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2011-03-01Push nested-name-specifier source location information into elaboratedDouglas Gregor
name types, e.g., "enum clang::NestedNameSpecifier::SpecifierKind". Aside from the normal changes, this also required some tweaks to the parser. Essentially, when we're looking at a type name (via getTypeName()) specifically for the purpose of creating an annotation token, we pass down the flag that asks for full type-source location information to be stored within the returned type. That way, we retain source-location information involving nested-name-specifiers rather than trying to reconstruct that information later, long after it's been lost in the parser. With this change, test/Index/recursive-cxx-member-calls.cpp is showing much improved results again, since that code has lots of nested-name-specifiers. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126737 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-28Refactor the construction of nested-name-specifiers withDouglas Gregor
source-location information into a NestedNameSpecifierLocBuilder class, which lives within the AST library and centralize all knowledge of the format of nested-name-specifier location information here. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126716 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-28Teach Sema::CheckTypenameType to use nested-name-specifiers withDouglas Gregor
source-location information. We don't actually preserve this information in any of the resulting TypeLocs (yet), so it doesn't matter. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126693 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-28When we encounter a dependent template name within aDouglas Gregor
nested-name-specifier, e.g., T::template apply<U>:: represent the dependent template name specialization as a DependentTemplateSpecializationType, rather than a TemplateSpecializationType with a dependent TemplateName. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126593 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-27Eliminate a silly little Parse/Sema dance when parsing typenameDouglas Gregor
specifiers such as typename T::template apply<U> Previously, we would turn T::template apply<U> into a TemplateSpecializationType. Then, we'd reprocess that TemplateSpecializationType and turn it into either a TemplateSpecializationType wrapped in an ElaboratedType (when we could resolve "apply" to a template declaration) or a DependentTemplateSpecializationType. We now produce the same ASTs but without generating the intermediate TemplateSpecializationType. The end goal here is to avoid generating TemplateSpecializationTypes with dependent template-names, ever. We're not there yet. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126589 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-26Implement delegating constructors partially.Sean Hunt
This successfully performs constructor lookup and verifies that a delegating initializer is the only initializer present. This does not perform loop detection in the initialization, but it also doesn't codegen delegating constructors at all, so this won't cause runtime infinite loops yet. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126552 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-25Remove the FIXME I introduced last night, and pull the logic forChandler Carruth
marking selected overloads into the callers. This allows a few callers to skip it altogether (they would have anyways because they weren't interested in successful overloads) or defer until after further checks take place much like the check required for PR9323 to avoid marking unused copy constructors. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126503 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-25Rough fix for PR9323 that prevents Clang from marking copy constructorChandler Carruth
declarations as referenced when in fact we're not going to even form a call in the AST. This is significant because we attempt to allow as an extension classes with intentionally private and undefined copy constructors to have temporaries bound to references, and so shouldn't warn about the lack of definition for that copy constructor when the class is internal. Doug, John wasn't really satisfied with the presence of overloading at all. This is a stop-gap and there may be a better solution. If you can give me some hints for how you'd prefer to see this solved, I'll happily switch things over. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126480 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-25Use NestedNameSpecifierLoc within out-of-line variables, function, andDouglas Gregor
tag definitions. Also, add support for template instantiation of NestedNameSpecifierLocs. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126470 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-24Retain complete source-location information for C++Douglas Gregor
nested-name-specifiers throughout the parser, and provide a new class (NestedNameSpecifierLoc) that contains a nested-name-specifier along with its type-source information. Right now, this information is completely useless, because we don't actually store the source-location information anywhere in the AST. Call this Step 1/N. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126391 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-24From Vassil Vassilev:Axel Naumann
Add an interface for last resort, unqualified lookup. It can provide results for unqualified lookup when Sema fails to find anything itself. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126387 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-24Teach NestedNameSpecifier to keep track of namespace aliases the sameDouglas Gregor
way it keeps track of namespaces. Previously, we would map from the namespace alias to its underlying namespace when building a nested-name-specifier, losing source information in the process. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126358 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-24Tweak the CXXScopeSpec API a bit, so that we require theDouglas Gregor
nested-name-specifier and source range to be set at the same time. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126347 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-24Teach CXXScopeSpec to handle the extension of a nested-name-specifierDouglas Gregor
