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(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.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94406 91177308-0d34-0410-b5e6-96231b3b80d8
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we don't need to use the DoneEvaluation hack when check for
ObjCMessageExpr.
PreVisitObjCMessageExpr() only checks for undefined receiver or arguments.
Add checker interface EvalNilReceiver(). This is a 'once-and-done' interface.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90296 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90028 91177308-0d34-0410-b5e6-96231b3b80d8
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got introduced in Mac OS X 10.5 and later, notably return values of double, float, etc., will not be garbage. Fixes <rdar://problem/6829160>.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@89809 91177308-0d34-0410-b5e6-96231b3b80d8
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initial transition of the nil-receiver checker to the Checker
interface as done in r89745. Some important changes include:
1) We consolidate the BugType object used for nil receiver bug
reports, and don't include the type of the returned value in the
BugType (which would be wrong if a nil receiver bug was reported more
than once)
2) Added a new (temporary) flag to CheckerContext: DoneEvauating.
This is used by GRExprEngine when evaluating message expressions to
not continue evaluating the message expression if this flag is set.
This flag is currently set by the nil receiver checker. This is an
intermediate solution to allow the nil-receiver checker to properly
work as a plug-in outside of GRExprEngine. Basically, this flag
indicates that the entire message expression has been evaluated, not
just a precondition (which is what the nil-receiver checker does).
This flag *should not* be repurposed for general use, but just to pull
more things out of GRExprEngine that already in there as we devise a
better interface in the Checker class.
3) Cleaned up the logic in the nil-receiver checker, making the
control-flow a lot easier to read.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@89804 91177308-0d34-0410-b5e6-96231b3b80d8
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CallAndMessageChecker.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@89745 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@89735 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@89734 91177308-0d34-0410-b5e6-96231b3b80d8
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