ecc851bb6e
Further refine dead store checking to distinguish between dead stores and dead increments.
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llvm-svn: 53960
2008-07-23 21:16:38 +00:00
46abc7db6b
Properly skip IBOutlets when checking for unused ivars.
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Refine the error message of unused ivars.
Added test case.
llvm-svn: 53957
2008-07-23 18:21:36 +00:00
98f6e582f2
Added path-sensitive checking for null pointer values passed to function arguments marked nonnull.
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This implements <rdar://problem/6069935>
llvm-svn: 53891
2008-07-22 00:46:16 +00:00
8857703b57
Added test case.
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llvm-svn: 53770
2008-07-18 20:48:10 +00:00
ed1f72b67c
For the MissingDealloc check, don't treat IBOutlet ivars as being needed to be released
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llvm-svn: 53647
2008-07-15 23:04:27 +00:00
81bfc074c9
Distinguish between dead stores and dead initializations.
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llvm-svn: 53628
2008-07-15 18:06:32 +00:00
fd7efdf20d
Provide an "Analysis Scope" for Analyses so checks can either be run on code declarations (bodies) or Objective-C @implementation blocks.
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llvm-svn: 53584
2008-07-15 00:46:02 +00:00
3bfb314c25
Add new check: -check-objc-methodsigs. This check scans methods in
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ObjCImplementationDecls and sees if a ancestor class defines a method with the
same selector but with a different type signature. Right now it just compares
return types, and mainly looks at differences in primitive values. The checking
will be expanded in the future.
llvm-svn: 53482
2008-07-11 22:40:47 +00:00
1aaa6d8c19
Add test case.
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llvm-svn: 53335
2008-07-09 18:11:43 +00:00
5708a4661e
'&&' commands together so that the test status reflects the results of all the commands, otherwise the test status will be the result of only the last command.
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llvm-svn: 53135
2008-07-04 10:33:02 +00:00
4449ec09d6
'&&' clang commands together so that the test status reflects the results of all three clang executions.
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llvm-svn: 53132
2008-07-04 04:38:48 +00:00
8044046efb
Fix a bug in the dead stores checker reported in the following email:
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http://lists.cs.uiuc.edu/pipermail/cfe-dev/2008-July/002157.html
Essentially the observer mechanism in LiveVariables was observing block-level
expressions multiple times, leading to a case where the dead store checker could
see a value as dead when it was really live.
llvm-svn: 53115
2008-07-03 22:25:27 +00:00
68b117fca4
Skip the "-dealloc" check if a ObjC class contains no ivars.
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llvm-svn: 53100
2008-07-03 15:37:02 +00:00
0e7d25233e
Added static analysis check to see if a subclass of NSObject implements -dealloc, and whether or not that implementation calls [super dealloc].
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llvm-svn: 53075
2008-07-03 04:29:21 +00:00
80025c257f
Update test case with new clang arguments.
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llvm-svn: 53056
2008-07-02 23:18:57 +00:00
e6b2fa5029
Update test case: simply running "clang -checker-simple" doesn't invoke the dead store checker anymore. We need "-warn-dead-stores" as well.
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llvm-svn: 53055
2008-07-02 23:18:22 +00:00
494e98d0e5
Fix typo in test case.
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llvm-svn: 53024
2008-07-02 15:28:06 +00:00
f0413bfcda
Added AnalysisConsumer, a meta-level ASTConsumer class to drive various
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analyses. This potentially is the primordial origins of a Clang-equivalent
"PassManager".
The new AnalysisConsumer interface allows multiple analyses to be run from a
single invocation of Clang.
Migrated the logic of "-warn-dead-stores" and "-warn-uninit-values" to use the
new AnalysisConsumer interface. The new interface results in a significant code
reduction to incorporate an analysis into the Driver.
Updated a test case to (correctly) acknowledge that it contains a dead store
(this check wasn't being performed because it was previously masked by
-warn-uninit-values).
llvm-svn: 52996
2008-07-02 00:03:09 +00:00
5f06a935a3
Added reference count checker test case.
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llvm-svn: 52993
2008-07-01 23:29:51 +00:00
cf1ab19086
Added a simple static analysis check to look for improper uses of CFCreateNumber.
