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11 Commits

Author SHA1 Message Date
Tom Care 826e6b4023 Improved false positive rate for the idempotent operations checker and moved it into the default path-sensitive analysis options. 
- Added checks for static local variables, self assigned parameters, and truncating/extending self assignments
- Removed command line option (now default with --analyze)
- Updated test cases to pass with idempotent operation warnings

llvm-svn: 108550
 2010-07-16 20:41:41 +00:00
Zhongxing Xu 1225aacacf Merge StackAddrLeakChecker and ReturnStackAddressChecker. 
llvm-svn: 105687
 2010-06-09 06:08:24 +00:00
Zhongxing Xu 87e7fc5dc2 Add a checker check if a global variable holds a local variable's address after 
the function call is left where the local variable is declared.

llvm-svn: 105602
 2010-06-08 10:00:00 +00:00
Zhongxing Xu 658dd8b176 CastSizeChecker checks when casting a malloc'ed symbolic region to type T, 
whether the size of the symbolic region is a multiple of the size of T.
Fixes PR6123 and PR7217.

llvm-svn: 104584
 2010-05-25 04:59:19 +00:00
Ted Kremenek b663ffe5f8 Add MacOSXAPIChecker, a meta checker to include various precondition checks for calls 
to various MacOS X functions.  The checks in BasicObjCFoundationChecks.cpp will
gradually be migrated here.

As a first check, check that when 'dispatch_once()' is passed a predicate value
that has non-local storage.

llvm-svn: 97116
 2010-02-25 05:44:09 +00:00
Ted Kremenek d55522f02e Add UnixAPIChecker, a meta checker to include various precondition checks for calls 
to various unix/posix functions, e.g. 'open()'.

As a first check, check that when 'open()' is passed 'O_CREAT' that it has
a third argument.

llvm-svn: 97086
 2010-02-25 00:20:35 +00:00
Ted Kremenek 11e899c199 Divide list of registration functions in API and foundational checks. Also trim whitespace. 
llvm-svn: 97083
 2010-02-25 00:20:25 +00:00
Ted Kremenek 43fddf77a4 Sort list of checker registration functions. 
llvm-svn: 97082
 2010-02-25 00:20:22 +00:00
Ted Kremenek 228639746a Add simpler checker to check if variables captured by a block are uninitialized. 
llvm-svn: 96341
 2010-02-16 08:33:59 +00:00
Ted Kremenek 1e3b95580c static analyzer: handle casts of a function to a function pointer with 
a different return type.  While we don't emit any errors (yet), at
least we avoid cases where we might crash because of an assertion
failure later on (when the return type differs from what is expected).

llvm-svn: 95268
 2010-02-04 00:47:48 +00:00
Ted Kremenek d6b8708643 Split libAnalysis into two libraries: libAnalysis and libChecker. 
(1) libAnalysis is a generic analysis library that can be used by
    Sema.  It defines the CFG, basic dataflow analysis primitives, and
    inexpensive flow-sensitive analyses (e.g. LiveVariables).

(2) libChecker contains the guts of the static analyzer, incuding the
    path-sensitive analysis engine and domain-specific checks.

Now any clients that want to use the frontend to build their own tools
don't need to link in the entire static analyzer.

This change exposes various obvious cleanups that can be made to the
layout of files and headers in libChecker.  More changes pending.  :)

This change also exposed a layering violation between AnalysisContext
and MemRegion.  BlockInvocationContext shouldn't explicitly know about
BlockDataRegions.  For now I've removed the BlockDataRegion* from
BlockInvocationContext (removing context-sensitivity; although this
wasn't used yet).  We need to have a better way to extend
BlockInvocationContext (and any LocationContext) to add
context-sensitivty.

llvm-svn: 94406
 2010-01-25 04:41:41 +00:00