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path: root/lib/Sema/SemaExprCXX.cpp
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2011-02-01Implement access checking for the "delete" operator. Fixes PR9050,Douglas Gregor
from Alex Miller! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@124663 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-28Fix some corner cases in the __is_base_of logic.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@124505 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-28Give OpaqueValueExpr a source location, because its source locationDouglas Gregor
might be queried in places where we absolutely require a valid location (e.g., for template instantiation). Fixes some major brokenness in the use of __is_convertible_to. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@124465 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-27Teach the evaluation of the __is_convertible_to trait to translateDouglas Gregor
access control errors into SFINAE errors, so that the trait provides enough support to implement the C++0x std::is_convertible type trait. To get there, the SFINAETrap now knows how to set up a SFINAE context independent of any template instantiations or template argument deduction steps, and (separately) can set a Sema flag to translate access control errors into SFINAE errors. The latter can also be useful if we decide that access control errors during template argument deduction should cause substitution failure (rather than a hard error) as has been proposed for C++0x. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@124446 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-27Document some serious badness in our evaluation of the type traits: we need ↵Douglas Gregor
to be sure we have complete types in many cases git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@124428 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-27Implement the Microsoft __is_convertible_to type trait, modeling theDouglas Gregor
semantics after the C++0x is_convertible type trait. This implementation is not 100% complete, because it allows access errors to be hard errors (rather than just evaluating false). Original patch by Steven Watanabe! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@124425 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-27Revert r124217 because it didn't catch the actual error case it was trying toJeffrey Yasskin
catch: lock_guard(my_mutex); declares a variable instead of creating a temporary. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@124398 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-27Do a proper recursive lookup when deciding whether a class's usualJohn McCall
deallocation function has a two-argument form. Store the result of this check in new[] and delete[] nodes. Fixes rdar://problem/8913519 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@124373 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-27Fix whitespace.NAKAMURA Takumi
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@124364 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-277bit-ize.NAKAMURA Takumi
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@124363 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-27Fix a horrible bug in our handling of C-style casting, where a C-styleDouglas Gregor
derived-to-base cast that also casts away constness (one of the cases for static_cast followed by const_cast) would be treated as a bit-cast rather than a derived-to-base class, causing miscompiles and heartburn. Fixes <rdar://problem/8913298>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@124340 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-26Reference qualifiers for *this: implement C++0x [expr.mptr.oper]p6,Douglas Gregor
the restrictions on .* and ->* for ref-qualified pointer-to-member functions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@124294 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-25Add an attribute to forbid temporary instances of a type. This allows classJeffrey Yasskin
authors to write class __attribute__((forbid_temporaries)) Name { ... }; when they want to force users to name all variables of the type. This protects people from doing things like creating a scoped_lock that only lives for a single statement instead of an entire scope. The warning produced by this attribute can be disabled by -Wno-forbid-temporaries. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@124217 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-21When throwing an elidable object, first try to treat the subexpressionDouglas Gregor
as an rvalue per C++0x [class.copy]p33. If that fails, try again with the original subexpression. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@124002 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-21Promote the static getNRVOCandidate() function, which computed theDouglas Gregor
NRVO candidate for a return statement, to Sema::getCopyElisionCandidate(), and teach it enough to also determine the NRVO candidate for a throw expression. We still don't use the latter information, however. Along the way, implement core issue 1148, which eliminates copy elision from catch parameters and clarifies that copy elision cannot occur from function parameters (which we already implemented). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123982 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-20When building a user-defined conversion sequence, keep track of theDouglas Gregor
declaration that name lookup actually found, so that we can use it for access checking later on. Fixes <rdar://problem/8876150>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123867 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-20Sema::BuildCXXMemberCallExpr() can fail due to access or ambiguities,Douglas Gregor
so allow it to propagate the failure outward. Fixes the crashing part of <rdar://problem/8876150>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123863 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-19Change QualType::getTypePtr() to return a const pointer, then change aJohn McCall
thousand other things which were (generally inadvertantly) relying on that. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123814 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-18Fix warnings found by gcc-4.6, from -Wunused-but-set-variable andJeffrey Yasskin
-Wint-to-pointer-cast. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123719 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-27More __uuidof validation:Francois Pichet
1. Do not validate for uuid attribute if the type is template dependent. 2. Search every class declaration and definition for the uuid attribute. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122578 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-20XFAIL vtable-debug-info.cpp on WIN32 and fix curly brace.Francois Pichet
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122230 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-20Emit an error if operator __uuidof() is called on a type with no associated ↵Francois Pichet
GUID. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122226 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-19Motions towards simplifying how we deal with attribute-qualified function types.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122162 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-15Variadic templates: extend the Expr class with a bit that specifiesDouglas Gregor
whether the expression contains an unexpanded parameter pack, in the same vein as the changes to the Type hierarchy. Compute this bit within all of the Expr subclasses. This change required a bunch of reshuffling of dependency calculations, mainly to consolidate them inside the constructors and to fuse multiple loops that iterate over arguments to determine type dependence, value dependence, and (now) containment of unexpanded parameter packs. Again, testing is painfully sparse, because all of the diagnostics will change and it is more important to test the to-be-written visitor that collects unexpanded parameter packs. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@121831 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-14Restore r121752 without modification.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@121763 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-14Pull out r121752 in case it's causing the selfhost breakage.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@121759 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-14Factor out most of the extra state in a FunctionProtoType into a separateJohn McCall
