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2009-07-25Semantic checking for main().John McCall
Fix some invalid main() methods in the test suite that were nicely exposed by the new checks. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77047 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-24Allow front-end 'isa' access on object's of type 'id'.Steve Naroff
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. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76979 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-23Remove a bunch of FIXME's related to ObjC type checking.Steve Naroff
- 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. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76830 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-22Add warning for falling off the end of a function that should return aMike Stump
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! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76821 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-22Fix <rdar://problem/6770276> Support Class<Proto> syntax.Steve Naroff
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76741 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-22Prep for new warning.Mike Stump
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76709 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-21Remove Sema::LookupObjCImplementation and replace it with just calling ↵Argyrios Kyrtzidis
ObjCInterfaceDecl::getImplementation(). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76509 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-21- Introduce ASTContext::getObjCImplementation() and ↵Argyrios Kyrtzidis
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. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76508 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-16Some more ?: for Obj-C tests.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76125 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-16Add more testing of ?: for Obj-C object types.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76108 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-16Diagnose ++/-- op on objc pointers inFariborz Jahanian
nonfragile abi, instead of crashing. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76088 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-16Avoid crashing for the enclosed test case.Steve Naroff
This is fallout from the recent ObjCObjectPointerType rework. I'll work on fixing this tomorrow. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@75870 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-15Handle some more fallout with the conversion of using PointerType forTed Kremenek
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. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@75856 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-15Remove cast from test case (cast was incorrectly added as part of ↵Steve Naroff
http://llvm.org/viewvc/llvm-project?view=rev&revision=75314). Add new warnings that are being produced. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@75816 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-15Implement the ObjC pseudo built-in types as clang "BuiltinType's". I say ↵Steve Naroff
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. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@75808 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-11Remove excessive use of Carbon.h / Cocoa.h in clang tests.Daniel Dunbar
- 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... git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@75399 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-10This patch includes a conceptually simple, but very intrusive/pervasive change. Steve Naroff
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. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@75314 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-09don't crash if class is using itself as its super class.Fariborz Jahanian
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@75178 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-07Diagnose, and not crash, when taking address of property expression.Fariborz Jahanian
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74935 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-19Keep track of when declarations are "used" according to C andDouglas Gregor
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>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73797 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-16Test case was left behind from my last patch.Fariborz Jahanian
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73519 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-08Don't allow defining a block with a non-prototype type. Remove a Eli Friedman
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. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73041 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-02Diagnose misuse of __strong attribute in a redeclaration.Fariborz Jahanian
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72737 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-02Issue diagnostics on __weak attribute mismatch.Fariborz Jahanian
Fixes an error recovery issue which caused a crash. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72733 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-02Remove test which doesn't pass with gcc.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72714 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-02This patch attempts to fix the merging of __strong/__weak attributesFariborz Jahanian
in merge_types. It is incomplete. We probably want to issue a warning if user attempts to change the attribute from __weak to __strong or vice-vera. It also assumes that a __weak/__strong attribute can not be specified with other (currently one) type attriute. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72711 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-01Update test case.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72694 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-01Disable type merging with gc attributes. This has a number of nasty Eli Friedman
properties at the moment: 1. It allows stuff like "__strong id x; __weak id x;". 2. For constructs like "__strong id x; id x;", subsequent references to x lose the objc_gc attribute. 3. This incorrectly allows merges involving the address_space attribute. 4. Constructs like "id x; /* some code using x */ __weak id x;" don't apply the objc_gc attribute consistently to all uses of x. The first three can probably be fixed relatively easily; the fourth would be extremely difficult to fix. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72683 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-22Cannot type cast @selector expressions.Fariborz Jahanian
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72284 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-22Added -fblocks to the test's options.Fariborz Jahanian
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72274 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-22(Next runtime only) check to see if class implements forwardInvocation method Fariborz Jahanian
and objects of this class are derived from 'NSProxy'. Under such conditions, which means that every method possible is implemented in the class, we should not issue "Method definition not found" warnings. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72267 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-21Fixed a warning bug when receiver is an object viaFariborz Jahanian
setting of NSObject attribute. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72225 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-20implementation of format_arg for ObjC methods/functions.Fariborz Jahanian
Still more to do. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72173 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-19Remove the -arch option from clang-cc: for all practical purposes, it's Eli Friedman
redundant with -triple. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72108 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-14Don't warn if result/argument type of an implemented Fariborz Jahanian
method is a qualified id which conforms to the matching type of its method declaration. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71817 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-13Look for and diagnose missing sentinel argument on messageFariborz Jahanian
dispatch arguments which have sentinel attribute. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71737 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-13Changed wording of warning when attribute is onFariborz Jahanian
method definition. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71615 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-12Method attributes may only be specified on methodFariborz Jahanian
declarations. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71597 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-08We want to diagnose sending message to a forward classFariborz Jahanian
and we also want to tell which message is actually being sent. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71296 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-08Warn if forward class is used as a receiver.Fariborz Jahanian
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71278 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-08Fixes a bug in my last patch. Order of types reversed.Fariborz Jahanian
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71267 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-08More type checking for properties, accessors andFariborz Jahanian
use of dot-syntax expression. This is to match gcc's. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71243 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-07Add a warning for a missing copy attribute on a property that is aMike Stump
block pointer. Radar 6441502 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71190 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-07a forward class declaration matching a typedef name of a classFariborz Jahanian
refers to the underlying class. This is radar 6859726. Steve, please read the radar for my rational. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71181 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-07Improve semantic checking for blocks. Radar 6441502Mike Stump
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71145 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-06Improve handling of (X86) target features.Daniel Dunbar
- This is a WIP... - This adds -march= handling to the driver, and fixes the defaulting of -mcpu on Darwin (which was using the wrong test). Instead of handling -m{sse, ...} in the driver, pass them to clang-cc as -target-feature [+-]name In clang-cc, communicate with the (clang) target to discover the legal features of a target, and the features which are enabled based on -mcpu. This is currently hardcoded just enough to not be a feature regression, we need to get this information from the backend's TableGen information somehow. This is used to construct the full list of features which are being used, which is in turn used to initialize the predefines. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71061 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-05Issue a warning in odd case of instance method usedFariborz Jahanian
in a 'Class' receiver which is not a root instance method. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70987 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-04ignore weak_import attribute on objc method decls.Fariborz Jahanian
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70901 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-03Fix invalid error about duplicate declaration of padding bit field inDaniel Dunbar
an interface. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70652 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-01Check for method type conflict between declaration inFariborz Jahanian
class/protocol and implementation which could be an imm. implementation or down in the inheritance hierarchy. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70568 91177308-0d34-0410-b5e6-96231b3b80d8
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