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path: root/lib/Sema/SemaDecl.cpp
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2010-03-07Fix for PR6294: we should only delay recording nested dynamic classes if theyEli Friedman
are lexically nested. Othewise, we never end up recording semantically nested classes. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97900 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-02Diagnose the declaration of enum templates. Also, be a bit moreDouglas Gregor
careful about value-dependent enumerators. Fixes PR5786. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97570 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-01Keep an explicit stack of function and block scopes, each element ofDouglas Gregor
which has the label map, switch statement stack, etc. Previously, we had a single set of maps in Sema (for the function) along with a stack of block scopes. However, this lead to funky behavior with nested functions, e.g., in the member functions of local classes. The explicit-stack approach is far cleaner, and we retain a 1-element cache so that we're not malloc/free'ing every time we enter a function. Fixes PR6382. Also, tweaked the unused-variable warning suppression logic to look at errors within a given Scope rather than within a given function. The prior code wasn't looking at the right number-of-errors count when dealing with blocks, since the block's count would be deallocated before we got to ActOnPopScope. This approach works with nested blocks/functions, and gives tighter error recovery. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97518 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-01Fix the lookup of names used in a friend declaration to not attempt toChandler Carruth
re-declare them. This fixes PR6317. Also add the beginnings of an interesting test case for p1 of [class.friend] which also covers PR6317. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97499 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-01fix PR5933: don't warn about unused variables if a function has other errors ↵Chris Lattner
in it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97498 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-01Implement jump checking for initialized c++ variables, implementingChris Lattner
a fixme and PR6451. Only perform jump checking if the containing function has no errors, and add the infrastructure needed to do this. On the testcase in the PR, we produce: t.cc:6:3: error: illegal goto into protected scope goto later; ^ t.cc:7:5: note: jump bypasses variable initialization X x; ^ git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97497 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-25Fix a really trivial crasher and begin fleshing out one of the namespace testChandler Carruth
cases. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97134 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23More Sema check for ivars in class continuation.Fariborz Jahanian
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97002 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-22Early support for declaring ivars in class extensions. wip.Fariborz Jahanian
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@96819 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-22Add 'previous declaration is here' note for param redefinition Chris Lattner
errors, e.g.: t.c:1:21: error: redefinition of parameter 'x' int test(int x, int x); ^ t.c:1:14: note: previous declaration is here int test(int x, int x); ^ git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@96769 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
2010-02-21Make Decl::isOutOfLine() virtual, and use that to determine when definitionsChandler Carruth
are for out of line declarations more easily. This simplifies the logic and handles the case of out-of-line class definitions correctly. Fixes PR6107. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@96729 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-21Don't warn about functions redeclared without the dllimport attribute whenTed Kremenek
-fms-extensions is enabled. Fixes <rdar://problem/7669559>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@96721 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-19Patch removes IVars list from ObjCInterfaceDecl andFariborz Jahanian
instead relies on their DeclContext for iteration, etc. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@96638 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-18Allow redefinitions of extern inline functions in GNU89 mode, just as GCCCharles Davis
does. Fixes PR5253. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@96553 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-17When diagnosing enumerator values outside of the range of 'int', beDouglas Gregor
sure that we get the "too large" vs. "too small" part of the diagnostic correct. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@96524 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-17Do not add functions marked with the unused attribute to the list of unused ↵Tanya Lattner
functions to warn about. Update test case. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@96452 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-12Complain if block-literal expression's parameter name isFariborz Jahanian
missing (in c/objc mode). Fixes radar 7528255. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@96017 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-12Implementing unused function warning.Tanya Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95940 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-11Remove use of 'std::string' from Attr objects, using instead a byteTed Kremenek
array allocated using the allocator in ASTContext. This addresses these strings getting leaked when using a BumpPtrAllocator (in ASTContext). Fixes: <rdar://problem/7636765> git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95853 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
2010-02-11Eliminate the ASTContext parameter from RecordDecl::getDefinition()Douglas Gregor
and CXXRecordDecl::getDefinition(); it's totally unnecessary. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95836 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-09Migrate the mish-mash of declaration checks inDouglas Gregor
Sema::ActOnUninitializedDecl over to InitializationSequence (with default initialization), eliminating redundancy. More importantly, we now check that a const definition in C++ has an initilizer, which was an #if 0'd code for many, many months. A few other tweaks were needed to get everything working again: - Fix all of the places in the testsuite where we defined const objects without initializers (now that we diagnose this issue) - Teach instantiation of static data members to find the previous declaration, so that we build proper redeclaration chains. Previously, we had the redeclaration chain but built it too late to be useful, because... - Teach instantiation of static data member definitions not to try to check an initializer if a previous declaration already had an initializer. This makes sure that we don't complain about static const data members with in-class initializers and out-of-line definitions. - Move all of the incomplete-type checking logic out of Sema::FinalizeDeclaratorGroup; it makes more sense in ActOnUnitializedDecl. There may still be a few places where we can improve these diagnostics. I'll address that as a separate commit. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95657 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-06Silence GCC warning and stay in 80 cols.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95494 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-06Implement a warning diagnostic for weak vtables. Fixes PR6116.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95472 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-05Standardize the parsing of function type attributes in a way thatJohn McCall
follows (as conservatively as possible) gcc's current behavior: attributes written on return types that don't apply there are applied to the function instead, etc. Only parse CC attributes as type attributes, not as decl attributes; don't accepet noreturn as a decl attribute on ValueDecls, either (it still needs to apply to other decls, like blocks). Consistently consume CC/noreturn information throughout codegen; enforce this by removing their default values in CodeGenTypes::getFunctionInfo(). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95436 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-05A dependent initializer with zero arguments should return a NULLDouglas Gregor
