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path: root/lib/Sema/SemaDeclCXX.cpp
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2010-05-12When we emit an error during the implicit definition of a specialDouglas Gregor
member function (default constructor, copy constructor, copy assignment operator, destructor), emit a note showing where that implicit definition was required. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103619 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-11Merged Elaborated and QualifiedName types.Abramo Bagnara
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103517 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-11Speculatively revert r103497, "Do not mark the virtual members of anDaniel Dunbar
implicitly-instantiated class as ...", which seems to have broken bootstrap. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103515 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-11Do not mark the virtual members of an implicitly-instantiated class asDouglas Gregor
referenced unless we see one of them defined (or the key function defined, if it as one) or if we need the vtable for something. Fixes PR7114. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103497 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-06It turns out that we should be allowing redeclarations within functionDouglas Gregor
scope. Thanks to Steven Watanabe for correcting me. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103210 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-06Partial and full specializations of a class template may have aDouglas Gregor
different tag kind ("struct" vs. "class") than the primary template, which has an affect on access control. Should fix the last remaining Boost.Accumulors failure. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103144 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-05When implicit definition of the copy-assignment operator fails,Douglas Gregor
provide a note that shows where the copy-assignment operator was needed. We used to have this, but I broke it during refactoring. Finishes PR6999. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103127 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-05Reimplement code generation for copying fields in theDouglas Gregor
implicitly-generated copy constructor. Previously, Sema would perform some checking and instantiation to determine which copy constructors, etc., would be called, then CodeGen would attempt to figure out which copy constructor to call... but would get it wrong, or poke at an uninstantiated default argument, or fail in other ways. The new scheme is similar to what we now do for the implicit copy-assignment operator, where Sema performs all of the semantic analysis and builds specific ASTs that look similar to the ASTs we'd get from explicitly writing the copy constructor, so that CodeGen need only do a direct translation. However, it's not quite that simple because one cannot explicit write elementwise copy-construction of an array. So, I've extended CXXBaseOrMemberInitializer to contain a list of indexing variables used to copy-construct the elements. For example, if we have: struct A { A(const A&); }; struct B { A array[2][3]; }; then we generate an implicit copy assignment operator for B that looks something like this: B::B(const B &other) : array[i0][i1](other.array[i0][i1]) { } CodeGen will loop over the invented variables i0 and i1 to visit all elements in the array, so that each element in the destination array will be copy-constructed from the corresponding element in the source array. Of course, if we're dealing with arrays of scalars or class types with trivial copy-assignment operators, we just generate a memcpy rather than a loop. Fixes PR6928, PR5989, and PR6887. Boost.Regex now compiles and passes all of its regression tests. Conspicuously missing from this patch is handling for the exceptional case, where we need to destruct those objects that we have constructed. I'll address that case separately. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103079 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-04When creating a call to a base subobject's operator= in anDouglas Gregor
implicitly-defined copy assignment operator, suppress the protected access check. This eliminates the remaining failure in the Boost.SmartPtr library (that was a product of the copy-assignment generation rewrite) and, presumably, the Boost.TR1 library as well. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103010 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-04When inheriting a default argument expression, inherit the full expression,John McCall
not just the inner expression. This is important if the expression has any temporaries. Fixes PR 7028. Basically a symptom of really tragic method names. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102998 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03Diagnose unused exception parameters under a different warning groupDouglas Gregor
(-Wunused-exception-parameter) than normal variables, since it's more common to name and then ignore an exception parameter. This warning is neither enabled by default nor by -Wall. Fixes <rdar://problem/7931045>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102931 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03When creating the declaration reference for implicit copy-constructionDouglas Gregor
of a base class, give it real source-location information. Fixes PR7017. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102916 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03When declaring a namespace alias, ignore previous declarations thatDouglas Gregor
aren't in scope. Fixes PR7014. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102915 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03Replace a char*/size pair with stringref.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102902 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-02Add an enum to CXXConstructExpr so we can determine if the construction ↵Anders Carlsson
expression constructs a non-virtual or virtual base. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102879 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01Complete reimplementation of the synthesis for implicitly-defined copyDouglas Gregor
assignment operators. Previously, Sema provided type-checking and template instantiation for copy assignment operators, then CodeGen would synthesize the actual body of the copy constructor. Unfortunately, the two were not in sync, and CodeGen might pick a copy-assignment operator that is different from what Sema chose, leading to strange failures, e.g., link-time failures when CodeGen called a copy-assignment operator that was not instantiation, run-time failures when copy-assignment operators were overloaded for const/non-const references and the wrong one was picked, and run-time failures when by-value copy-assignment operators did not have their arguments properly copy-initialized. This implementation synthesizes the implicitly-defined copy assignment operator bodies in Sema, so that the resulting ASTs encode exactly what CodeGen needs to do; there is no longer any special code in CodeGen to synthesize copy-assignment operators. The synthesis of the body is relatively simple, and we generate one of three different kinds of copy statements for each base or member: - For a class subobject, call the appropriate copy-assignment operator, after overload resolution has determined what that is. - For an array of scalar types or an array of class types that have trivial copy assignment operators, construct a call to __builtin_memcpy. - For an array of class types with non-trivial copy assignment operators, synthesize a (possibly nested!) for loop whose inner statement calls the copy constructor. - For a scalar type, use built-in assignment. This patch fixes at least a few tests cases in Boost.Spirit that were failing because CodeGen picked the wrong copy-assignment operator (leading to link-time failures), and I suspect a number of undiagnosed problems will also go away with this change. Some of the diagnostics we had previously have gotten worse with this change, since we're going through generic code for our type-checking. I will improve this in a subsequent patch. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102853 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01When defining implicit copy constructors, use SetBaseOrMemberInitializers to ↵Anders Carlsson
initialize the bases. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102842 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01Added an RAII object that helps set up/tear down the Sema contextDouglas Gregor
information required to implicitly define a C++ special member function. Use it rather than explicitly setting CurContext on entry and exit, which is fragile. Use this RAII object for the implicitly-defined default constructor, copy constructor, copy assignment operator, and destructor. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102840 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01It turns out that basically every caller to RequireCompleteDeclContextJohn McCall
