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2010-02-25When computing the composite pointer type for relational comparisons,Douglas Gregor
equality comparisons, and conditional operators, produce a composite pointer type with the appropriate additional "const" qualifiers if the pointer types would otherwise be incompatible. This is a small extension (also present in GCC and EDG in a slightly different form) that permits code like: void** i; void const** j; i == j; with the following extwarn: t.cpp:5:5: warning: comparison of distinct pointer types ('void **' and 'void const **') uses non-standard composite pointer type 'void const *const *' [-pedantic] i == j; ~ ^ ~ Fixes PR6346, and I'll be filing a core issue about this with the C++ committee. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97177 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-25Restore the invariant that a nested-name-specifier can only containDouglas Gregor
class types, dependent types, and namespaces. I had previously weakened this invariant while working on parsing pseudo-destructor expressions, but recent work in that area has made these changes unnecessary. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97112 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-25Use CXXPseudoDestructorExpr as the stored representation for dependentDouglas Gregor
expressions that look like pseudo-destructors, e.g., p->T::~T() where p has dependent type. At template instantiate time, we determine whether we actually have a pseudo-destructor or a member access, and funnel down to the appropriate routine in Sema. Fixes PR6380. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97092 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-25Catch more uses of uninitialized implicit conversion sequences.John McCall
When diagnosing bad conversions, skip the conversion for ignored object arguments. Fixes PR 6398. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97090 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-24Keep track of the location of the '~' in a pseudo-destructor expression.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97080 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-24Retain complete source information for the type after the '~' in aDouglas Gregor
CXXPseudoDestructorExpr. Update template instantiation for pseudo-destructor expressions to use this source information and to make use of Sema::BuildPseudoDestructorExpr when the base expression is dependent or refers to a scalar type. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97079 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-24Make sure that we have type source information for the scope type of aDouglas Gregor
pseudo-destructor expression. Attempt #1 at fixing the MSVC buildbot. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97076 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-24Split ActOnPseudoDestructorExpr into the part that interprets theDouglas Gregor
parser's data structures and the part that performs semantic analysis and AST building, in preparation for improved template instantiation of pseudo-destructor expressions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97070 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-24Retain source information for the "type-name ::" in aDouglas Gregor
pseudo-destructor expression such as p->T::~T() git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97060 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-24ActOnPseudoDestructorExpr now performs all semantic analysis forDouglas Gregor
pseudo-destructor expressions, and builds the CXXPseudoDestructorExpr node directly. Currently, this only affects pseudo-destructor expressions when they are parsed, but not after template instantiation. That's coming next... Improve parsing of pseudo-destructor-names. When parsing the nested-name-specifier and we hit the sequence of tokens X :: ~, query the actual module to determine whether X is a type-name (in which case the X :: is part of the pseudo-destructor-name but not the nested-name-specifier) or not (in which case the X :: is part of the nested-name-specifier). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97058 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-24Rework parsing of pseudo-destructor expressions and explicitDouglas Gregor
destructor calls, e.g., p->T::~T We now detect when the member access that we've parsed, e.g., p-> or x. may be a pseudo-destructor expression, either because the type of p or x is a scalar or because it is dependent (and, therefore, may become a scalar at template instantiation time). We then parse the pseudo-destructor grammar specifically: ::[opt] nested-name-specifier[opt] type-name :: ∼ type-name and hand those results to a new action, ActOnPseudoDestructorExpr, which will cope with both dependent member accesses of destructors and with pseudo-destructor expressions. This commit affects the parsing of pseudo-destructors, only; the semantic actions still go through the semantic actions for member access expressions. That will change soon. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97045 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23Implement crazy destructor name lookup semantics differently inDouglas Gregor
C++98/03 and C++0x, since the '0x semantics break valid C++98/03 code. This new mess is tracked by core issue 399, which is still unresolved. Fixes PR6358 and PR6359. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@96836 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-21Eliminate the default arguments to ASTContext::getFunctionType(),Douglas Gregor
fixing up a few callers that thought they were propagating NoReturn information but were in fact saying something about exception specifications. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@96766 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-21Implement support for parsing pseudo-destructor expression with a ↵Douglas Gregor
nested-name-specifier, e.g., typedef int Int; int *p; p->Int::~Int(); This weakens the invariant that the only types in nested-name-specifiers are tag types (restricted to class types in C++98/03). However, we weaken this invariant as little as possible, accepting arbitrary types in nested-name-specifiers only when we're in a member access expression that looks like a pseudo-destructor expression. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@96743 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-21Commiting a revert from dgregor of a bit of destructor logic until we canChandler Carruth
