llvm-svn: 79055

a block pointer too.

llvm-svn: 79050

llvm-svn: 79042

attaching to Objective-C methods (which mirrors GCC's behavior) and to allow the
return type of the function to be an Objective-C pointer or Block pointer (which
GCC also accepts).

Along the way, add 'const' to some of the pointer arguments of various utility
functions...

llvm-svn: 79040

implement NSCopying protocol in GC mode.

llvm-svn: 79008

llvm-svn: 78826

llvm-svn: 78760

may not implement NSCopying protocol in -fobjc-gc[-only] mode.

llvm-svn: 78726

llvm-svn: 78705

that uses "dot syntax" since it might have a side effect.

llvm-svn: 78704

the new havior is better so...

llvm-svn: 78473

on method type mismatches per Chris's comment.

llvm-svn: 78075

super class(s) and warn on any parameter
type mismatch if potentially unsafe. 

llvm-svn: 78029

llvm-svn: 77454

Fix <rdar://problem/7100524> regression: "error: incompatible operand types ('void *' and 'NSString *')".

Remove XFAIL from 'conditional-expr-4.m' test case (which would have caught this).
Also tweaked several aspects of the test to jive with the current type checking.

llvm-svn: 77453

Fix some invalid main() methods in the test suite that were nicely
exposed by the new checks.

llvm-svn: 77047

Enhance test case to cover 'isa' access on interface types (clang produces an error, GCC produces a warning).

Still need back-end CodeGen for ObjCIsaExpr.

llvm-svn: 76979

- Move Sema::ObjCQualifiedIdTypesAreCompatible(), Sema::QualifiedIdConformsQualifiedId(), and a couple helper functions to ASTContext.
- Change ASTContext::canAssignObjCInterfaces() to use ASTContext:: ObjCQualifiedIdTypesAreCompatible(). 
- Tweak several test cases to accommodate the new/improved type checking.

llvm-svn: 76830

value.  This is on by default, and controlled by -Wreturn-type (-Wmost
-Wall).  I believe there should be very few false positives, though
the most interesting case would be:

  int() { bar(); }

when bar does:

  bar() { while (1) ; }

Here, we assume functions return, unless they are marked with the
noreturn attribute.  I can envision a fixit note for functions that
never return normally that don't have a noreturn attribute to add a
noreturn attribute.

If anyone spots other false positives, let me know!

llvm-svn: 76821

llvm-svn: 76741

llvm-svn: 76709

Remove Sema::LookupObjCImplementation and replace it with just calling ObjCInterfaceDecl::getImplementation().

llvm-svn: 76509

- Introduce ASTContext::getObjCImplementation() and ASTContext::setObjCImplementation() which use a DenseMap to associate
  an interface/category with its implementation (if one exists).

- Introduce ObjCInterfaceDecl::get/setImplementation() and ObjCCategoryDecl::get/setImplementation() that use the above methods.

- Add a compiler error for when a category is reimplemented.

llvm-svn: 76508

llvm-svn: 76125

llvm-svn: 76108

nonfragile abi, instead of crashing.

llvm-svn: 76088

This is fallout from the recent ObjCObjectPointerType rework. I'll work on fixing this tomorrow.

llvm-svn: 75870

Objective-C pointers to using ObjCObjectPointerType.

Now the checking for 'attribute ((nonnull))' in Sema doesn't emit an error when
trying to apply that attribute to a parameter that is an Objective-C pointer
(this is a regression).

To prevent this regression from occuring in the future, the 'nonnull.c' test was
moved to test/SemaObjC and renamed 'nonnull.m'. I also enhanced the tests to
show that function calls involved a NULL Objective-C pointer constant does not
trigger a warning. This is consistent with GCC, but should likely be fixed.

llvm-svn: 75856

Remove cast from test case (cast was incorrectly added as part of http://llvm.org/viewvc/llvm-project?view=rev&revision=75314).

Add new warnings that are being produced.

llvm-svn: 75816

Implement the ObjC pseudo built-in types as clang "BuiltinType's". I say pseudo built-in types, since Sema still injects a typedef for recognition (i.e. they aren't truly built-ins from a parser perspective).

This removes the static data/methods on ObjCObjectPointerType while preserving the nice API (no need to fiddle with ASTContext:-).

This patch also adds Type::isObjCBuiltinType().

This should be the last fairly large patch related to recrafting the ObjC type system. The follow-on patches should be fairly small.

llvm-svn: 75808

 - These kinds of "shotgun" tests are very slow, and do not belong in the
   regression suite. If these kinds of tests are regarded to have value, they
   should be added to the LLVM test-suite.

 - I would actually like to remove all of these tests, but I left Sema/carbon.c
   and SemaObjC/cocoa.m...

llvm-svn: 75399

The idea is to segregate Objective-C "object" pointers from general C pointers (utilizing the recently added ObjCObjectPointerType). The fun starts in Sema::GetTypeForDeclarator(), where "SomeInterface *" is now represented by a single AST node (rather than a PointerType whose Pointee is an ObjCInterfaceType). Since a significant amount of code assumed ObjC object pointers where based on C pointers/structs, this patch is very tedious. It should also explain why it is hard to accomplish this in smaller, self-contained patches.

This patch does most of the "heavy lifting" related to moving from PointerType->ObjCObjectPointerType. It doesn't include all potential "cleanups". The good news is additional cleanups can be done later (some are noted in the code). This patch is so large that I didn't want to include any changes that are purely aesthetic.

By making the ObjC types truly built-in, they are much easier to work with (and require fewer "hacks"). For example, there is no need for ASTContext::isObjCIdStructType() or ASTContext::isObjCClassStructType()! We believe this change (and the follow-up cleanups) will pay dividends over time. 

Given the amount of code change, I do expect some fallout from this change (though it does pass all of the clang tests). If you notice any problems, please let us know asap! Thanks.

llvm-svn: 75314

llvm-svn: 75178

llvm-svn: 74935

C++. This logic is required to trigger implicit instantiation of
function templates and member functions of class templates, which will
be implemented separately.

This commit includes support for -Wunused-parameter, printing warnings
for named parameters that are not used within a function/Objective-C
method/block. Fixes <rdar://problem/6505209>.

llvm-svn: 73797

llvm-svn: 73519

hack which introduces some strange inconsistencies in compatibility 
for block pointers.

Note that unlike an earlier revision proposed on cfe-commits, this patch 
still allows declaring block pointers without a prototype.

llvm-svn: 73041

llvm-svn: 72737

Fixes an error recovery issue which caused a crash.

llvm-svn: 72733

llvm-svn: 72714