with another component in the nested-name-specifiers, updating its representation (a NestedNameSpecifier) and source-location information (currently a SourceRange) simultaneously. This is groundwork for adding source-location information to nested-name-specifiers. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126346 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-23Implement a warning for known shift overflows on constant shiftChandler Carruth
expressions. Consider the code: int64_t i = 10 << 30; This compiles fine, but most developers expect it to produce the value for 10 gigs, not -2 gigs. This is actually undefined behavior because the LHS is a signed integer type. The warning is currently gated behind -Wshift-overflow. There is a special case where only the sign bit is overridden that gets a custom error message and is by default ignored. This case is much less likely to cause observed buggy behavior, it's just undefined behavior according to the spec. This warning can be enabled with -Wshift-sign-overflow. Original patch by Oleg Slezberg, with style tweaks and some correctness fixes by me. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126342 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-23Fix the behavior of -Wignored-qualifiers on return type qualifiers inChandler Carruth
several ways. We now warn for more of the return types, and correctly locate the ignored ones. Also adds fix-it hints to remove the ignored qualifiers. Fixes much of PR9058, although not all of it. Patch by Hans Wennborg, a couple of minor style tweaks from me. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126321 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-23Add doxygen comments to Sema::DiagRuntimeBehavior().Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126296 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-23Enhance Sema::DiagRuntimeBehavior() to delay some diagnostics to see if the ↵Ted Kremenek
related code is reachable. This suppresses some diagnostics that occur in unreachable code (e.g., -Warray-bound). We only pay the cost of doing the reachability analysis when we issue one of these diagnostics. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126290 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-23Have IdempotentOperationsChecker pull its CFGStmtMap from AnalysisContext.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126288 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-23Issue AnalysisBasedWarnings as part of calling ↵Ted Kremenek
Sema::PopBlockOrFunctionScope(). No real functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126287 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-23Update Sema::DiagRuntimeBehavior() to take an optional Stmt* to indicate the ↵Ted Kremenek
code the diagnostic is associated with. This Stmt* is unused, but we will use it shortly for pruning diagnostics associated with unreachable code. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126286 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-23Fix PR9276: We were missing the checks for auto deducing to different types ↵Richard Smith
in the same declaration group in the template instantiation case. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126279 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-22Implement the GNU C extension which permits the initialization of anDouglas Gregor
array from a constant array compound literal. Fixes PR9261. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126230 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-21Warn when type modifiers on objc method declarations inFariborz Jahanian
protocols do not match with method implementation. // rdar://7076235 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126162 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-21Tweaks to C++0x deduced auto type support:Richard Smith
* Flag indicating 'we're parsing this auto typed variable's initializer' moved from VarDecl to Sema * Temporary template parameter list for auto deduction is now allocated on the stack. * Deduced 'auto' types are now uniqued. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126139 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-20Implement the C++0x deduced 'auto' feature.Richard Smith
This fixes PR 8738, 9060 and 9132. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126069 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-19Handle the resolution of a reference to a function template (whichDouglas Gregor
includes explicitly-specified template arguments) to a function template specialization in cases where no deduction is performed or deduction fails. Patch by Faisal Vali, fixes PR7505! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126048 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-19Warn about code that uses variables and functions with internal linkageJohn McCall
without defining them. This should be an error, but I'm paranoid about "uses" that end up not actually requiring a definition. I'll revisit later. Also, teach IR generation to not set internal linkage on variable declarations, just for safety's sake. Doing so produces an invalid module if the variable is not ultimately defined. Also, fix several places in the test suite where we were using internal functions without definitions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126016 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-18Initial steps to improve diagnostics when there is a NULL andChandler Carruth
a non-pointer on the two sides of a conditional expression. Patch by Stephen Hines and Mihai Rusu. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125995 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-18When code-completing a case statement for a switch on a value ofDouglas Gregor
enumeration type, prioritize the enumeration constants and don't provide completions for any other expressions. Fixes <rdar://problem/7283668>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125991 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-18implement basic support for __label__. I wouldn't be shocked if there areChris Lattner
bugs from other clients that don't expect to see a LabelDecl in a DeclStmt, but if so they should be easy to fix. This implements most of PR3429 and rdar://8287027 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125817 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-18Switch labels over to using normal name lookup, instead of their Chris Lattner