figure out how not to break lots of code using this. See PR6358 and PR6359 for motivating examples. FIXME's left in the code and the test. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@96733 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-18Fixed a crash specific to blocks in c++ uncovered by an internalFariborz Jahanian
test suite. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@96608 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-16Improve parsing and instantiation of destructor names, so that we canDouglas Gregor
now cope with the destruction of types named as dependent templates, e.g., y->template Y<T>::~Y() Nominally, we implement C++0x [basic.lookup.qual]p6. However, we don't follow the letter of the standard here because that would fail to parse template<typename T, typename U> X0<T, U>::~X0() { } properly. The problem is captured in core issue 339, which gives some (but not enough!) guidance. I expect to revisit this code when the resolution of 339 is clear, and/or we start capturing better source information for DeclarationNames. Fixes PR6152. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@96367 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-11Fix leak in CXXNewExpr where the SubExprs array would get allocated directly ↵Ted Kremenek
using 'new[]' instead of the allocator associated with ASTContext. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95933 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-11Eliminate a bunch of unnecessary ASTContexts from members functions ofDouglas Gregor
Decl subclasses. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95841 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-08Thread a source location into the template-argument deduction routines. ThereJohn McCall
may be some other places that could take advantage of this new information, but I haven't really looked yet. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95600 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-05When we're parsing an expression that may have looked like aDouglas Gregor
declaration, we can end up with template-id annotation tokens for types that have not been converted into type annotation tokens. When this is the case, translate the template-id into a type and parse as an expression. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95404 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-04Extract a common structure for holding information about the definitionJohn McCall
of a C++ record. Exposed a lot of problems where various routines were silently doing The Wrong Thing (or The Acceptable Thing in The Wrong Order) when presented with a non-definition. Also cuts down on memory usage. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95330 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-03Teach the allocation function overload handling to deal with templates, andChandler Carruth
prevent a crash on templates when looking for an existing declaration of the predefined global operators. This fixes PR5918. Added an easy test case for the overload handling, but testing the crash is a bit trickier. Created a new test that can use multiple runs with a define to trigger which test case is used so we can test this type of issue. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95220 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-03Implement the lvalue-to-rvalue conversion where needed. TheDouglas Gregor
lvalue-to-rvalue conversion adjusts lvalues of qualified, non-class type to rvalue expressions of the unqualified variant of that type. For example, given: const int i; (void)(i + 17); the lvalue-to-rvalue conversion for the subexpression "i" will turn it from an lvalue expression (a DeclRefExpr) with type 'const int' into an rvalue expression with type 'int'. Both C and C++ mandate this conversion, and somehow we've slid through without implementing it. We now have both DefaultFunctionArrayConversion and DefaultFunctionArrayLvalueConversion, and which gets used depends on whether we do the lvalue-to-rvalue conversion or not. Generally, we do the lvalue-to-rvalue conversion, but there are a few notable exceptions: - the left-hand side of a '.' operator - the left-hand side of an assignment - a C++ throw expression - a subscript expression that's subscripting a vector Making this change exposed two issues with blocks: - we were deducing const-qualified return types of non-class type from a block return, which doesn't fit well - we weren't always setting the known return type of a block when it was provided with the ^return-type syntax Fixes the current Clang-on-Clang compile failure and PR6076. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95167 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-31Switch expressions like T() and T(1,2) over to new-style initialization. I'mEli Friedman
not quite sure what we want to do about the AST representation; comments welcome. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94967 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-27Fix a major oversight in the comparison of standard conversionDouglas Gregor
sequences, where we would occasionally determine (incorrectly) that one standard conversion sequence was a proper subset of another when, in fact, they contained completely incomparable conversions. This change records the types in each step within a standard conversion sequence, so that we can check the specific comparison types to determine when one sequence is a proper subset of the other. Fixes this testcase (thanks, Anders!), which was distilled from PR6095 (also thanks to Anders). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94660 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-26Pass access specifiers around in overload resolution.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94485 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-20Give UnresolvedSet the ability to store access specifiers for each declaration.John McCall
Change LookupResult to use UnresolvedSet. Also extract UnresolvedSet into its own header and make it templated over an inline capacity. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@93959 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-16Make the AST explicitly represent the cast of the first operand of a Eli Friedman
pointer-to-member operator. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@93592 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-15Preserve type source information in explicit cast expressions.John McCall
