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2011-05-10Re-do R131114 without breaking code.Sean Hunt
I've edited one diagnostic which would print "copy constructor" for copy constructors and "constructor" for any other constructor. If anyone is extremely enamored with this, it can be reinstated with a simple boolean flag rather than calling getSpecialMember, which is inappropriate. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@131143 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-10Reimplement Sema::MatchTemplateParametersToScopeSpecifier() based onDouglas Gregor
the semantic context referenced by the nested-name-specifier rather than the syntactic form of the nested-name-specifier. The previous incarnation was based on my complete misunderstanding of C++ [temp.expl.spec]. The latest C++0x working draft clarifies the requirements here, and this rewrite is intended to follow that. Along the way, improve source location information in the diagnostics. For example, if we report that a specific type needs or doesn't need a 'template<>' header, we dig out that type in the nested-name-specifier and highlight its range. Fixes: PR5907, PR9421, PR8277, PR8708, PR9482, PR9668, PR9877, and <rdar://problem/9135379>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@131138 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-10Revert 131114. This fixes PR9884.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@131126 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-10Further implement defaulting constructors.Sean Hunt
Focus is on default constructors for the time being. Currently the exception specification and prototype are processed correctly. Codegen might work but in all likelihood doesn't. Note that due to an error, out-of-line defaulting of member functions is currently impossible. It will continue to that until I muster up the courage to admit that I secretly pray to epimetheus and that I need to rework the way default gets from Parse -> Sema. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@131115 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-10The last of the trivial constructor changes, make CXXSpecialMemberSean Hunt
reflect our new, more accurate AST. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@131114 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-09Ignore const/volatile/restrict qualifiers on anonymous structs andDouglas Gregor
unions. Fixes PR8326. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@131109 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-06Per Richard's suggestion, rename DefLoc to DefaultLoc where it appears.Sean Hunt
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@131018 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-06Add support for Microsoft __if_exists and __if_not_exists construct inside ↵Francois Pichet
function definition. Allow to include or exclude code depending on if a symbol exists or not. Just like a #ifdef but for C/C++ symbols. More doc: http://msdn.microsoft.com/en-us/library/x7wy9xh3(v=VS.100).aspx Support at class and namespace scopes will be added later. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@131014 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-06Do defaulted constructors properly.Sean Hunt
Explictly defaultedness is correctly reflected on the AST, but there are no changes to how that affects the definition of functions or much else really. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130974 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-06Revert r130912 in order to approach defaulted functions from the otherSean Hunt
direction and not introduce things in the wrong place three different times. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130968 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-05Implement support for C++0x alias templates.Richard Smith
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130953 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-05When providing code completions for an Objective-C property access,Douglas Gregor
also include methods with zero-argument selectors. Implements <rdar://problem/9048332>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130922 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-05Implement some framework for defaulted constructors.Sean Hunt
There's some unused stuff for now. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130912 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04Implement Sema::isExprCallable.Matt Beaumont-Gay
We can use this to produce nice diagnostics (and try to fixit-and-recover) in various cases where we might see "MyFunction" instead of "MyFunction()". The changes in SemaExpr are an example of how to use isExprCallable. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130878 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04Implement a better version of delegating constructor cycle detection.Sean Hunt
This is more efficient as it's all done at once at the end of the TU. This could still get expensive, so a flag is provided to disable it. As an added bonus, the diagnostics will now print out a cycle. The PCH test is XFAILed because we currently can't deal with a note emitted in the header and I, being tired, see no other way to verify the serialization of delegating constructors. We should probably address this problem /somehow/ but no good solution comes to mind. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130836 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-03Extend -Wnon-pod-memset to also encompass memcpy() and memmove(),Douglas Gregor
checking both the source and the destination operands, renaming the warning group to -Wnon-pod-memaccess and tweaking the diagnostic text in the process. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130786 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-03When parsing a template friend declaration we dropped the templateChandler Carruth
parameters on the floor in certain cases: class X { template <typename T> friend typename A<T>::Foo; }; This was parsed as a *non* template friend declaration some how, and received an ExtWarn. Fixing the parser to actually provide the template parameters to the freestanding declaration parse triggers the code which specifically looks for such constructs and hard errors on them. Along the way, this prevents us from trying to instantiate constructs like the above inside of a outer template. This is important as loosing the template parameters means we don't have a well formed declaration and template instantiation will be unable to rebuild the AST. That fixes a crash in the GCC test suite. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130772 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-02Add a warning for when reinterpret_cast leads to undefined behavior, patch ↵Argyrios Kyrtzidis