initializer (for no initialization) rather than a ParenListExpr with zero arguments in it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95382 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-05A function declarator with a non-identifier name in an anonymous classDouglas Gregor
is a constructor for that class, right? Fixes PR6238. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95367 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
2010-02-04Allow calling convention attributes to apply to types. Patch by Chip Davis!John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95291 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-03Don't do an expensive definition check where a cheap 'is this C?' check ↵Sebastian Redl
suffices. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95188 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-03Simplify setting of DeclContext for @catch variableFariborz Jahanian
(per Doug's comment). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95169 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-03Fix DeclContext of an objective-c @catch variableFariborz Jahanian
declaration. Fixes radar 7590273. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95164 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-02Implement promotion for enumeration types.Douglas Gregor
WHAT!?! It turns out that Type::isPromotableIntegerType() was not considering enumeration types to be promotable, so we would never do the promotion despite having properly computed the promotion type when the enum was defined. Various operations on values of enum type just "worked" because we could still compute the integer rank of an enum type; the oddity, however, is that operations such as "add an enum and an unsigned" would often have an enum result type (!). The bug actually showed up as a spurious -Wformat diagnostic (<rdar://problem/7595366>), but in theory it could cause miscompiles. In this commit: - Enum types with a promotion type of "int" or "unsigned int" are promotable. - Tweaked the computation of promotable types for enums - For all of the ABIs, treat enum types the same way as their underlying types (*not* their promotion types) for argument passing and return values - Extend the ABI tester with support for enumeration types git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95117 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-02Check for redefinitions in MergeVarDecl. This finds redefinitions of globals ↵Sebastian Redl
without an initializer in C++ and thus fixes PR5451. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95098 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-02Mark dtors for parameter variables and eliminate some redundant type munging.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95079 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-01Improve handling of enumerator values for C and C++, including:Douglas Gregor
- In C++, prior to the closing '}', set the type of enumerators based on the type of their initializer. Don't perform unary conversions on the enumerator values. - In C++, handle overflow when an enumerator has no initializer and its value cannot be represented in the type of the previous enumerator. - In C, handle overflow more gracefully, by complaining and then falling back to the C++ rules. - In C, if the enumerator value is representable in an int, convert the expression to the type 'int'. Fixes PR5854 and PR4515. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95031 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-01In C++, an initializer on a variable doesn't necessarily mean it's the ↵Sebastian Redl
definition. With that in mind, rename getDefinition to getAnyInitializer (to distinguish it from getInit) and reimplement it in terms of isThisDeclarationADefinition. Update all code to use this new function. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94999 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-31Add VarDecl::isThisDeclarationADefinition(), which properly encapsulates the ↵Sebastian Redl
logic for when a variable declaration is a (possibly tentativ) definition. Add a few functions building on this, and shift C tentative definition handling over to this new functionality. This shift also kills the Sema::TentativeDefinitions map and instead simply stores all declarations in the renamed list. The correct handling for multiple tentative definitions is instead shifted to the final walk of the list. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94968 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-27Implement access control for overloaded functions. Suppress access controlJohn McCall
diagnostics in "early" lookups, such as during typename checks and when building unresolved lookup expressions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94647 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-25Split libAnalysis into two libraries: libAnalysis and libChecker.Ted Kremenek
(1) libAnalysis is a generic analysis library that can be used by Sema. It defines the CFG, basic dataflow analysis primitives, and inexpensive flow-sensitive analyses (e.g. LiveVariables). (2) libChecker contains the guts of the static analyzer, incuding the path-sensitive analysis engine and domain-specific checks. Now any clients that want to use the frontend to build their own tools don't need to link in the entire static analyzer. This change exposes various obvious cleanups that can be made to the layout of files and headers in libChecker. More changes pending. :) This change also exposed a layering violation between AnalysisContext and MemRegion. BlockInvocationContext shouldn't explicitly know about BlockDataRegions. For now I've removed the BlockDataRegion* from BlockInvocationContext (removing context-sensitivity; although this wasn't used yet). We need to have a better way to extend BlockInvocationContext (and any LocationContext) to add context-sensitivty. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94406 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-24Implement [dcl.fct.spec]p6.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94365 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-23Implement elementary access control.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94268 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-22Patch fixes a lookup bug in c++'s anonymous union memberFariborz Jahanian
lookup. Fixes radar 7562438. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94191 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-22Create function, block, and template parameters in the context of theJohn McCall
translation unit. This is temporary for function and block parameters; template parameters can just stay this way, since Templates aren't DeclContexts. This gives us the nice property that everything created in a record DC should have access in C++. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94122 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-21Speed up compilation by avoiding generating exceptional edges fromMike Stump
CallExprs as those edges help cause a n^2 explosion in the number of destructor calls. Other consumers, such as static analysis, that would like to have more a more complete CFG can select the inclusion of those edges as CFG build time. This also fixes up the two compilation users of CFGs to be tolerant of having or not having those edges. All catch code is assumed be to live if we didn't generate the exceptional edges for CallExprs. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94074 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-21Move some recent checking code into SemaChecking instead.Mike Stump
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94067 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-21Avoid instantiating std::sort to save on compiler size.Mike Stump
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94065 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-21When checking for unreachable code, we can trivially avoid checkingMike Stump
for unreachable loops if all the blocks are already marked live by this point. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94064 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-21When checking for unreachable blocks, we can trivially avoid extraMike Stump
work, if we know we already marked all blocks as live. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94063 91177308-0d34-0410-b5e6-96231b3b80d8
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