Implicitly defined functions were getting the DeclContext of the function where they appeared, causing the bug: http://llvm.org/bugs/show_bug.cgi?id=2266.
Fix it by making implicitly defined functions get the DeclContext of translation unit.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50538 91177308-0d34-0410-b5e6-96231b3b80d8

Added temporary fix for Obj-C exception handling in the static analyzer: treat these as panic functions.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50535 91177308-0d34-0410-b5e6-96231b3b80d8

Added default ctor to Selector.

REASON: Without a default ctor we cannot do "new Selector[xxx]" and similar
operations with ADTs that need to default constructor selectors.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50534 91177308-0d34-0410-b5e6-96231b3b80d8

Renamed static method.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50533 91177308-0d34-0410-b5e6-96231b3b80d8

Patch to match and issue diagnostics on property type mismatch.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50532 91177308-0d34-0410-b5e6-96231b3b80d8

Added __assert_rtn to list of panic functions.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50530 91177308-0d34-0410-b5e6-96231b3b80d8

Use pointer swizziling to unify in ObjCMessageExpr the receiver and classname "fields".  This saves us a pointer.
Implemented serialization for ObjCMessageExpr.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50528 91177308-0d34-0410-b5e6-96231b3b80d8

Added ziperr as a panic function.  Eventually inter-procedural analysis
should catch this one easily.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50526 91177308-0d34-0410-b5e6-96231b3b80d8

Added comments to ObjCMessageExpr.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50525 91177308-0d34-0410-b5e6-96231b3b80d8

When processing "release", "retain", and "autorelease" messages return the
lval passed as an argument.

Fix: Inverted diagnostic messages.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50513 91177308-0d34-0410-b5e6-96231b3b80d8

Added support for "autorelease" message in CF ref. count checker.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50512 91177308-0d34-0410-b5e6-96231b3b80d8

Extend InitListExpr API/IMPL to support arbitrary add/remove (in support of the initializer rewrite I am doing).

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50511 91177308-0d34-0410-b5e6-96231b3b80d8

More ObjC2 property semantics work. Work in progress.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50508 91177308-0d34-0410-b5e6-96231b3b80d8

added preliminary diagnostics in scan-build results to denote whether
a CF memory leak occurred with GC enabled, etc.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50507 91177308-0d34-0410-b5e6-96231b3b80d8

scan-build: Disable distributed builds for xcodebuild

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50506 91177308-0d34-0410-b5e6-96231b3b80d8

More cleanups with ObjCQualifiedIdType in the static analyzer.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50503 91177308-0d34-0410-b5e6-96231b3b80d8

Add placeholder code in the static analyzer for MemberExprs involving struct temporaries.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50502 91177308-0d34-0410-b5e6-96231b3b80d8

Add workaround for __builtin_offsetof in the static analyzer.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50500 91177308-0d34-0410-b5e6-96231b3b80d8

Provide SizeOfAlignTypeExpr workaround in the static analyzer for taking the sizeof of a ObjCInterfaceType.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50499 91177308-0d34-0410-b5e6-96231b3b80d8

Support implicit casts from pointers to references.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50498 91177308-0d34-0410-b5e6-96231b3b80d8

When creating LVals for array entries, canonicalize entries with a 0 index.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50497 91177308-0d34-0410-b5e6-96231b3b80d8

Teach more of the static analyzer about ObjCQualifiedIdType.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50494 91177308-0d34-0410-b5e6-96231b3b80d8

Teach the static analysis engine about ObjCQualifiedIdType.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50493 91177308-0d34-0410-b5e6-96231b3b80d8

Add conjured symbols for decl initializations.
Add db_error as panic function.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50489 91177308-0d34-0410-b5e6-96231b3b80d8

Handle lval::ArrayOffset and lval::FieldOffset in EvalNE and EvalEQ.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50486 91177308-0d34-0410-b5e6-96231b3b80d8

Verify the whole module after codegen to catch silly IR bugs.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50485 91177308-0d34-0410-b5e6-96231b3b80d8

fix 'var unused' warning.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50484 91177308-0d34-0410-b5e6-96231b3b80d8

Added test case for the static analyzer.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50467 91177308-0d34-0410-b5e6-96231b3b80d8

