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path: root/lib/Sema/SemaDeclCXX.cpp
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2012-04-29[class.copy]p23: Fix an assertion caused by incorrect argument numbering in aRichard Smith
diagnostic, add a test for this paragraph, and tighten up the diagnostic wording a little. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@155784 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-27PR12224 (sort of): Diagnose inheriting constructor declarations in C++11 mode.Richard Smith
We do not support IRGen for these, and get some parts of the semantic analysis wrong. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@155728 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-25PR12625: Cope with classes which have incomplete base or member types:Richard Smith
Don't try to query whether an incomplete type has a trivial copy constructor when determining whether a move constructor should be declared. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@155575 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-24PR12629: Cope with parenthesized function types when attaching a delayedRichard Smith
exception specification to a function. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@155424 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-21Fix regression in r154844. If necessary, defer computing adjusted destructorRichard Smith
exception specifications in C++11 until after we've parsed the exception specifications for nested classes. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@155293 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-21SemaDeclCXX.cpp: Fix utf8 in comment.NAKAMURA Takumi
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@155279 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-20Fix bug where a class's (deleted) copy constructor would be implicitly given aRichard Smith
non-const reference parameter type if the class had any subobjects with deleted copy constructors. This causes a rejects-valid if the class's copy constructor is explicitly defaulted (as happens for some implementations of std::pair etc). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@155218 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-17Implement DR1330 in C++11 mode, to support libstdc++4.7 which uses it.Richard Smith
We have a new flavor of exception specification, EST_Uninstantiated. A function type with this exception specification carries a pointer to a FunctionDecl, and the exception specification for that FunctionDecl is instantiated (if needed) and used in the place of the function type's exception specification. When a function template declaration with a non-trivial exception specification is instantiated, the specialization's exception specification is set to this new 'uninstantiated' kind rather than being instantiated immediately. Expr::CanThrow has migrated onto Sema, so it can instantiate exception specs on-demand. Also, any odr-use of a function triggers the instantiation of its exception specification (the exception specification could be needed by IRGen). In passing, fix two places where a DeclRefExpr was created but the corresponding function was not actually marked odr-used. We used to get away with this, but don't any more. Also fix a bug where instantiating an exception specification which refers to function parameters resulted in a crash. We still have the same bug in default arguments, which I'll be looking into next. This, plus a tiny patch to fix libstdc++'s common_type, is enough for clang to parse (and, in very limited testing, support) all of libstdc++4.7's standard headers. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154886 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-16Implement the last part of C++ [class.mem]p2, delaying the parsing ofDouglas Gregor
exception specifications on member functions until after the closing '}' for the containing class. This allows, for example, a member function to throw an instance of its own class. Fixes PR12564 and a fairly embarassing oversight in our C++98/03 support. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154844 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-16Implement C++11 [expr.prim.general]p3, which permits the use of 'this'Douglas Gregor
in the declaration of a non-static member function after the (optional) cv-qualifier-seq, which in practice means in the exception specification and late-specified return type. The new scheme here used to manage 'this' outside of a member function scope is more general than the Scope-based mechanism previously used for non-static data member initializers and late-parsesd attributes, because it can also handle the cv-qualifiers on the member function. Note, however, that a separate pass is required for static member functions to determine whether 'this' was used, because we might not know that we have a static function until after declaration matching. Finally, this introduces name mangling for 'this' and for the implicit 'this', which is intended to match GCC's mangling. Independent verification for the new mangling test case would be appreciated. Fixes PR10036 and PR12450. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154799 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-09My original patch missed the virtual-base case for destroyingJohn McCall
base-class subojects. Incidentally, thinking about virtual bases makes it clear to me that we're not appropriately computing the access to the virtual base's member because we're not computing the best possible access to the virtual base at all; in fact, we're basically assuming it's public. I'll file a separate PR about that. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154346 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-09Fix the access check performed as part of the determination of whetherJohn McCall
to define a special member function as deleted so that it properly establishes an object context for the accesses to the base subobject members. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154343 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-07Fix several problems with protected access control:John McCall
- The [class.protected] restriction is non-trivial for any instance member, even if the access lacks an object (for example, if it's a pointer-to-member constant). In this case, it is equivalent to requiring the naming class to equal the context class. - The [class.protected] restriction applies to accesses to constructors and destructors. A protected constructor or destructor can only be used to create or destroy a base subobject, as a direct result. - Several places were dropping or misapplying object information. The standard could really be much clearer about what the object type is supposed to be in some of these accesses. Usually it's easy enough to find a reasonable answer, but still, the standard makes a very confident statement about accesses to instance members only being possible in either pointer-to-member literals or member access expressions, which just completely ignores concepts like constructor and destructor calls, using declarations, unevaluated field references, etc. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154248 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-05Point the caret at the error for the 'expected namespace name' diagnostic inRichard Smith