by Richard Trieu! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130703 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-01Store a parameter index and function prototype depth in everyJohn McCall
parameter node and use this to correctly mangle parameter references in function template signatures. A follow-up patch will improve the storage usage of these fields; here I've just done the lazy thing. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130669 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-01Fully implement delegating constructors!Sean Hunt
As far as I know, this implementation is complete but might be missing a few optimizations. Exceptions and virtual bases are handled correctly. Because I'm an optimist, the web page has appropriately been updated. If I'm wrong, feel free to downgrade its support categories. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130642 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-01Improve the documentation for the two ObjCDeclQualifiers so that IJohn McCall
stop considering whether I can compress them. :) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130633 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-28Parsing/AST support for Structured Exception HandlingJohn Wiegley
Patch authored by Sohail Somani. Provide parsing and AST support for Windows structured exception handling. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130366 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-28Implementation of Embarcadero array type traitsJohn Wiegley
Patch authored by John Wiegley. These are array type traits used for parsing code that employs certain features of the Embarcadero C++ compiler: __array_rank(T) and __array_extent(T, Dim). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130351 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-27Add a warning (-Wnon-pod-memset) for calls to memset() withChandler Carruth
a destination pointer that points to a non-POD type. This can flag such horrible bugs as overwriting vptrs when a previously POD structure is suddenly given a virtual method, or creating objects that crash on practically any use by zero-ing out a member when its changed from a const char* to a std::string, etc. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130299 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-27If a null statement was preceded by an empty macro keep its instantiation ↵Argyrios Kyrtzidis
source location in NullStmt. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130289 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-26Make yet another placeholder type, this one marking that an expression is a ↵John McCall
bound member function, i.e. something of the form 'x.f' where 'f' is a non-static member function. Diagnose this in the general case. Some of the new diagnostics are probably worse than the old ones, but we now get this right much more universally, and there's certainly room for improvement in the diagnostics. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130239 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-26Add ms_struct attribute on record typeeFariborz Jahanian
(and ignore it for now) - wip. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130224 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-25Recognize gcc's ms_struct pragma (and ignore for now).Fariborz Jahanian
This is wip. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130138 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-25t/clang/expr-traitsJohn Wiegley
Patch authored by David Abrahams. These two expression traits (__is_lvalue_expr, __is_rvalue_expr) are used for parsing code that employs certain features of the Embarcadero C++ compiler. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130122 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-24Synthesizing the definition of an implicit member is an AST modification, so ↵Sebastian Redl
notify any mutation listeners of it. This fixes a crasher in chained PCH, where an implicit destructor in a PCH gets a definition in a chained PCH, which is then lost. However, any further use of the destructor would cause its definition to be regenerated in the final file, hiding the bug. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130103 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-24Implement a new identifier-classification scheme where SemaDouglas Gregor
performs name lookup for an identifier and resolves it to a type/expression/template/etc. in the same step. This scheme is intended to improve both performance (by reducing the number of redundant name lookups for a given identifier token) and error recovery (by giving Sema a chance to correct type names before the parser has decided that the identifier isn't a type name). For example, this allows us to properly typo-correct type names at the beginning of a statement: t.c:6:3: error: use of undeclared identifier 'integer'; did you mean 'Integer'? integer *i = 0; ^~~~~~~ Integer t.c:1:13: note: 'Integer' declared here typedef int Integer; ^ Previously, we wouldn't give a Fix-It because the typo correction occurred after the parser had checked whether "integer" was a type name (via Sema::getTypeName(), which isn't allowed to typo-correct) and therefore decided to parse "integer * i = 0" as an expression. By typo-correcting earlier, we typo-correct to the type name Integer and parse this as a declaration. Moreover, in this context, we can also typo-correct identifiers to keywords, e.g., t.c:7:3: error: use of undeclared identifier 'vid'; did you mean 'void'? vid *p = i; ^~~ void and recover appropriately. Note that this is very much a work-in-progress. The new Sema::ClassifyName is only used for expression-or-declaration disambiguation in C at the statement level. The next steps will be to make this work for the same disambiguation in C++ (where functional-style casts make some trouble), then push it further into the parser to eliminate more redundant name lookups. Fixes <rdar://problem/7963833> for C and starts us down the path of <rdar://problem/8172000>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130082 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-23"note" location of forward class used as receiver ofFariborz Jahanian
a 'deprecated' selector in the diagnostics for the selector. // rdar://9309223 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130062 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-23Remove unnecessary const away cast in LateTemplateParserCallback.Francois Pichet