Invalidate old subexpression bindings when binding UnknownVal.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50466 91177308-0d34-0410-b5e6-96231b3b80d8

Simplify RemoveDeadBindings.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50458 91177308-0d34-0410-b5e6-96231b3b80d8

Added test case to test null dereference checking with lval::ArrayOffset.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50454 91177308-0d34-0410-b5e6-96231b3b80d8

Add lval::ArrayOffset, which represent the locations of entries in an array.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50453 91177308-0d34-0410-b5e6-96231b3b80d8

Default visbility for instance variables is protected.
Patch by Emerson Murhpy-Hill.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50452 91177308-0d34-0410-b5e6-96231b3b80d8

Added lval::FieldOffset, which represents symbolic lvalues for field offsets from other Lvalues.
This removes the failure in null-deref-ps.c (test suite).

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50449 91177308-0d34-0410-b5e6-96231b3b80d8

Major rewrite/refactoring of static analysis engine. We now use
EvalStore/EvalLoad to handle all loads/stores from symbolic memory, allowing us
to do checks for null dereferences, etc., at any arbitrary load/store (these
were missed checks before). This also resulted in some major cleanups, some
conceptual, and others just in the structure of the code.

This temporarily introduces a regression in the test suite (null-deref-ps.c)
before I add a new LVal type for structure fields.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50443 91177308-0d34-0410-b5e6-96231b3b80d8

Pass fobjc-gc-only and fobjc-gc options down to clang.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50426 91177308-0d34-0410-b5e6-96231b3b80d8

Update typestate logic to support GC-mode.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50396 91177308-0d34-0410-b5e6-96231b3b80d8

Implement semantics of CFMakeCollectable for the CF-reference count checker.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50395 91177308-0d34-0410-b5e6-96231b3b80d8

Provide the option to run the CF-retain checker in GC enabled mode.
The transfer functions for the checker don't do anything special yet in GC mode.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50394 91177308-0d34-0410-b5e6-96231b3b80d8

Convert CFLF to LF.  CRLF was causing this test to fail under Mac OS X.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50388 91177308-0d34-0410-b5e6-96231b3b80d8

Add -fobjc-gc and -fobjc-gc-only options to the driver.
Add corresponding enum in LangOptions.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50387 91177308-0d34-0410-b5e6-96231b3b80d8

Bug fix in CFG::getBlockEdgeImpl(): Use a BumpPtrAllocator to allocate
std::pair<CFGBlock*, CFGBlock*> that have an 8-byte alignment for use with
ProgramPoint. This fixes a bug reported by Argiris where using std::set<> on
Windows would result in a 4-byte alignment, not an 8-byte alignment.

Fixes: <rdar://problem/5892265>
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50364 91177308-0d34-0410-b5e6-96231b3b80d8

Call ExitScope before ActOnFinishNamespaceDef.
This is the same for functions and it's preferable to have the namespace as DeclContext during ActOnPopScope.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50322 91177308-0d34-0410-b5e6-96231b3b80d8

Parsing of namespaces:

-NamespaceDecl for the AST
-Checks for name clashes between namespaces and tag/normal declarations.

This commit doesn't implement proper name lookup for namespaces.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50321 91177308-0d34-0410-b5e6-96231b3b80d8

Use PushOnScopeChains to introduce a decl into scope.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50320 91177308-0d34-0410-b5e6-96231b3b80d8

Make assertions for all addresses passed to ProgramPoint that they have at least an 8-byte alignment.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50310 91177308-0d34-0410-b5e6-96231b3b80d8

Pass down more -iXXX options that clang supports

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50304 91177308-0d34-0410-b5e6-96231b3b80d8

fix broken tag

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50299 91177308-0d34-0410-b5e6-96231b3b80d8

Another link fix.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50298 91177308-0d34-0410-b5e6-96231b3b80d8

Fix links.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50297 91177308-0d34-0410-b5e6-96231b3b80d8

Fix bug in BugReporter where we didn't handle emitting diagnostics for
empty CFGBlocks that only contained a terminator.

Added improved diagnostics for break and continue statements and default branches in switch statements.

