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2009-03-25Predicate to detect when a RecordDecl is really the injected-class-nameDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67687 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-24Make sure to use RequireCompleteType rather than testing forDouglas Gregor
incomplete types. RequireCompleteType is needed when the type may be completed by instantiating a template. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67643 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-24More work on diagnosing abstract classes. We can now handle cases likeAnders Carlsson
class C { void g(C c); virtual void f() = 0; }; In this case, C is not known to be abstract when doing semantic analysis on g. This is done by recursively traversing the abstract class and checking the types of member functions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67594 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-23Template instantiation for the declarations of member functions withinDouglas Gregor
a class template. At present, we can only instantiation normal methods, but not constructors, destructors, or conversion operators. As ever, this contains a bit of refactoring in Sema's type-checking. In particular: - Split ActOnFunctionDeclarator into ActOnFunctionDeclarator (handling the declarator itself) and CheckFunctionDeclaration (checking for the the function declaration), the latter of which is also used by template instantiation. - We were performing the adjustment of function parameter types in three places; collect those into a single new routine. - When the type of a parameter is adjusted, allocate an OriginalParmVarDecl to keep track of the type as it was written. - Eliminate a redundant check for out-of-line declarations of member functions; hide more C++-specific checks on function declarations behind if(getLangOptions().CPlusPlus). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67575 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-23More improvements to abstract type checking. Handle arrays correctly, and ↵Anders Carlsson
make sure to check parameter types before they decay. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67550 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-23It's an error to try to allocate an abstract object using new.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67542 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-23Fix PR3855. When we encounter an incompatible redeclaration of aDouglas Gregor
library function, accept this declaration and pretend that we do not know that this is a library function. autoconf depends on this (broken) behavior. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67541 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-23Tighten up the determination of whether a function declaration has aDouglas Gregor
prototype. Thanks Eli! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67533 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-23Thanks to Eli for pointing out my misreading of 6.2.2p5Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67530 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-22Disallow abstract types where appropriate.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67476 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-22Keep track of whether a class is abstract or not. This is currently only ↵Anders Carlsson
used for the __is_abstract type trait. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67461 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-19Variables marked as "extern" can actually have internal linkage ifDouglas Gregor
there is a previous declaration marked "static". This fixes PR3645. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67336 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-19Add a clarifying comment about HasPrototype's computationDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67316 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-19If a function is declared as, e.g.,Douglas Gregor
F f; where F is a typedef of a function type, then the function "f" has a prototype. This is a slight tweak to Chris's suggested fix in PR3817. Fixes PR3817 and PR3840. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67313 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-19Introduce a new expression type, UnresolvedDeclRefExpr, that describesDouglas Gregor
dependent qualified-ids such as Fibonacci<N - 1>::value where N is a template parameter. These references are "unresolved" because the name is dependent and, therefore, cannot be resolved to a declaration node (as we would do for a DeclRefExpr or QualifiedDeclRefExpr). UnresolvedDeclRefExprs instantiate to DeclRefExprs, QualifiedDeclRefExprs, etc. Also, be a bit more careful about keeping only a single set of specializations for a class template, and instantiating from the definition of that template rather than a previous declaration. In general, we need a better solution for this for all TagDecls, because it's too easy to accidentally look at a declaration that isn't the definition. We can now process a simple Fibonacci computation described as a template metaprogram. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67308 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-19Extend the use of QualifiedNameType to the creation of class templateDouglas Gregor
specialization names. This way, we keep track of sugared types like std::vector<Real> I believe we are now using QualifiedNameTypes everywhere we can. Next step: QualifiedDeclRefExprs. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67268 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-19Introduce a representation for types that we referred to via aDouglas Gregor
qualified name, e.g., foo::x so that we retain the nested-name-specifier as written in the source code and can reproduce that qualified name when printing the types back (e.g., in diagnostics). This is PR3493, which won't be complete until finished the other tasks mentioned near the end of this commit. The parser's representation of nested-name-specifiers, CXXScopeSpec, is now a bit fatter, because it needs to contain the scopes that precede each '::' and keep track of whether the global scoping operator '::' was at the beginning. For example, we need to keep track of the leading '::', 'foo', and 'bar' in ::foo::bar::x The Action's CXXScopeTy * is no longer a DeclContext *. It's now the opaque version of the new NestedNameSpecifier, which contains a single component of a nested-name-specifier (either a DeclContext * or a Type *, bitmangled). The new sugar type QualifiedNameType composes a sequence of NestedNameSpecifiers with a representation of the type we're actually referring to. At present, we only build QualifiedNameType nodes within Sema::getTypeName. This will be extended to other type-constructing actions (e.g., ActOnClassTemplateId). Also on the way: QualifiedDeclRefExprs will also store a sequence of NestedNameSpecifiers, so that we can print out the property nested-name-specifier. I expect to also use this for handling dependent names like Fibonacci<I - 1>::value. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67265 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-18The scope representation can now be either a DeclContext pointer or aDouglas Gregor
Type pointer. This allows our nested-name-specifiers to retain more information about the actual spelling (e.g., which typedef did the user name, or what exact template arguments were used in the template-id?). It will also allow us to have dependent nested-name-specifiers that don't map to any DeclContext. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67140 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-17pull a nested conditional + comment out into its own variable,Chris Lattner
no functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67128 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-17Implement instantiation of enums within class templates. This isn'tDouglas Gregor
quite as great as it sounds, because, while we can refer to the enumerator values outside the template, e.g., adder<long, 3, 4>::value we can't yet refer to them with dependent names, so no Fibonacci (yet). InstantiateClassTemplateSpecialization is getting messy; next commit will put it into a less-ugly state. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67092 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-16Check signedness of bitfield sizes.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67045 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-13Remove ActiveScope (revert ↵Steve Naroff