a namespace alias declaration. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154138 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-04Remove dead assignment to local variable.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@153985 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-02PR10217 diagnostic fix: don't say 'copy constructor' when we meanRichard Smith
'copy assignment operator'. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@153897 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-02Finish PR10217: Ensure we say that a special member was implicitly, notRichard Smith
explicitly, deleted in all relevant cases, and explain why. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@153894 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-02Implement DR1402: if a field or base class is not movable, the derived class'sRichard Smith
move constructor/move assignment operator are not declared, rather than being defined as deleted, so move operations on the derived class fall back to copying rather than moving. If a move operation on the derived class is explicitly defaulted, the unmovable subobject will be copied instead of being moved. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@153883 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-02Basic semantic analysis support for inheriting constructor declarations inRichard Smith
dependent contexts. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@153858 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-30PR10217: Provide diagnostics explaining why an implicitly-deleted specialRichard Smith
member function is deleted. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@153773 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-29Refactor special member function deletion. No functionality change.Richard Smith
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@153673 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-28Unify and fix our checking of C++ [dcl.meaning]p1's requirementsDouglas Gregor
concerning qualified declarator-ids. We now diagnose extraneous qualification at namespace scope (which we had previously missed) and diagnose these qualification errors for all kinds of declarations; it was rather uneven before. Fixes <rdar://problem/11135644>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@153577 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-16Skip through transparent contexts when deciding where to add a friend function.Nick Lewycky
This fixes g++.dg/parse/friend5.C. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152938 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-13Ensure that default arguments are handled correctly in sub scopes. For example:James Molloy
void f () { int g (int a, int b=4); { int g(int a, int b=5); } } should compile. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152621 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-13Fix PR10447: lazily building name lookup tables for DeclContexts was broken.Richard Smith
The deferred lookup table building step couldn't accurately tell which Decls should be included in the lookup table, and consequently built different tables in some cases. Fix this by removing lazy building of DeclContext name lookup tables. In practice, the laziness was frequently not worthwhile in C++, because we performed lookup into most DeclContexts. In C, it had a bit more value, since there is no qualified lookup. In the place of lazy lookup table building, we simply don't build lookup tables for function DeclContexts at all. Such name lookup tables are not useful, since they don't capture the scoping information required to correctly perform name lookup in a function scope. The resulting performance delta is within the noise on my testing, but appears to be a very slight win for C++ and a very slight loss for C. The C performance can probably be recovered (if it is a measurable problem) by avoiding building the lookup table for the translation unit. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152608 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-11Unify naming of LangOptions variable/get function across the Clang stack ↵David Blaikie
(Lex to AST). The member variable is always "LangOpts" and the member function is always "getLangOpts". Reviewed by Chris Lattner git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152536 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-10PR12225: The requirement that literal operators be namespace-scope functionsRichard Smith
does not imply that such functions can't be declared at block scope. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152509 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-10Remove BlockDeclRefExpr and introduce a bit on DeclRefExpr toJohn McCall
track whether the referenced declaration comes from an enclosing local context. I'm amenable to suggestions about the exact meaning of this bit. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152491 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-10Only make a call to a copy constructor elidable if in fact we areDouglas Gregor
doing a copy. Fixes PR12139. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152485 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-09[AST/Sema/libclang] Replace getSourceRange().getBegin() with getLocStart().Daniel Dunbar
- getSourceRange().getBegin() is about as awesome a pattern as .copy().size(). I already killed the hot paths so this doesn't seem to impact performance on my tests-of-the-day, but it is a much more sensible (and shorter) pattern. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152419 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-09Literal operators can't have default arguments.Richard Smith
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152394 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-09Support for raw and template forms of numeric user-defined literals,Richard Smith
and lots of tidying up. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152392 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-08Implement C++11 [lex.ext]p10 for string and character literals: a ud-suffix notRichard Smith