Patch by Enea Zaffanella. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@93522 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-13Record some basic information about bad conversion sequences. Use thatJohn McCall
information to feed diagnostics instead of regenerating it. Much room for improvement here, but fixes some unfortunate problems reporting on method calls. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@93316 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-12So I was sitting around, trying vainly to think of something to commit, and thenJohn McCall
I said to myself, self, why don't you go add a couple of parameters to a method and then fail to use them, and I thought that sounded like a pretty good idea, so I did it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@93233 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-12Introduce a specific representation for the ambiguous implicit conversionJohn McCall
sequence. Lots of small relevant changes. Fixes some serious problems with ambiguous conversions; also possibly improves associated diagnostics. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@93214 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-08Change the printing of OR_Deleted overload results to print all the candidates,John McCall
not just the viable ones. This is reasonable because the most common use of deleted functions is to exclude some implicit conversion during calls; users therefore will want to figure out why some other options were excluded. Started sorting overload results. Right now it just sorts by location in the translation unit (after putting viable functions first), but we can do better than that. Changed bool OnlyViable parameter to PrintOverloadCandidates to an enum for better self-documentation. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@92990 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-07Add an "implicit" bit to CXXThisExpr, so that we can trackDouglas Gregor
implicitness without losing track of the (logical or actual) location where "this" would occur in the source. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@92958 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-06Improve the diagnostics used to report implicitly-generated class membersJohn McCall
as parts of overload sets. Also, refer to constructors as 'constructors' rather than functions. Adjust a lot of tests. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@92832 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-02Get rid of more unnecessary code.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@92429 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-02Get rid of some unnecessary code.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@92428 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-24When transforming CXXExprWithTemporaries and CXXBindTemporaryExprDouglas Gregor
expressions (e.g., for template instantiation), just transform the subexpressions and return those, since the temporary-related nodes will be implicitly regenerated. Fixes PR5867, but I said that before... git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@92135 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-23There is no such thing as typeinfo for a cv-qualified type. AssertDouglas Gregor
that this is true when mangling, then fix up the various places in Sema and/or CodeGen that need to remove qualifiers. Addresses a linking issue when building LLVM with Clang. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@92064 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-23Diagnose the use of incomplete types in C++ typeid expressionsDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@92045 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-23Remove cv-qualifiers from the argument to typeidDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@92041 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-22Allow the first parameter of operator new to be a cv-qualifiedDouglas Gregor
size_t. Also, fix an issue with initialization of parameters in calls, where we weren't removing the cv-qualifiers on the parameter type itself. Fixes PR5823. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91941 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-22Switch Sema::AddCXXDirectInitializerToDecl over to InitializationSequenceDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91927 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-22Switch InitializedEntity from TypeLoc down to just QualTypes, since we don't ↵Douglas Gregor
use the location information but we did spend a bunch of time building faked-up TypeLocs git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91905 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-18Switch the initialization required by return statements over to theDouglas Gregor
new InitializationSequence. This fixes some bugs (e.g., PR5808), changed some diagnostics, and caused more churn than expected. What's new: - InitializationSequence now has a "C conversion sequence" category and step kind, which falls back to - Changed the diagnostics for returns to always have the result type of the function first and the type of the expression second. CheckSingleAssignmentConstraints to peform checking in C. - Improved ASTs for initialization of return values. The ASTs now capture all of the temporaries we need to create, but intentionally do not bind the tempoary that is actually returned, so that it won't get destroyed twice. - Make sure to perform an (elidable!) copy of the class object that is returned from a class. - Fix copy elision in CodeGen to properly see through the subexpressions that occur with elidable copies. - Give "new" its own entity kind; as with return values and thrown objects, we don't bind the expression so we don't call a destructor for it. Note that, with this patch, I've broken returning move-only types in C++0x. We'll fix it later, when we tackle NRVO. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91669 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
2009-12-16Fix semantic diagnostics that embed English works, from Nicola Gigante!Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91503 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-16Check in a rudimentary FullExpr class that isn't used anywhere yet. Rename ↵Anders Carlsson
Action::FullExpr to Action::MakeFullExpr to avoid name clashes. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91494 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
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