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path: root/lib/Sema/SemaDecl.cpp
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2010-01-11Allow redefinitions of typedef-names within class scope when the typeDouglas Gregor
they redefine is a class-name but not a typedef-name, per C++0x [dcl.typedef]p4. The code in the test was valid C++98 and is valid C++0x, but an unintended consequence of DR56 made it ill-formed in C++03 (which we were luck enough to implement). Fixes PR5455. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@93188 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-07Whenever we emit a typo-correction diagnostic, also emit a noteDouglas Gregor
pointing to the declaration that we found that has that name (if it is unique). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@92877 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-06Make sure that the key-function computation produces the correctDouglas Gregor
result for a nested class whose first non-pure virtual member function has an inline body. Previously, we were checking for the key function before we had seen the (delayed) inline body. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@92839 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-06Make our marking of virtual members functions in a class beDouglas Gregor
deterministic and work properly with templates. Once a class that needs a vtable has been defined, we now do one if two things: - If the class has no key function, we place the class on a list of classes whose virtual functions will need to be "marked" at the end of the translation unit. The delay until the end of the translation unit is needed because we might see template specializations of these virtual functions. - If the class has a key function, we do nothing; when the key function is defined, the class will be placed on the aforementioned list. At the end of the translation unit, we "mark" all of the virtual functions of the classes on the list as used, possibly causing template instantiation and other classes to be added to the list. This gets LLVM's lib/Support/CommandLine.cpp compiling again. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@92821 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-05Improve key-function computation for templates. In particular:Douglas Gregor
- All classes can have a key function; templates don't change that. non-template classes when computing the key function. - We always mark all of the virtual member functions of class template instantiations. - The vtable for an instantiation of a class template has weak linkage. We could probably use available_externally linkage for vtables of classes instantiated by explicit instantiation declarations (extern templates), but GCC doesn't do this and I'm not 100% that the ABI permits it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@92753 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-04Avoid warnings for functions that return a value using MS-style inlineMike Stump
assembly code. This avoids changing the bahvior when normal asm("") statements are used. The type of code affected would be: void* t4(void) { __asm mov eax, fs:[0x10] } I hope people like this version, if not, let me know. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@92531 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-03Implement typo correction for a variety of Objective-C-specificDouglas Gregor
constructs: - Instance variable lookup ("foo->ivar" and, in instance methods, "ivar") - Property name lookup ("foo.prop") - Superclasses - Various places where a class name is required - Protocol names (e.g., id<proto>) This seems to cover many of the common places where typos could occur. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@92449 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-30when making a decl for __builtin_fabsf() make sure toChris Lattner
attach the appropriate attributes to it. I don't think this manifests as any real change though, we're still not getting the right LLVM IR attributes out of codegen. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@92316 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-30Typo correction for type names when they appear in declarations, e.g., givenDouglas Gregor
tring str2; we produce the following diagnostic + fix-it: typo.cpp:15:1: error: unknown type name 'tring'; did you mean 'string'? tring str2; ^~~~~ string To make this really useful, we'll need to introduce typo correction in many more places (wherever we do name lookup), and implement declaration-vs-expression heuristics that cope with typos better. However, for now this will handle the simple cases where we already get good "unknown type name" diagnostics. The LookupVisibleDecls functions are intended to be used by code completion as well as typo correction; that refactoring will happen later. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@92308 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-30Typedefs can be redeclared. That seems like something we should record inJohn McCall
the AST lest we run into some crazy canonicalization bug like PR5874. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@92283 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-24Tweak the text of several main() diagnostics and punch a hole specifically forJohn McCall
Darwin's sekrit fourth argument. This should probably be factored to let targets make target-specific decisions about what main() should look like. Fixes rdar://problem/7414990 or if different platforms have radically different ideas of what they want in git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@92128 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-23allow the noreturn attribute to be used in class methodsNuno Lopes
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@92090 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-22Switch file-scope assignment initialization over to InitializationSequence.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91881 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-22Eliminate the ASTContext argument to CXXConstructorDecl::isCopyConstructor, ↵Douglas Gregor
since the context is available in the Decl git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91862 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-21Fix for PR5840: fix the kind of name lookup used for classes inEli Friedman
Sema::getTypeName. "LookupNestedNameSpecifierName" isn't quite the right kind of lookup, though; it doesn't ignore namespaces. Someone more familiar with the lookup code should fix this properly. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91809 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-20Make sure we instantiate the destructor for variables initialized byEli Friedman