starting with an underscore is ill-formed. Since this rule rejects programs that were using <inttypes.h>'s macros, recover from this error by treating the ud-suffix as a separate preprocessing-token, with a DefaultError ExtWarn. The approach of treating such cases as two tokens is under discussion for standardization, but is in any case a conforming extension and allows existing codebases to keep building while the committee makes up its mind. Reword the warning on the definition of literal operators not starting with underscores (which are, strangely, legal) to more explicitly state that such operators can't be called by literals. Remove the special-case diagnostic for hexfloats, since it was both triggering in the wrong cases and incorrect. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152287 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-05static_assert: Allow any string-literal as the message, not just a characterRichard Smith
string literal, and adjust the diagnostic code to match. This also causes us to escape any control characters in the message. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152069 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-05Avoid double lookup.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152033 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-04Add tests for [over.literal]. Fix a few bugs which were exposed by the tests.Richard Smith
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151997 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-01Implement "optimization" for lambda-to-block conversion which inlines the ↵Eli Friedman
generated block literal for lambdas which are immediately converted to block pointer type. This simplifies the AST, avoids an unnecessary copy of the lambda and makes it much easier to avoid copying the result onto the heap. Note that this transformation has a substantial semantic effect outside of ARC: it gives the converted lambda lifetime semantics similar to a block literal. With ARC, the effect is much less obvious because the lifetime of blocks is already managed. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151797 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-27Ensure that we delete default constructors in the right cases. Don't delete theRichard Smith
default constructor of a union if it has a const member with no user-provided default constructor. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151516 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-26Ensure that we delete destructors in the right cases. Specifically:Richard Smith
- variant members with nontrivial destructors make the containing class's destructor deleted - check for a virtual destructor after checking for overridden methods in the base class(es) - check for an inaccessible operator delete for a class with a virtual destructor. Do not try to call an anonymous union field's destructor from the destructor of the containing class. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151483 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-26Make sure we don't try to produce a definition of an implicitly-deleted functionRichard Smith
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151478 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-26Special members which are defaulted or deleted on their first declaration areRichard Smith
trivial if the implicit declaration would be. Don't forget to set the Trivial flag on the special member as well as on the class. It doesn't seem ideal that we have two separate mechanisms for storing this information, but this patch does not attempt to address that. This leaves us in an interesting position where the has_trivial_X trait for a class says 'yes' for a deleted but trivial X, but is_trivially_Xable says 'no'. This seems to be what the standard requires. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151465 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-25Work-in-progress for lambda conversion-to-block operator. Still need to ↵Eli Friedman
implement the retain+autorelease outside of ARC, and there's a bug that causes the generated code to crash in ARC (which I think is unrelated to my code, although I'm not completely sure). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151428 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-24Implement C++11 [over.match.copy]p1b2, which allows the use ofDouglas Gregor
explicit conversion functions to initialize the argument to a copy/move constructor that itself is the subject of direct initialization. Since we don't have that much context in overload resolution, we end up threading more flags :(. Fixes <rdar://problem/10903741> / PR10456. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151409 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-24C++11 [class.ctor]p5 says thatDouglas Gregor
A defaulted default constructor for a class X is defined as deleted if [...] - X is a union and all of its variant members are of const-qualified type. A pedantic reading therefore says that union X { }; has a deleted default constructor, which is both silly and almost certainly unintended. Pretend as if this this read - X is a union with one or more variant members, and all of its variant members are of const-qualified type. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151394 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-23Replace some DenseSets with SmallPtrSets. Apart from the "small" ↵Benjamin Kramer
optimization, the current implementation is also a denser. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151257 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-22Fix parsing and processing initializer lists in return statements and as ↵Sebastian Redl
direct member initializers. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151155 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-22Generate an AST for the conversion from a lambda closure type to aDouglas Gregor
block pointer that returns a block literal which captures (by copy) the lambda closure itself. Some aspects of the block literal are left unspecified, namely the capture variable (which doesn't actually exist) and the body (which will be filled in by IRgen because it can't be written as an AST). Because we're switching to this model, this patch also eliminates tracking the copy-initialization expression for the block capture of the conversion function, since that information is now embedded in the synthesized block literal. -1 side tables FTW. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151131 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-21Implement name mangling for lambda expressions that occur within theDouglas Gregor
initializers of data members (both static and non-static). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151017 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-20Fix a constexpr FIXME: When implicitly instantiating the primary template for anRichard Smith
explicit specialization of a function template, mark the instantiation as constexpr if the specialization is, rather than requiring them to match. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151001 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-19Emit a warning when list-initializing a std::initializer_list member.Sebastian Redl
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150933 91177308-0d34-0410-b5e6-96231b3b80d8
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