class to be passed around. The line between argument and return types and everything else is kindof vague, but I think it's justifiable. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@121752 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-13Variadic templates: extend Type, NestedNameSpecifier, TemplateName,Douglas Gregor
and TemplateArgument with an operation that determines whether there are any unexpanded parameter packs within that construct. Use this information to diagnose the appearance of the names of parameter packs that have not been expanded (C++ [temp.variadic]p5). Since this property is checked often (every declaration, ever expression statement, etc.), we extend Type and Expr with a bit storing the result of this computation, rather than walking the AST each time to determine whether any unexpanded parameter packs occur. This commit is deficient in several ways, which will be remedied with future commits: - Expr has a bit to store the presence of an unexpanded parameter pack, but it is never set. - The error messages don't point out where the unexpanded parameter packs were named in the type/expression, but they should. - We don't check for unexpanded parameter packs in all of the places where we should. - Testing is sparse, pending the resolution of the above three issues. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@121724 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-08Remove the TypesCompatibleExprClass AST node. Merge its functionality into ↵Francois Pichet
BinaryTypeTraitExpr. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@121298 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-07Bump up property conversion earlier in the initialization process. FixesJohn McCall
the failed compile in PR8751. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@121192 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-07Kill FullExpr, as it was not, in fact, used anywhere in the code base.John McCall
I'm not opposed to the idea in concept, but there's no point in preserving abortive experiments. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@121083 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-07Type traits intrinsic implementation: __is_base_of(T, U)Francois Pichet
New AST node introduced: BinaryTypeTraitExpr; to be reused for more intrinsics. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@121074 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-06Rename CXXExprWithTemporaries -> ExprWithCleanups; there's no theoreticalJohn McCall
reason this is limited to C++, and it's certainly not limited to temporaries. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120996 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-04First pass at implementing the intent of ANSI C DR106.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120904 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-04dyn_cast else unreachable -> castJohn McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120902 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-04Although we currently have explicit lvalue-to-rvalue conversions, they'reJohn McCall
not actually frequently used, because ImpCastExprToType only creates a node if the types differ. So explicitly create an ICE in the lvalue-to-rvalue conversion code in DefaultFunctionArrayLvalueConversion() as well as several other new places, and consistently deal with the consequences throughout the compiler. In addition, introduce a new cast kind for loading an ObjCProperty l-value, and make sure we emit those nodes whenever an ObjCProperty l-value appears that's not on the LHS of an assignment operator. This breaks a couple of rewriter tests, which I've x-failed until future development occurs on the rewriter. Ted Kremenek kindly contributed the analyzer workarounds in this patch. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120890 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-02When we're performing an explicit cast of some sort, don't complainDouglas Gregor
about deprecated Objective-C pointer conversions. Plus, make sure to actually set an appropriate AssignmentAction when performing an implicit conversion from an InitializationSequence. Fixes regressions in the GCC DejaGNU testsuite. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120744 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-02Perform lvalue-to-rvalue at the end of an expression statement in C.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120646 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-24Switch a lot of call-sites over to using the new value-kind calculations.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120084 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18Add an assertion, fix a whole bunch of bugs, comment the assertionJohn McCall
out because there are still bugs left. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@119722 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18Calculate the value kind of an expression when it's created andJohn McCall
store it on the expression node. Also store an "object kind", which distinguishes ordinary "addressed" l-values (like variable references and pointer dereferences) and bitfield, @property, and vector-component l-values. Currently we're not using these for much, but I aim to switch pretty much everything calculating l-valueness over to them. For now they shouldn't necessarily be trusted. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@119685 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-15Assorted work leading towards the elimination of CK_Unknown.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@119138 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-13Introduce a null-to-pointer implicit cast kind.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@118966 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-02Properly handle temporaries that are created in a AsmStmt.Argyrios Kyrtzidis
Previously the temporaries would get destroyed before the asm call. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@118001 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-01Harden Sema::MaybeBindTotemporary.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@117954 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-26No really, we don't have a retain/release system for statements/expressionsJohn McCall
anymore. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@117357 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-25Improve the tracking of source locations for parentheses in constructor calls.Chandler Carruth
This adds them where missing, and traces them through PCH. We fix at least one bug in the extents found by the Index library, and make a lot of refactoring tools which care about the exact formulation of a constructor call easier to write. Also some minor cleanups to more consistently follow the friend pattern instead of the setter pattern when rebuilding a serialized AST. Patch originally by Samuel Benzaquen. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@117254 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-13There is no reason for dereferencing a pointer-to-member to requireDouglas Gregor
that the class type into which the pointer points be complete, even though the standard requires it. GCC/EDG do not require a complete type here, so we're calling this a problem with the standard. Fixes PR8328. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@116429 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-12Introduce support for emitting diagnostics (warnings + their notes)Douglas Gregor
that are suppressed during template argument deduction. This change queues diagnostics computed during template argument deduction. Then, if the resulting function template specialization or partial specialization is chosen by overload resolution or partial ordering (respectively), we will emit the queued diagnostics at that point. This addresses most of PR6784. However, the check for unnamed/local template arguments (which existed before this change) is still only skin-deep, and needs to be extended to look deeper into types. It must be improved to finish PR6784. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@116373 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-12PR8325: don't do destructor checking when a pointer is thrown.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@116336 91177308-0d34-0410-b5e6-96231b3b80d8
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