assignment. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91798 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-20Switch default-initialization of variables of class type (or array thereof) ↵Douglas Gregor
over to InitializationSequence. I could swear that this fixes a PR somewhere, but I couldn't figure out which one git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91796 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-20Revert accidental commitDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91795 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-20Fix CMake build on windows, from Cedric VenetDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91794 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-20Don't inject the class name until that magical lbrace.John McCall
Because of the rules of base-class lookup* and the restrictions on typedefs, it was actually impossible for this to cause any problems more serious than the spurious acceptance of template <class T> class A : B<A> { ... }; instead of template <class T> class A : B<A<T> > { ... }; but I'm sure we can all agree that that is a very important restriction which is well worth making another Parser->Sema call for. (*) n.b. clang++ does not implement these rules correctly; we are not ignoring non-type names git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91792 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-19Refactor to remove more dependencies on PreDeclaratorDC. I seem to have madeJohn McCall
the redeclaration problems in the [temp.explicit]p3 testcase worse, but I can live with that; they'll need to be fixed more holistically anyhow. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91771 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-19Don't use EnterDeclaratorContext when rebuilding a type in the currentJohn McCall
instantiation, since we're not using a Scope object for that anyway. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91770 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-19Initialization improvements: addition of string initialization and a fewEli Friedman
small bug fixes in SemaInit, switch over SemaDecl to use it more often, and change a bunch of diagnostics which are different with the new initialization code. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91767 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-18Pull Sema::isAcceptableLookupResult into SemaLookup. Extract the criteria intoJohn McCall
different functions and pick the function at lookup initialization time. In theory we could actually divide the criteria functions into N different functions for the N cases, but it's so not worth it. Among other things, lets us invoke LookupQualifiedName without recomputing IDNS info every time. Do some refactoring in SemaDecl to avoid an awkward special case in LQN that was only necessary for redeclaration testing for anonymous structs/unions --- which could be done more efficiently with a scoped lookup anyway. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91676 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-17Revert r91073.Mike Stump
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91629 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-17implement PR3962: diagnose more faulty cases of usage of the restrict ↵Nuno Lopes
qualifier. this also removes a FIXME git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91601 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-17revert part of my last patch, and mark only the c++ global new operator as ↵Nuno Lopes
noalias. the rest will be infered by llvm optz git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91600 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-16Make sure C-specific enum warning doesn't trigger in C++.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91563 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-16implement PR5654: add -fassume-sane-operator-new, which is enabled by ↵Nuno Lopes
default, and adds the malloc attribute to the global function new() and to the overloaded new operators. feel free to chage the name to this lengthy argument git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91543 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-16Switch the C++ new expression over to InitializationSequence, ratherDouglas Gregor
than using its own partial implementation of initialization. Switched CheckInitializerTypes over to InitializedEntity/InitializationKind, to help move us closer to InitializationSequence. Added InitializedEntity::getName() to retrieve the name of the entity, for diagnostics that care about such things. Implemented support for default initialization in InitializationSequence. Clean up the determination of the "source expressions" for an initialization sequence in InitializationSequence::Perform. Taught CXXConstructExpr to store more location information. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91492 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-15ShouldDestroyTemporaries? I don't think so.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91450 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-15This patch should fix PR2461. It allows clang to apply the noreturnMike Stump
attribute to function pointers. It also fixes Sema to check function pointers for the noreturn attribute when checking for fallthrough. Patch by Chip Davis, with a slight fix to pass the testsuite. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91408 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-11Fix the handling of dependent enums per C++ DR 502.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91089 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-10Don't complain about falling off the end of a function with an asmMike Stump
block, if the function is supposed to return a value as we don't know exactly what the asm code does. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91073 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-10Clean up enum constants so that they're finally sane. Fixes PR3173 and aEli Friedman
recently introduced crash. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91070 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-10Improve the diagnostic when a new declaration conflicts with a using shadowJohn McCall
