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2010-04-12When creating the implicitly-declared special member functions, beDouglas Gregor
sure to introduce them into the current Scope (when we have one) in addition to the DeclContext for the class, so that they can be found by name lookup for inline members of the class. Fixes PR6570. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101047 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-10When a member pointer is dereferenced, the class it points into must be ↵Sebastian Redl
complete. Enforce this. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100925 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-10Diagnose more cases of initializing distinct members of an anonymous unionJohn McCall
member. Use a better diagnostic for this case. Also fix a bug with nested anonymous structs/unions for -Wreorder; this last was PR6575. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100923 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-10Diagnose misordered initializers in constructor templates immediately instead ofJohn McCall
when they're instantiated. Merge the note into the -Wreorder warning; it doesn't really contribute much, and it was splitting a thought across diagnostics anyway. Don't crash in the parser when a constructor's initializers end in a comma and there's no body; the recovery here is still terrible, but anything's better than a crash. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100922 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-09Turn access control on by default in -cc1.John McCall
Remove -faccess-control from -cc1; add -fno-access-control. Make the driver pass -fno-access-control by default. Update a bunch of tests to be correct under access control. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100880 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-09Remove all "used" static functions *after* we have performed all ofDouglas Gregor
the implicit template instantiations we need to perform. Otherwise, we end up erroneously diagnosing static functions as used if they were only used within an implicit template instantiation. Fixes a bunch of spurious failures when building Clang with Clang. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100872 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-09Improve diagnostics when we fail to convert from a source type to aDouglas Gregor
destination type for initialization, assignment, parameter-passing, etc. The main issue fixed here is that we used rather confusing wording for diagnostics such as t.c:2:9: warning: initializing 'char const [2]' discards qualifiers, expected 'char *' [-pedantic] char *name = __func__; ^ ~~~~~~~~ We're not initializing a 'char const [2]', we're initializing a 'char *' with an expression of type 'char const [2]'. Similar problems existed for other diagnostics in this area, so I've normalized them all with more precise descriptive text to say what we're initializing/converting/assigning/etc. from and to. The warning for the code above is now: t.c:2:9: warning: initializing 'char *' from an expression of type 'char const [2]' discards qualifiers [-pedantic] char *name = __func__; ^ ~~~~~~~~ Fixes <rdar://problem/7447179>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100832 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-08Downgrade the "declaration does not declare anything" error to aDouglas Gregor
warning. It's not harmful to have such pointless declarations, and GCC does not diagnose this issue consistently. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100814 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-08Introduce an egregious hack to work around a bug in libstdc++ 4.2.x'sDouglas Gregor
<tr1/hashtable> header, where a friend class template std::tr1::__detail::_Map_base is declared with the wrong template parameters. GCC doesn't catch the problem, so Clang does a little back-flip to avoid diagnosing just this one instance of the problem. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100790 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-08Make CXXScopeSpec invalid when incomplete, and propagate that into anyJeffrey Yasskin
Declarator that depends on it. This fixes several redundant errors and bad recoveries. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100779 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-07Fix some redundant errors by changing CXXScopeSpec::isSet calls intoJeffrey Yasskin
isNotEmpty calls. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100722 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-07rename llvm::llvm_report_error -> llvm::report_fatal_errorChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100708 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-02Rework our handling of copy construction of temporaries, which was aDouglas Gregor
poor (and wrong) approximation of the actual rules governing when to build a copy and when it can be elided. The correct implementation is actually simpler than the approximation. When we only enumerate constructors as part of initialization (e.g., for direct initialization or when we're copying from a class type or one of its derived classes), we don't create a copy. When we enumerate all conversion functions, we do create a copy. Before, we created some extra copies and missed some others. The new test copy-initialization.cpp shows a case where we missed creating a (required, non-elidable) copy as part of a user-defined conversion, which resulted in a miscompile. This commit also fixes PR6757, where the missing copy made us reject well-formed code in the ternary operator. This commit also cleans up our handling of copy elision in the case where we create an extra copy of a temporary object, which became necessary now that we produce the right copies. The code that seeks to find the temporary object being copied has moved into Expr::getTemporaryObject(); it used to have two different not-quite-the-same implementations, one in Sema and one in CodeGen. Note that we still do not attempt to perform the named return value optimization, so we miss copy elisions for return values and throw expressions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100196 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-02Diagnose multiple base and member initializers in class templates.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100179 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-31Improve diagnostics when an elaborated-type-specifer containing aDouglas Gregor
nested-name-specifier (e.g., "class T::foo") fails to find a tag member in the scope nominated by the nested-name-specifier. Previously, we gave a bland error: 'Nested' does not name a tag member in the specified scope which didn't actually say where we were looking, which was rather horrible when the nested-name-specifier was instantiated. Now, we give something a bit better: error: no class named 'Nested' in 'NoDepBase<T>' git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100060 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-31Fix PR6327: restore invariants when there's a parse error in an initializer.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99980 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-30Fix a bug where we would incorrectly report an error about initializing two ↵Anders Carlsson
fields in an anonymous struct. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99891 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-29Support __attribute__((packed)) (along with other attributes) at theDouglas Gregor
end of a struct/class/union in C++, from Justin Bogner! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99811 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-29Fix a nasty bug in the virtual base computation which would lead to us ↵Anders Carlsson
initializing virtual bases in the wrong order. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99806 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-26Compare namespaces properly when looking for redeclarations ofDouglas Gregor
namespace aliases. Fixes PR6341. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99664 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-26When trying to determine whether one operand of a conditionalDouglas Gregor
expression can be converted to the type of another, only apply the lvalue-to-rvalue conversion to the type of the expression we're converting, *not* the array-to-pointer or function-to-pointer conversions. Fixes PR6595. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99652 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-26Switch semantic analysis of the conditional operator from usingDouglas Gregor
