AnalysisBasedWarnings Sema layer and out of the Analysis library itself.
This returns the uninitialized values analysis to a more pure form,
allowing its original logic to correctly detect some categories of
definitely uninitialized values. Fixes PR10358 (again).

Thanks to Ted for reviewing and updating this patch after his rewrite of
several portions of this analysis.

llvm-svn: 135748

where it belongs.

llvm-svn: 135746

methods, including indirectly overridden methods like those
declared in protocols and categories.  There are mismatches
that we would like to diagnose but aren't yet, but this   
is fine for now.

I looked at approaches that avoided doing this lookup 
unless we needed it, but the infer-related-result-type
checks were doing it anyway, so I left it with the same
fast-path check for no previous declartions of that 
selector.

llvm-svn: 135743

This was previously not-const only because it has to lazily construct a chain
of ivars the first time it is called (and after the chain is invalidated).
In practice, all the clients were just const_casting their const Decls;
all those now-unnecessary const_casts have been removed.

llvm-svn: 135741

objective-c: Any use of @synthesize or @dynamic lexically after a method (or C function) implementation 
will be rejected with a compilation error in ARC mode, and a compiler warning otherwise.
This may cause breakage in non-arc (and arc) tests which don't expect warning/error. Feel free
to fix the tests, or reverse the patch, if I am unavailable. // rdar://9818354 - WIP

llvm-svn: 135740

// rdar://9615045

llvm-svn: 135685

a warning flag. // rdar://9615045

llvm-svn: 135681

llvm-svn: 135668

llvm-svn: 135666

Remove warning for conditional operands of differend signedness from -Wsign-compare.  Cases that previously warn on this will have a different warning emitted from -Wsign-conversion.

llvm-svn: 135664

Connor Wakamo!

llvm-svn: 135651

access specifier as public.

llvm-svn: 135649

Addressing code review comments for commit 135509 - Add FixItHints in case a C++ function call is missing * or & operators on

llvm-svn: 135643

// pr10411

llvm-svn: 135638

fails because of lifetime differences of parameter and argument type.
// rdar://9790531

llvm-svn: 135593

some common llvm types: stringref and smallvector.  This cleans up the codebase
quite a bit.

llvm-svn: 135576

llvm-svn: 135543

Add FixItHints in case a C++ function call is missing * or & operators on one/several of it's parameters (addresses http://llvm.org/PR5941).

llvm-svn: 135509

This is accomplished by forcing the needed expressions for -Wuninitialized to always be CFGElements in the CFG.
This allows us to remove a fair amount of the code for -Wuninitialized.

Some fallout:
- AnalysisBasedWarnings.cpp now specifically toggles the CFGBuilder to create a CFG that is suitable for -Wuninitialized.  This
is a layering violation, since the logic for -Wuninitialized is in libAnalysis.  This can be fixed with the proper refactoring.
- Some of the source locations for -Wunreachable-code warnings have shifted.  While not ideal, this is okay because that analysis
already needs some serious reworking.

llvm-svn: 135480

ShadowMapEntry was.

llvm-svn: 135368

Zero this struct in a way that neither depends on the size of the struct nor triggers warnings from GCC.

llvm-svn: 135351

llvm-svn: 135348

llvm-svn: 135328

Test cases provided by Anton Lokhmot.

llvm-svn: 135322

convertToInt(integerParts*) and make them more reliable.

llvm-svn: 135279

llvm-svn: 135275

attributes. Fixes <rdar://problem/9561076>.

llvm-svn: 135273

which is required given the current setup for template
argument deduction substitution validation, and add a test
case to make sure we don't break it in the future.

llvm-svn: 135262

to represent a fully-substituted non-type template parameter.
This should improve source fidelity, as well as being generically
useful for diagnostics and such.

llvm-svn: 135243

Remove warnings of constant operands of logical operators from template instantiations.  Upon instantiation of template, value-dependent parameters are replaced by equivalent literals, so code like:

template<unsigned int A, unsigned int B> struct S {
  int foo() {
    int x = A && B;
  }
}

will not warn on A && B on every instantiation.  This will still warn on other cases inside templates, which will be caught on checking the template definition.

llvm-svn: 135222

Revert "For C++11, do more checking of initializer lists up-front, enabling some subset of the final functionality. C just leaves the function early. C++98 runs through the same code path, but has no changed functionality either."

This reverts commit ac420c5053d6aa41d59f782caad9e46e5baaf2c2.

llvm-svn: 135210

llvm-svn: 135208

For C++11, do more checking of initializer lists up-front, enabling some subset of the final functionality. C just leaves the function early. C++98 runs through the same code path, but has no changed functionality either.
This is a first baby step towards supporting generalized initializer lists. This also removes an aggregate
test case that was just plain wrong, assuming that non-aggregates couldn't be initialized with initializer lists
in C++11 mode.

llvm-svn: 135177

llvm-svn: 135175

is still terrible here because typo correction is not behaving well in
the presence of overloaded functions.

llvm-svn: 135128

PR8800: When building a conversion to A& using a member operatorA&(), do not require A to be a complete type.

llvm-svn: 135101

parsing lambda expressions, from John Freeman!

llvm-svn: 135090

Uhrain! Fixes PR10318.

llvm-svn: 135086

it as used.  Otherwise, we can fail to instantiate or validate the destructor,
which can lead to crashes in IR gen like PR10351.

llvm-svn: 135073

used in @selector expression because, well, their implementation 
is optional. // rdar://9545564

llvm-svn: 135057