declaration. Rename note_using_decl to note_using, which is possibly less confusing. Add a test for non-class-scope using decl collisions and be sure to note the case we can't diagnose yet. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91057 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-10Move initialization via initializer list over to InitializationSequences.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91050 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-10Implement redeclaration checking and hiding semantics for using ↵John McCall
declarations. There are a couple of O(n^2) operations in this, some analogous to the usual O(n^2) redeclaration problem and some not. In particular, retroactively removing shadow declarations when they're hidden by later decls is pretty unfortunate. I'm not yet convinced it's worse than the alternative, though. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91045 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-10Fix for PR5515: allow "merging" array bounds both forwards and backwards.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91044 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-09Reimplement reference initialization (C++ [dcl.init.ref]) using theDouglas Gregor
new notion of an "initialization sequence", which encapsulates the computation of the initialization sequence along with diagnostic information and the capability to turn the computed sequence into an expression. At present, I've only switched one CheckReferenceInit callers over to this new mechanism; more will follow. Aside from (hopefully) being much more true to the standard, the diagnostics provided by this reference-initialization code are a bit better than before. Some examples: p5-var.cpp:54:12: error: non-const lvalue reference to type 'struct Derived' cannot bind to a value of unrelated type 'struct Base' Derived &dr2 = b; // expected-error{{non-const lvalue reference to ... ^ ~ p5-var.cpp:55:9: error: binding of reference to type 'struct Base' to a value of type 'struct Base const' drops qualifiers Base &br3 = bc; // expected-error{{drops qualifiers}} ^ ~~ p5-var.cpp:57:15: error: ambiguous conversion from derived class 'struct Diamond' to base class 'struct Base': struct Diamond -> struct Derived -> struct Base struct Diamond -> struct Derived2 -> struct Base Base &br5 = diamond; // expected-error{{ambiguous conversion from ... ^~~~~~~ p5-var.cpp:59:9: error: non-const lvalue reference to type 'long' cannot bind to a value of unrelated type 'int' long &lr = i; // expected-error{{non-const lvalue reference to type ... ^ ~ p5-var.cpp:74:9: error: non-const lvalue reference to type 'struct Base' cannot bind to a temporary of type 'struct Base' Base &br1 = Base(); // expected-error{{non-const lvalue reference to ... ^ ~~~~~~ p5-var.cpp:102:9: error: non-const reference cannot bind to bit-field 'i' int & ir1 = (ib.i); // expected-error{{non-const reference cannot ... ^ ~~~~~~ p5-var.cpp:98:7: note: bit-field is declared here int i : 17; // expected-note{{bit-field is declared here}} ^ git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90992 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-09First pass at implementing C++ enum semantics: calculate (and store) anJohn McCall
"integer promotion" type associated with an enum decl, and use this type to determine which type to promote to. This type obeys C++ [conv.prom]p2 and is therefore generally signed unless the range of the enumerators forces it to be unsigned. Kills off a lot of false positives from -Wsign-compare in C++, addressing rdar://7455616 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90965 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-09Don't warn about function templates or function template specializations.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90943 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-09Rename Sema::IsOverload to Sema::CheckOverload. Teach it to ignore unresolvedJohn McCall
using value decls; we optimistically assume they won't turn into conflicts. Teach it to tell the caller *why* the function doesn't overload with the returned decl; this will be useful for using hiding. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90939 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-09Move the missing prototypes checking out into a new function. Don't warn ↵Anders Carlsson
about inline functions. Add a test. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90938 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-08Fix for PR5710: make sure to put function template specializations into theEli Friedman
DeclContext, so they don't completely disappear from the AST. I don't particularly like this fix, but I don't see any obviously better way to deal with it, and I think it's pretty clearly an improvement; comments welcome. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90835 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-07Rework how virtual member functions are marked. If a class has no key ↵Anders Carlsson
function, we now wait until the end of the translation unit to mark its virtual member functions as references. This lays the groundwork for fixing PR5557. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90752 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-07DeclaratorInfo -> TypeSourceInfo. Makes an effort to rename associated ↵John McCall
variables, but the results are imperfect. For posterity, I did: cat <<EOF > $cmdfile s/DeclaratorInfo/TypeSourceInfo/g s/DInfo/TInfo/g s/TypeTypeSourceInfo/TypeSourceInfo/g s/SourceTypeSourceInfo/TypeSourceInfo/g EOF find lib -name '*.cpp' -not -path 'lib/Parse/*' -exec sed -i '' -f $cmdfile '{}' \; find lib -name '*.h' -exec sed -i '' -f $cmdfile '{}' \; find include -name '*.h' -not -path 'include/clang/Parse/*' -not -path 'include/clang/Basic/*' -exec sed -i '' -f $cmdfile '{}' \; git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90743 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-07Move RequireCompleteType requirement for fields early into ActOnField so thatEli Friedman
subsequent code which depends on a complete type does the right thing. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90727 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-06remove some extraneous syntax: sourceloc implicitly converts to sourcerange.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90710 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-06Pass the desired vtable linkage to GenerateVtable directly. Only call ↵Anders Carlsson
MaybeMarkVirtualImplicitMembersReferenced for non-inline functions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90686 91177308-0d34-0410-b5e6-96231b3b80d8
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