already knows what context it's looking in. Just pass that context in instead of (questionably) recalculating it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102818 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-28More of Sema to implement initialization ofFariborz Jahanian
ivar of c++ object types. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102500 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-27Improve the diagnostic you get when making a qualified member accessJohn McCall
with a qualifier referencing a different type. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102409 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-25Revert enough of my patches to fix self-host again :(Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102289 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-24Add an explicit UsuallyTinyPtrVector that takes a single element.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102283 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-24DefineImplicitCopyConstructor now uses SetBaseOrMemberInitializers to create ↵Anders Carlsson
implicit base initializers. (Member initializers are still handled by CodeGenFunction::SynthesizeCXXCopyConstructor for now). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102279 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-24When building implicit base initializers, add a derived-to-base cast that ↵Anders Carlsson
points to the exact base specifier. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102277 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-24Actually produce base paths for CastExprs of kind CK_DerivedToBase.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102259 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-24Pass the base specifiers through to CheckDerivedToBaseConversion. No ↵Anders Carlsson
functionality change yet. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102250 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-24Keep track of when DependentNameTypes have no associated keywordDouglas Gregor
(e.g., no typename, enum, class, etc.), e.g., because the context is one that is known to refer to a type. Patch from Enea Zaffanella! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102243 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-23Cleanup.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102179 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-23Handle copy initialization in BuildImplicitMemberInitializer. Not used yet.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102178 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-23Add an ImplicitInitializerKind enum and pass it to ↵Anders Carlsson
BuildImplicitBaseInitializer and BuildImplicitMemberInitializer. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102166 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-23Fix a think-o that broke self-host.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102165 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-23Factor code to initialize an implicit member out into a separate function.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102162 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-23Remove calls to isDependentContext, since we handle that case earlier in the ↵Anders Carlsson
code. Make BuildImplicitBaseInitializer return a boolean instead. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102159 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-22Re-land the patch that merges two diagnostics into one now that it passes ↵Anders Carlsson
self-host :) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102050 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-21Remove an unused declaration.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102037 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-21Keep tack of whether a base in an InitializedEntity is an inherited virtual ↵Anders Carlsson
base or not. Use this in CheckConstructorAccess. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102020 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-20Factor some common code out into a separate function.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101952 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-19Keep track of the actual storage specifier written on a variable orDouglas Gregor
function declaration, since it may end up being changed (e.g., "extern" can become "static" if a prior declaration was static). Patch by Enea Zaffanella and Paolo Bolzoni. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101826 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-17Vtable -> VTable renames across the board.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101666 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-16Collapse the three separate initialization paths inDouglas Gregor
TryStaticImplicitCast (for references, class types, and everything else, respectively) into a single invocation of InitializationSequence. One of the paths (for class types) was the only client of Sema::TryInitializationByConstructor, which I have eliminated. This also simplified the interface for much of the cast-checking logic, eliminating yet more code. I've kept the representation of C++ functional casts with <> 1 arguments the same, despite the fact that I hate it. That fix will come soon. To satisfy my paranoia, I've bootstrapped + tested Clang with these changes. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101549 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-16Silence warning.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101495 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-15Audit uses of Sema::LookupSingleName for those lookups that areDouglas Gregor
intended for redeclarations, fixing those that need it. Fixes PR6831. This uncovered an issue where the C++ type-specifier-seq parsing logic would try to perform name lookup on an identifier after it already had a type-specifier, which could also lead to spurious ambiguity errors (as in PR6831, but with a different test case). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101419 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-15Feed proper source-location information into Sema::LookupSingleResult,Douglas Gregor
in case it ends up doing something that might trigger diagnostics (template instantiation, ambiguity reporting, access reporting). Noticed while working on PR6831. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101412 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-15Warn about non-aggregate classes with no user-declared constructorsDouglas Gregor
that have reference or const scalar members, since those members can never be initializer or modified. Fixes <rdar://problem/7804350>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101316 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-14Teach typo correction about various language keywords. We can'tDouglas Gregor
generally recover from typos in keywords (since we would effectively have to mangle the token stream). However, there are still benefits to typo-correcting with keywords: - We don't make stupid suggestions when the user typed something that is similar to a keyword. - We can suggest the keyword in a diagnostic (did you mean "static_cast"?), even if we can't recover and therefore don't have a fix-it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101274 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-13Refactor and simplify the computation of implicit conversion sequencesDouglas Gregor
for reference binding. The code attempted to handle both the computation of the ICS and the actual conversion, but the latter is an anachronism: we now use InitializationSequence for that. Sema::CheckReferenceInit is now a static function TryReferenceInit that's only use within overload resolution, and has been simplified slightly. It still needs to be updated per C++ [over.ics.ref], by eliminating more of the lvalue/rvalue checks. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101136 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-13During referencing binding, only consider conversion functions forDouglas Gregor
direct reference binding when the source and target types are not reference-related. Fixes PR6066. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101132 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-13Allow classes to befriend implicitly-declared members. Fixes PR6207 forJohn McCall
members of non-templated classes. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101122 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-13Diagnose declarations of conversion functions with declarators other than '()'.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101098 91177308-0d34-0410-b5e6-96231b3b80d8
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