own weird little DenseMap. Hey look, we now emit unused label warnings deterministically, amazing. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125813 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-17make block bodies handle undefined labels just like functions.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125799 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-17Clean up the style of this function to match the conventions in the restChandler Carruth
of Clang, and reflows the code a bit to make it easier to read. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125773 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-17Step #2/N of __label__ support: keep pushing LabelDecl forward,Chris Lattner
making them be template instantiated in a more normal way and make them handle attributes like other decls. This fixes the used/unused label handling stuff, making it use the same infrastructure as other decls. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125771 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-17Inline LocalInstantiationScope::getInstantiationOf into its oneChris Lattner
client, making room for future hacking. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125770 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-17remove some dead overloads.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125768 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-17Change the representation of GNU ?: expressions to use a different expressionJohn McCall
class and to bind the shared value using OpaqueValueExpr. This fixes an unnoticed problem with deserialization of these expressions where the deserialized form would lose the vital pointer-equality trait; or rather, it fixes it because this patch also does the right thing for deserializing OVEs. Change OVEs to not be a "temporary object" in the sense that copy elision is permitted. This new representation is not totally unawkward to work with, but I think that's really part and parcel with the semantics we're modelling here. In particular, it's much easier to fix things like the copy elision bug and to make the CFG look right. I've tried to update the analyzer to deal with this in at least some obvious cases, and I think we get a much better CFG out, but the printing of OpaqueValueExprs probably needs some work. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125744 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-17Step #1/N of implementing support for __label__: split labels intoChris Lattner
LabelDecl and LabelStmt. There is a 1-1 correspondence between the two, but this simplifies a bunch of code by itself. This is because labels are the only place where we previously had references to random other statements, causing grief for AST serialization and other stuff. This does cause one regression (attr(unused) doesn't silence unused label warnings) which I'll address next. This does fix some minor bugs: 1. "The only valid attribute " diagnostic was capitalized. 2. Various diagnostics printed as ''labelname'' instead of 'labelname' 3. This reduces duplication of label checking between functions and blocks. Review appreciated, particularly for the cindex and template bits. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125733 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-17tidy upChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125723 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-17Implement code completion results for the Objective-C Key-Value CodingDouglas Gregor
(KVC) and Key-Value Observing (KVO) protocols. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125696 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-16Add trivial buffer overflow checking in Sema.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125640 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-15Implement a special code-completion pattern for "IBAction". FixesDouglas Gregor
<rdar://problem/8767704>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125604 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-15When code-completing within a list of declaration specifiers,Douglas Gregor
separately handle the case of a local declaration-specifier list, including all types in the set of options. Fixes <rdar://problem/8790735> and <rdar://problem/8662831>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125594 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-14Provide overload diagnostics when explicit casts involving class types fail.John McCall
PR8626. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125506 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-14When parsing an out-of-line member function declaration, we must delayJohn McCall
access-control diagnostics which arise from the portion of the declarator following the scope specifier, just in case access is granted by friending the individual method. This can also happen with in-line member function declarations of class templates due to templated-scope friend declarations. We were really playing fast-and-loose before with this sort of thing, and it turned out to work because *most* friend functions are in file scope. Making us delay regardless of context exposed several bugs with how we were manipulating delay. I ended up needing a concept of a context that's independent of the declarations in which it appears, and then I actually had to make some things save contexts correctly, but delay should be much cleaner now. I also encapsulated all the delayed-diagnostics machinery in a single subobject of Sema; this is a pattern we might want to consider rolling out to other components of Sema. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125485 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-14OpenCL: add support for __kernel, kernel keywords and EXTENSION,Peter Collingbourne
FP_CONTRACT pragmas. Patch originally by ARM. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125475 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-14Move support for "#pragma STDC FP_CONTRACT" to Parser; add Sema actionsPeter Collingbourne
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125474 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-12Implement objective-c++'s block pointer type matching involvingFariborz Jahanian
types which are contravariance in argument types and covariance in return types. // rdar://8979379. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125445 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-11Reject forbidden storage class specifiers in OpenCL. Patch by George Russell!Peter Collingbourne
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125399 91177308-0d34-0410-b5e6-96231b3b80d8
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