http://llvm.org/viewvc/llvm-project?view=rev&revision=65694 and http://llvm.org/viewvc/llvm-project?view=rev&revision=66741). Will replace with something better today... git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66893 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-12Implement template instantiation for builtin binary operatorsDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66835 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-12API fix: All "bodies" for functions, Objective-C methods, blocks, are assumed toTed Kremenek
be CompoundStmts. I think this is a valid assumption, and felt that the API should reflect it. Others please validate this assumption to make sure I didn't break anything. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66814 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-11Fix various problems with matching out-of-line definitions of staticDouglas Gregor
class members to the corresponding in-class declaration. Diagnose the erroneous use of 'static' on out-of-line definitions of class members. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66740 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-11Move most of the checking from ActOnCXXMemberDeclarator to other, more ↵Douglas Gregor
general routines. This is a step toward separating the checking logic from Declarators, which in turn is required for template instantiation. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66734 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-11Make sure that we set the access specifier for an instantiated FieldDecl, ↵Douglas Gregor
and that the aggregate and POD flags for an instantiated class template are updated based on instantiation of a FieldDecl git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66701 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-11Eliminate CXXClassVarDecl. It doesn't add anythingDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66696 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-11Implement basic template instantiation for fields. Reshuffle checkingDouglas Gregor
for FieldDecls so that the parser and the template instantiation make use of the same semantic checking module. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66685 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-11Add basic, hackish support for instantiation of typedefs in a classDouglas Gregor
template. More importantly, start to sort out the issues regarding complete types and nested-name-specifiers, especially the question of: when do we instantiate a class template specialization that occurs to the left of a '::' in a nested-name-specifier? git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66662 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-10Add type checking for tentative definitions at the end of theDouglas Gregor
translation unit. Thread the various declarations of variables via VarDecl::getPreviousDeclaration. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66601 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-10Partial fix for PR3310, concerning type-checking for tentativeDouglas Gregor
definitions. We were rejecting tentative definitions of incomplete (which is bad), and now we don't. This fix is partial because we don't do the end-of-translation-unit initialization for tentative definitions that don't ever have any initializers specified. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66584 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-10Address Doug's comments wrt the mangler and fix Eli's test caseAnders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66549 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-09Rename DiagnoseIncompleteType to RequireCompleteType, and update the ↵Douglas Gregor
documentation to reflect the fact that we can instantiate templates here git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66421 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-06Downgrade complaints about the use of variable-sized types within aDouglas Gregor
struct to an extension warning to match the behavior of GNU C, which addresses the Sema part of PR3671. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66308 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-06Use the 'declaration does not declare anything' error when we see an ↵Douglas Gregor
anonymous struct/union declaration outside of a struct or union in C git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66303 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-06Implement GNU C semantics for K&R function definitions that follow aDouglas Gregor
prototype of the same function, where the promoted parameter types in the K&R definition are not compatible with the types in the prototype. Fixes PR2821. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66301 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-06Improve recovery from ill-formed scope specifiers. Fixes PR3670.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66286 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-06Implement the GNU semantics for forward declarations of enum types inDouglas Gregor
C and C++. Fixes PR3688. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66282 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-05refactor C++ bitfield checking a bit (haha)Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66213 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-05fix PR3607 and a fixme, by checking bitfield constraintsChris Lattner
more consistently. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66210 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-05When parsing a function body, add it to the crash stack, giving us somethingChris Lattner
like: Stack dump: 0. t.c:5:10: in compound statement ('{}') 1. t.c:3:12: in compound statement ('{}') 2. t.c:3:12: parsing function body 'foo' 3. clang t.c Abort git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66118 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-04Check that the return type for function definitions is complete.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66027 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-04Switch attributes to be allocated from the declcontext bump pointer just likeChris Lattner
decls. This reduces the number of calls to malloc on cocoa.h with pth and -disable-free from 15958 to 12444 times (down ~3500). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66023 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-04add an a Attr::Destroy method and force clients to go through it. As part of Chris Lattner
this, make DeclBase::Destroy destroy attributes instead of the DeclBase dtor. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66020 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-03Implement the basics of implicit instantiation of class templates, inDouglas Gregor
response to attempts to diagnose an "incomplete" type. This will force us to use DiagnoseIncompleteType more regularly (rather than looking at isIncompleteType), but that's also a good thing. Implicit instantiation is still very simplistic, and will create a new definition for the class template specialization (as it should) but it only actually instantiates the base classes and attaches those. Actually instantiating class members will follow. Also, instantiate the types of non-type template parameters before checking them, allowing, e.g., template<typename T, T Value> struct Constant; to work properly. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65924 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-02Rework the way we find locally-scoped external declarations when weDouglas Gregor
need them to evaluate redeclarations or call a function that hasn't already been declared. We now keep a DenseMap of these locally-scoped declarations so that they are not visible but can be quickly found, e.g., when we're looking for previous declarations or before we go ahead and implicitly declare a function that's being called. Fixes PR3672. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65792 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-28Whoops, actually remove the VLA/VM check in FinalizeDeclaratorGroup.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65737 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-28Fix invalid VLAs/VMs in Sema::ActOnVariableDeclarator, so that the variable ↵Anders Carlsson
will have the right type by the time the initializer is checked. This ensures that code like int a[(int)(1.0 / 1.0) = { 1 } will work. Eli, please review. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65725 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-28Fix a crash in test/Parser/control-scope.c that testrunner didn'tChris Lattner
notice because it was a negative test with a fix suggested by Jean-Daniel Dupas. Convert the test from a negative to a positive test to catch stuff like this. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65708 91177308-0d34-0410-b5e6-96231b3b80d8
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