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llvm-svn: 52799
2008-06-26 23:59:48 +00:00
3185c9c9cd
CF ref checker:
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Tracked objects now have their type information tracked with them.
Enhanced summaries for ObjC methods to include the type information of the receiver.
Used the enhanced summaries to support the idiom that NSWindow owns itself (it sends a release message to itself upon close).
Added some comments.
Did some cleanups with the checker logic using operator overloading (reduced redundant code which I was concerned about being the source of bugs).
llvm-svn: 52741
2008-06-25 21:21:56 +00:00
ab4a8b5213
The CF retain/release checker now assumes that allocations do not fail. Eventually we will add a flag to the driver to enable allocation failures (documented as a FIXME).
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llvm-svn: 52632
2008-06-23 18:02:52 +00:00
68d2368064
Include stdint.h instead of stdio.h.
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llvm-svn: 52578
2008-06-21 17:20:55 +00:00
22cf89d9cd
Test the dead-store checker using both -warn-dead-stores and -checker-simple.
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llvm-svn: 52568
2008-06-20 23:14:52 +00:00
34a691734e
Modified the dead stores checker to...
...
1) Check if a dead store appears as a subexpression. For such cases, we emit
a verbose diagnostic so that users aren't confused. This addresses:
<rdar://problem/5968508> checker gives misleading report for dead store in loop
2) Don't emit a dead store warning when assigning a null value to a pointer.
This is a common form of defensive programming. We may wish to make
this an option to the the checker one day.
This addresses the feature request in the following email:
http://lists.cs.uiuc.edu/pipermail/cfe-dev/2008-June/001978.html
llvm-svn: 52555
2008-06-20 21:45:25 +00:00
46c82ab994
Introduce initial transfer function support for __imag__ and __real__. We don't
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have complex RValues yet, so this logic is only fully implemented when __imag__
and __real__ are used on non-complex types.
llvm-svn: 52501
2008-06-19 17:55:38 +00:00
f3c8650502
Move test case "uninit-msg-expr.m" from Analysis-Apple to Analysis (now works on all platforms).
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llvm-svn: 52362
2008-06-16 21:15:29 +00:00
2eed4d7a25
Moved test case NoReturn.m from Analysis-Apple to Analysis (now works on all platforms).
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llvm-svn: 52359
2008-06-16 21:05:04 +00:00
bbe6111cc3
Move NSString.m test case from Analysis-Apple to Analysis. The test case now works on all platforms.
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llvm-svn: 52354
2008-06-16 20:37:30 +00:00
ccafce3d4c
Update test case to use -pedantic (makes the test case more clear).
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llvm-svn: 52349
2008-06-16 19:53:46 +00:00
5935a17daf
Fix misspelling of "svelte".
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llvm-svn: 52348
2008-06-16 19:51:41 +00:00
951bc67096
Move Analysis-Apple/CFString.c to Analysis (the test case now works on all platforms).
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llvm-svn: 52346
2008-06-16 19:35:31 +00:00
107f13971f
Move CFDateGC.m test case from Analysis-Apple to Analysis (it now runs on all platforms).
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llvm-svn: 52344
2008-06-16 18:46:17 +00:00
7056bb1f21
Moved CFDate.m from test/Analysis-Apple to test/Analysis, and added the necessary declarations from Foundation.h to CFDate.m so that the test case can be exercised on all platforms.
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llvm-svn: 52343
2008-06-16 18:34:22 +00:00
91f035cda7
Improve dead stores diagnostics to include the variable name.
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llvm-svn: 51395
2008-05-21 22:59:16 +00:00
b120ff1b95
Fixed bug in the transfer function for dereferences: the loaded value from EvalLoad should bind to the UnaryOperator*, not its subexpression.
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Added test case to exercise this fix when checking for uses of uninitialized values.
Patch by Zhongxing Xu!
llvm-svn: 51377
2008-05-21 15:48:33 +00:00
f15cd14a3d
Emit dead store warnings for ++ and -- operators.
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llvm-svn: 50679
2008-05-05 23:12:21 +00:00
db04a9e967
When reporting branch conditions that evaluate to an uninitialized value,
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highlight the most nested subexpression that appears most responsible (giving
the user better diagnostic feedback).