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130058 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-22Correctly emit a diagnostic for multiple templated function definitions in ↵Francois Pichet
-flate-template-parsing mode. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130030 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-22At the end of the translation unit, defining a vtable can introduceDouglas Gregor
new templates that need to be instantiated and vice-versa. Iterate until we've instantiated all required templates and defined all required vtables. Fixed PR9325 / <rdar://problem/9055177>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130023 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-22Add -fdelayed-template-parsing option. Using this option all templated ↵Francois Pichet
function definitions are parsed at the end of the translation unit only if it is required by an actual instantiation. As such all the symbols of the TU are available during name lookup. Using this flag is necessary for compatibility with Microsoft template code. This also provides some parsing speed improvement. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130022 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-21Add a fixit suggest for missing case keywords inside a switch scope. For ↵Richard Trieu
instance, in the following code, 'case ' will be suggested before the '1:' switch (x) { 1: return 0; default: return 1; } git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129943 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-15Initial work to improve documentation for Clang's diagnostics, from Matthieu ↵Douglas Gregor
Monrocq git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129614 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-15Support for C++11 (non-template) alias declarations.Richard Smith
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129567 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-15Improve diagnostics on GNU attributes by warning about attributes that ↵Ted Kremenek
should have no arguments or parameters. Patch by Michael Han! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129560 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-15fix a bunch of comment typos found by codespell. Patch byChris Lattner
Luis Felipe Strano Moraes! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129559 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-15C1X: implement generic selectionsPeter Collingbourne
As an extension, generic selection support has been added for all supported languages. The syntax is the same as for C1X. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129554 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-14Add support for C++0x's range-based for loops, as specified by the C++11 ↵Richard Smith
draft standard (N3291). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129541 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-14Implement ARM pcs attribute. Basically it's another way of calling ↵Anton Korobeynikov
convention selection (AAPCS or AAPCS+VFP), similar to fastcall / stdcall / whatevercall seen on x86. In particular, all library functions should always be AAPCS regardless of floating point ABI used. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129534 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-13In Microsoft mode, within class scope, if a CXXScopeSpec's type is equal to ↵Francois Pichet
the type of one of the base classes then downgrade the missing typename error to a warning. Up to now this is the only case I found where MSVC doesn't require "typename" at class scope. Really strange! This fixes 1 error when parsing the MSVC 2008 header files. Example: template<class T> class A { public: typedef int TYPE; }; template<class T> class B : public A<T> { public: A<T>::TYPE a; // no typename required because A<T> is a base class. }; git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129425 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-10Simplify calling CheckPlaceholderExpr, converge on it in a few places,John McCall
and move a vector-splat check to follow l-value conversion. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129254 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-09Fix a bunch of major problems with __unknown_anytype and properly testJohn McCall
for them. The only major missing feature is references. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129234 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-08Use ExprResult& instead of Expr *& in SemaJohn Wiegley
This patch authored by Eric Niebler. Many methods on the Sema class (e.g. ConvertPropertyForRValue) take Expr pointers as in/out parameters (Expr *&). This is especially true for the routines that apply implicit conversions to nodes in-place. This design is workable only as long as those conversions cannot fail. If they are allowed to fail, they need a way to report their failures. The typical way of doing this in clang is to use an ExprResult, which has an extra bit to signal a valid/invalid state. Returning ExprResult is de riguour elsewhere in the Sema interface. We suggest changing the Expr *& parameters in the Sema interface to ExprResult &. This increases interface consistency and maintainability. This interface change is important for work supporting MS-style C++ properties. For reasons explained here <http://lists.cs.uiuc.edu/pipermail/cfe-dev/2011-February/013180.html>, seemingly trivial operations like rvalue/lvalue conversions that formerly could not fail now can. (The reason is that given the semantics of the feature, getter/setter method lookup cannot happen until the point of use, at which point it may be found that the method does not exist, or it may have the wrong type, or overload resolution may fail, or it may be inaccessible.) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129143 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-07In C++ the argument of logical not should always be bool. Added missing ↵Abramo Bagnara
implicit cast for scalars. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129066 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-07Basic, untested implementation for an "unknown any" type requested by LLDB.John McCall
The idea is that you can create a VarDecl with an unknown type, or a FunctionDecl with an unknown return type, and it will still be valid to access that object as long as you explicitly cast it at every use. I'm still going back and forth about how I want to test this effectively, but I wanted to go ahead and provide a skeletal implementation for the LLDB folks' benefit and because it also improves some diagnostic goodness for placeholder expressions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129065 91177308-0d34-0410-b5e6-96231b3b80d8