This fixes <rdar://problem/5889244>.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50286 91177308-0d34-0410-b5e6-96231b3b80d8

Added some notes about the LLVM "checker".  This isn't a public link yet; still refining.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50283 91177308-0d34-0410-b5e6-96231b3b80d8

remove the 'unused static' diagnostic from codegen.  This should be
reimplemented in Sema someday.  This is tracked in PR2236.  Until then
disabling it removes some bogus diagnostics (see 2236).

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50263 91177308-0d34-0410-b5e6-96231b3b80d8

initial support for recognizing __transparent_union__ attributes
comments on the ML will follow

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50262 91177308-0d34-0410-b5e6-96231b3b80d8

Handle dereferences of function pointers (which return a handle to the function).

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50246 91177308-0d34-0410-b5e6-96231b3b80d8

Don't abort on GetRVal when the LVal is a StringLiteralVal.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50245 91177308-0d34-0410-b5e6-96231b3b80d8

Don't emit empty strings for path diagnostics when taking the default branch of a switch statement that has no label.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50242 91177308-0d34-0410-b5e6-96231b3b80d8

Do a better job at computing dead symbols.

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.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50241 91177308-0d34-0410-b5e6-96231b3b80d8

Add preliminary support for flagging leaks around when they happen (doesn't work yet).

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50237 91177308-0d34-0410-b5e6-96231b3b80d8

Better handling for directory names in HTML diagnostics.  Work in progress.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50234 91177308-0d34-0410-b5e6-96231b3b80d8

More boilerplate for handling specialized-transfer function logic for dead symbols.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50233 91177308-0d34-0410-b5e6-96231b3b80d8

Patch to diagnose inconsistancies between properties declared in current and
its super class. This patch is incomplete.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50228 91177308-0d34-0410-b5e6-96231b3b80d8

Added initial boilerplate in GRExprEngine to allow checker-specific transfer
function logic to act when symbols become dead.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50221 91177308-0d34-0410-b5e6-96231b3b80d8

Added uninitialized-values (path-sensitive) test case as a regression test
for the fix in r50178 (http://llvm.org/viewvc/llvm-project?rev=50178&view=rev).
This fix was for <rdar://problem/5881148>.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50220 91177308-0d34-0410-b5e6-96231b3b80d8

Added test case for functionality fix in rdar://problem/5886141 (handle variadic CF Create functions).

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50219 91177308-0d34-0410-b5e6-96231b3b80d8

CF reference count checker: handle variadic functions that allocate CF objects.
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.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50214 91177308-0d34-0410-b5e6-96231b3b80d8

Have ValidateOutputConstraint return false instead of firing an assertion
when processing a constraint we don't understand.  This allows the frontend
to gracefully fail.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50213 91177308-0d34-0410-b5e6-96231b3b80d8

For case statements involving enums, BugReporter now generates PathDiagnostics
that say that we are jumping to "case a" instead of "case 0".

This is a feature implementation for <rdar://problem/5880430>.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50197 91177308-0d34-0410-b5e6-96231b3b80d8

Fix minor regression in bug report generation.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50195 91177308-0d34-0410-b5e6-96231b3b80d8

When building PathDiagnostics for bug reports, generate a trimmed ExplodedGraph with a single path that BugReport objects can safely walk and introspect.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50194 91177308-0d34-0410-b5e6-96231b3b80d8

Fixed: <rdar://problem/5881148>

Problem:

In the recently refactored VisitDeref (which processes dereferences), we
were incorrectly skipping the node just generated for the subexpression
of the dereference.  This was a horrible regression.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50176 91177308-0d34-0410-b5e6-96231b3b80d8

TranslationUnit now owns IdentifierTable, TargetInfo, and Selectors objects
when it is constructed via deserialization.  This is done by recording a flag
indicating that this is the case, and it deletes these objects by getting
the references stored in the ASTContext object.  This fixes some memory
leaks that occurs when we deserialize translation units from bitcode files.

The rationale between having TranslationUnit sometimes own these objects and
sometimes not is that a TranslationUnit object can be constructed from
state generated by the parser (Preprocessor; semantic analyzer, etc.), and thus
in these cases won't own the IdentifierTable or Selectors, etc.  During
deserialization, there is no Preprocessor, so somebody needs to own these
objects in order for them to be properly reclaimed.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50149 91177308-0d34-0410-b5e6-96231b3b80d8

Remove false path where the default branch in a switch statement would
always be taken even if it was not feasible.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50132 91177308-0d34-0410-b5e6-96231b3b80d8

fix a rewriter crash on zero length files.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50126 91177308-0d34-0410-b5e6-96231b3b80d8

Added panic function "assfail".