CheckReferenceInit to using the new initialization sequence code. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99647 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-26Do not mark the destructor of a function parameter's type. Fixes PR6709.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99615 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-24Switch static_cast from the old reference-initialization code (viaDouglas Gregor
CheckReferenceInit) over to the new initialization code (InitializationSequence), which is better-tested and doesn't require us to compute the entire conversion sequence twice. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99452 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-24When a declaration of a function is missing an exception specificationDouglas Gregor
that was present in a prior declaration, emit a warning rather than a hard error (which we did before, and still do with mismatched exception specifications). Moreover, provide a fix-it hint with the throw() clause that should be added, e.g., t.C:10:7: warning: 'operator new' is missing exception specification 'throw(std::bad_alloc)' void *operator new(unsigned long sz) ^ throw(std::bad_alloc) As part of this, disable the warning when we're missing an exception specification on operator new, operator new[], operator delete, or operator delete[] when exceptions are turned off (-fno-exceptions). Fixes PR5957. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99388 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-24When performing name lookup for the allocation or deallocationDouglas Gregor
operators, make sure that the implicitly-declared global new and delete operators are always available. Fixes PR5904. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99382 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-24Make sure to properly track the anonymous namespace that lives insideDouglas Gregor
each namespace, even when the outer namespace has multiple definitions. As part of this, collapsed two pointers worth of storage (original namespace and inner anonymous namespace) into a single pointer with a distinguishing bit, since the two are mutually exclusive, saving a pointer per NamespaceDecl. Fixes PR6620. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99368 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-23When recovering from a qualified typedef name, don't clear out theDouglas Gregor
DeclContext because we don't want a NULL DeclContext. Instead, use the current context. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99281 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-21Fix PR6618.Rafael Espindola
If a struct has an invalid field, mark it as invalid. Also avoid producing errors about incomplete types that are invalid. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99150 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-20Implement -Wshadow for parameter declarations as well.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99037 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-19Promote enum types during -Wsign-compare. Fixes some spurious warnings,John McCall
mostly during conditional expressions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98975 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-19Pretty-print anonymous types using their kind and presumed location.John McCall
Fixes PR6643. Patch by Mike M! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98946 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-18When elevating access along an inheritance path, initialize the computedJohn McCall
access to the (elevated) access of the accessed declaration, if applicable, rather than plunking that access onto the end after we've calculated the inheritance access. Also, being a friend of a derived class gives you public access to its members (subject to later modification by further inheritance); it does not simply ignore a single location of restricted inheritance. Also, when computing the best unprivileged path to a subobject, preserve the information that the worst path might be AS_none (forbidden) rather than a minimum of AS_private. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98899 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-17Provide a test case for PR6629.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98702 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-16Forgot the testcases.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98685 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-13Fix PR6562. If a type is dependent, we don't know if it will have implicitRafael Espindola
destructors. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98440 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-12Improve the unused-value check to look into comma expressions and filter outJohn McCall
voids in sub-expressions. Patch by Mike M! Fixes PR4806. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98335 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-10Move test and also test codegen.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98154 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-10When pretty-printing tag types, only print the tag if we're in C (andJohn McCall
therefore not creating ElaboratedTypes, which are still pretty-printed with the written tag). Most of these testcase changes were done by script, so don't feel too sorry for my fingers. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98149 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-10add missing testRafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98129 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-08In C++98/03, an uninitialized variable that has POD class type will beDouglas Gregor
uninitialized. This seems not to be the case in C++0x, where we still call the (trivial) default constructor for a POD class (!). Previously, we had implemented only the C++0x rules; now we implement both. Fixes PR6536. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97928 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-08Downgrade errors when trying to catch a pointer or reference toDouglas Gregor
incomplete type to warnings; GCC (and EDG in GCC compatibility mode) permit such handles. Fixes PR6527. (For real this time) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97927 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-08Revert r97925, it only contained the test updates not the actual fix.Chandler Carruth
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97926 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-07Downgrade errors when trying to catch a pointer or reference toDouglas Gregor
incomplete type to warnings; GCC (and EDG in GCC compatibility mode) permit such handles. Fixes PR6527. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97925 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-07Perform overload resolution when static_cast'ing from aDouglas Gregor
pointer-to-member-to-derived to a pointer-to-member-to-base. Fixes PR6072. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97923 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-07Reference binding via user-defined conversion can compute a bindingDouglas Gregor
that is not reference-related (because it requires another implicit conversion to which we can find). Fixes PR6483. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97922 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-03Implement name hiding for names found through virtual base subobjectsDouglas Gregor
that are hidden by other derived base subobjects reached along a lookup path that does *not* pass through the hiding subobject (C++ [class.member.lookup]p6). Fixes PR6462. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97640 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-02During codegen assert that any copy assignment, destructor or constructor thatRafael Espindola
we need to synthesize has been marked as used by Sema. Change Sema to avoid these asserts. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97589 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-02Add test case from PR6064, which now worksDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97575 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-02Fix an amusing typo that completely the re-introduction of parametersDouglas Gregor
for the purposes of parsing default arguments. In effect, we would re-introduce the parameter with a default argument N times (where N is the number of parameters preceding the parameter with a default argument). This showed up when a defaulted parameter of a member function of a local class shadowed a parameter of the enclosing function. Fixes PR6383. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97534 91177308-0d34-0410-b5e6-96231b3b80d8
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