Updated test cases to illustrate this feature.
Implements: <rdar://problem/5880443>
llvm-svn: 50647
2008-05-05 15:56:53 +00:00
772d9f0aae
Added test case for the static analyzer.
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llvm-svn: 50467
2008-04-30 04:40:48 +00:00
10bad41159
Added test case to test null dereference checking with lval::ArrayOffset.
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llvm-svn: 50454
2008-04-29 23:25:09 +00:00
6e06f91085
Added uninitialized-values (path-sensitive) test case as a regression test
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for the fix in r50178 (http://llvm.org/viewvc/llvm-project?rev=50178&view=rev ).
This fix was for <rdar://problem/5881148>.
llvm-svn: 50220
2008-04-24 18:28:14 +00:00
c79c0591d6
Added lval type (and tracking) for StringLiterals.
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llvm-svn: 50109
2008-04-22 21:39:21 +00:00
eccf3e5821
Added "nonlval::LValAsInteger" to represent abstract LVals casted to integers, allowing us to track lvals when they are casted back to pointers.
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llvm-svn: 50108
2008-04-22 21:10:18 +00:00
6fdd3b35dc
Added null dereference test involving arrays.
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llvm-svn: 50084
2008-04-22 04:56:55 +00:00
efa92f1dfc
Added missing expected-warning.
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llvm-svn: 50073
2008-04-21 23:45:26 +00:00
503924bb9c
Added null dereference test case looking for null dereferences involving MemberExpr.
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llvm-svn: 50072
2008-04-21 23:44:17 +00:00
15d8f4cc27
Added test case illustrating the use of '&'.
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llvm-svn: 49735
2008-04-15 18:37:29 +00:00
16a8a3be41
Added test case to dead stores checker.
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llvm-svn: 49647
2008-04-14 15:56:17 +00:00
4a78c3ae11
Refactored all logic to run the GRSimpleVals and CFRef checker into a common
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code path in the clang driver.
Renamed options --grsimple to -checker-simple and -check-cfref to -checker-cfref.
llvm-svn: 49500
2008-04-10 22:16:52 +00:00
018ba60f8e
Added path-sensitive null dereference test case.
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llvm-svn: 49095
2008-04-02 16:54:39 +00:00
f646774f32
Added path-sensitive check for return statements that return the address
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of a stack variable. This is the path-sensitive version of a check that
is already done during semantic analysis.
llvm-svn: 48980
2008-03-31 15:02:58 +00:00
fb475ec504
Changed merge operation for uninitialized values analysis to "intersect" (previous union).
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The effect is that if a variable is uninitialized along a branch (but initialized along another), at merge points it is considered uninitialized. Previously we had the opposite behavior. The new behavior is more conservative, and more in line with gcc's behavior.
llvm-svn: 48689
2008-03-22 20:11:00 +00:00
c6a8352820
Convert tabs to spaces.
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llvm-svn: 48539
2008-03-19 07:31:52 +00:00
801c5c7467
GCC has an extension where the left hand side of the ? : operator can be omitted. Handle this in a few more places.
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llvm-svn: 44462
2007-11-30 19:04:31 +00:00
8da1db4f34
The checking for the delimiters of expected error/warning messages was
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looking only for { and } instead of {{ and }}. Changed it to check for
this explicitly.
llvm-svn: 44326
2007-11-26 08:26:20 +00:00
0d20033c6a
Added more test cases for uninitialized values checker.
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llvm-svn: 44307
2007-11-24 23:06:58 +00:00
2e04d73d83
Fixed bogus culling of uninitialized-values "taint" propagation during assignments.
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We accidentally were throttling the propagation of uninitialized state across
assignments (e.g. x = y). Thanks to Anders Carlsson for spotting this problem.
Added test cases to test suite to provide regression testing for the
uninitialized values analysis.
llvm-svn: 44306
2007-11-24 20:07:36 +00:00
33407b3338
Moved dead-stores test cast to a new test suite subdirectory: Analysis.
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llvm-svn: 44305
2007-11-24 19:49:35 +00:00
Ted Kremenek