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50119 91177308-0d34-0410-b5e6-96231b3b80d8

Patch to build AST for property implementation declarations and
to print declaration from its AST.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50117 91177308-0d34-0410-b5e6-96231b3b80d8

For default branches in switch statements with no default label, print out
the line we are going to.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50113 91177308-0d34-0410-b5e6-96231b3b80d8

Rewrote VisitDeclStmt to properly handle initializers that can do anything.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50112 91177308-0d34-0410-b5e6-96231b3b80d8

Added lval type (and tracking) for StringLiterals.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50109 91177308-0d34-0410-b5e6-96231b3b80d8

Added "nonlval::LValAsInteger" to represent abstract LVals casted to integers, allowing us to track lvals when they are casted back to pointers.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50108 91177308-0d34-0410-b5e6-96231b3b80d8

"This patch renames

DeclContext *CtxDecl -> DeclContext *DeclCtx
DeclContext *CD -> DeclContext *DC

It makes the code more consistent."

Patch by Zhongxing Xu!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50105 91177308-0d34-0410-b5e6-96231b3b80d8

PathDiagnosticClients now retain ownership of passed PathDiagnostics, requiring
them to not be stack-allocated.

HTMLDiagnostics now batches PathDiagnostics before emitting HTML in its dtor.
This is a workaround for a problem when we trampled the Preprocessor state
when highlighting macros (sometimes resulting in an assertion failure).

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50102 91177308-0d34-0410-b5e6-96231b3b80d8

Use back() instead of end()-1

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50098 91177308-0d34-0410-b5e6-96231b3b80d8

Added panic function "dtrace_assfail".

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50091 91177308-0d34-0410-b5e6-96231b3b80d8

Add VisitArraySubscriptExpr.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50090 91177308-0d34-0410-b5e6-96231b3b80d8

Hardcode "Assert" as a no-return function (panic).

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50089 91177308-0d34-0410-b5e6-96231b3b80d8

Add some basic ARM asm constraints

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50085 91177308-0d34-0410-b5e6-96231b3b80d8

Added null dereference test involving arrays.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50084 91177308-0d34-0410-b5e6-96231b3b80d8

Added null-dereference check for ArraySubscriptExpr.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50083 91177308-0d34-0410-b5e6-96231b3b80d8

Don't double-increment counter for -arch and -isysroot

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50082 91177308-0d34-0410-b5e6-96231b3b80d8

Allow property in base class to be implemented in a
derived class.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50074 91177308-0d34-0410-b5e6-96231b3b80d8

Added missing expected-warning.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50073 91177308-0d34-0410-b5e6-96231b3b80d8

Added null dereference test case looking for null dereferences involving MemberExpr.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50072 91177308-0d34-0410-b5e6-96231b3b80d8

Added support for detected bad dereferences involving MemberExprs, e.g. x->f where "x" is NULL.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50071 91177308-0d34-0410-b5e6-96231b3b80d8

Remove unused "verbose" argument to compile().  Also unbreaks ccc-analyzer.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50066 91177308-0d34-0410-b5e6-96231b3b80d8

More semantics checks of properties. Property implementation can implicitly use
ivar of same name.
Better diagnostics to bring home this point.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50065 91177308-0d34-0410-b5e6-96231b3b80d8

Support for @dynamic AST build.
More property semantics checking.
First test case for ObjC2's property implementation.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50057 91177308-0d34-0410-b5e6-96231b3b80d8

Pass "-arch" down to clang.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50056 91177308-0d34-0410-b5e6-96231b3b80d8

Fix pasto, thanks to Anders for pointing this out.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50055 91177308-0d34-0410-b5e6-96231b3b80d8

Continuation of work on ObjC2's properties.
Added iterators, methods to find property and categories.
Use them in doing semantic analysis on property implementation
declarations. Fixed typos.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50050 91177308-0d34-0410-b5e6-96231b3b80d8