e972275
Add summary generation for "initXXX" methods.
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llvm-svn: 50684
2008-05-05 23:55:01 +00:00
046845e842
Make CF retain diagnostics more succinct.
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In a leak's "name", indicate GC or non-GC bugs.
llvm-svn: 50680
2008-05-05 23:16:31 +00:00
00daccdd2a
Initial work on refactoring the CFRefCount checker so that it is more
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generic and handles reference counts for NSObjects.
llvm-svn: 50674
2008-05-05 22:11:16 +00:00
627c3074dd
Improve leak diagnostics to not report a leak on the same line where
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the object was last used. This can be confusing to users.
For example:
// 'y' is leaked
x = foo(y);
instead:
x = foo(y);
// 'y' is leaked
llvm-svn: 50661
2008-05-05 18:50:19 +00:00
3917b82e85
Improved leak diagnostics.
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llvm-svn: 50657
2008-05-05 17:53:17 +00:00
875db81301
Minor refactorings/cleanups in CF retain checker and added support for NSMakeCollectable.
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Added test case for NSMakeCollectable.
llvm-svn: 50653
2008-05-05 16:51:50 +00:00
983be7cee6
Improved diagnostics for leaks: now we report which variable was leaked.
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llvm-svn: 50588
2008-05-02 20:53:50 +00:00
789942cfda
When running the reference count checker twice (GC and non-GC mode), only emit
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basic warnings (dead stores, null dereferences) on the first pass.
llvm-svn: 50584
2008-05-02 18:01:49 +00:00
63d76df236
Fix copy-paste bug.
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llvm-svn: 50557
2008-05-01 23:38:35 +00:00
2722f36465
Remove no longer valid assertion.
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llvm-svn: 50556
2008-05-01 23:28:56 +00:00
1097b4c61f
Added line number diagnostics to indicate the allocation site of the leaked object.
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llvm-svn: 50553
2008-05-01 23:13:35 +00:00
fabfb4677d
Do not highlight bogus ranges for leaks.
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llvm-svn: 50549
2008-05-01 22:50:36 +00:00
8a56b06b5c
Correctly invalidate reference count state when passing objects by reference in message expressions we don't understand.
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llvm-svn: 50541
2008-05-01 21:31:50 +00:00
f0b0f2edfe
Renamed static method.
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llvm-svn: 50533
2008-05-01 18:31:44 +00:00
9f696852c4
When processing "release", "retain", and "autorelease" messages return the
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lval passed as an argument.
Fix: Inverted diagnostic messages.
llvm-svn: 50513
2008-05-01 04:02:04 +00:00
4828aa3152
Added support for "autorelease" message in CF ref. count checker.
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llvm-svn: 50512
2008-05-01 02:18:37 +00:00
b0f87c48cb
added preliminary diagnostics in scan-build results to denote whether
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a CF memory leak occurred with GC enabled, etc.
llvm-svn: 50507
2008-04-30 23:47:44 +00:00
20d8006e93
Teach more of the static analyzer about ObjCQualifiedIdType.
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llvm-svn: 50494
2008-04-30 20:17:27 +00:00
0940b99e3b
Teach the static analysis engine about ObjCQualifiedIdType.
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llvm-svn: 50493
2008-04-30 20:01:29 +00:00
a374ea9a35
Update typestate logic to support GC-mode.
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llvm-svn: 50396
2008-04-29 05:44:10 +00:00
4b7ca776cf
Implement semantics of CFMakeCollectable for the CF-reference count checker.
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llvm-svn: 50395
2008-04-29 05:33:51 +00:00
4d1f422c6f
Provide the option to run the CF-retain checker in GC enabled mode.
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The transfer functions for the checker don't do anything special yet in GC mode.
llvm-svn: 50394
2008-04-29 05:13:59 +00:00
ecbdf75049
Do a better job at computing dead symbols.
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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
2008-04-25 01:25:15 +00:00
b0daf2f6f5
Add preliminary support for flagging leaks around when they happen (doesn't work yet).
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llvm-svn: 50237
2008-04-24 23:57:27 +00:00
f7141597e8
CF reference count checker: handle variadic functions that allocate CF objects.
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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
2008-04-24 17:22:33 +00:00
Ted Kremenek