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2010-04-12Implement C++ [temp.local]p4, which specifies how we eliminateDouglas Gregor
name-lookup ambiguities when there are multiple base classes that are all specializations of the same class template. This is part of a general cleanup for ambiguities in template-name lookup. Fixes PR6717. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101065 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-12change Scope::WithinElse to be a normal scope flag, widen theChris Lattner
fields to two 16-bit values instead of using bitfields. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101020 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-12fix a fixme, stop evaluating getCurMethodDecl() repeatedly Chris Lattner
in "LookupInObjCMethod". git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101014 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-11fix PR6811 by not parsing 'super' as a magic expression inChris Lattner
LookupInObjCMethod. Doing so allows all sorts of invalid code to slip through to codegen. This patch does not change the AST representation of super, though that would now be a natural thing to do since it can only be in the receiver position and in the base of a ObjCPropertyRefExpr. There are still several ugly areas handling super in the parser, but this is definitely a step in the right direction. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100959 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-11actually the interface grossness in the previous patch was due toChris Lattner
typo correction. However, now that the code has been factored out of LookupMemberExpr, it can recurse to itself instead of to LookupMemberExpr! Remove grossness. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100958 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-11factor the code that handles "expr.field" when expr is aChris Lattner
pointer to an objc interface out to a method in SemaExprObjC. This is *much* uglier than it should be due to grossness in LookupMemberExpr :( git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100957 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-09Remove fixit for string literal comparison. Telling the user to use ↵Ted Kremenek
'strcmp' is bad, and we don't have enough information to tell them how to use 'strncmp'. Instead, change the diagnostic to indicate they should use 'strncmp'. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100890 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-09Improve diagnostics when we fail to convert from a source type to aDouglas Gregor
destination type for initialization, assignment, parameter-passing, etc. The main issue fixed here is that we used rather confusing wording for diagnostics such as t.c:2:9: warning: initializing 'char const [2]' discards qualifiers, expected 'char *' [-pedantic] char *name = __func__; ^ ~~~~~~~~ We're not initializing a 'char const [2]', we're initializing a 'char *' with an expression of type 'char const [2]'. Similar problems existed for other diagnostics in this area, so I've normalized them all with more precise descriptive text to say what we're initializing/converting/assigning/etc. from and to. The warning for the code above is now: t.c:2:9: warning: initializing 'char *' from an expression of type 'char const [2]' discards qualifiers [-pedantic] char *name = __func__; ^ ~~~~~~~~ Fixes <rdar://problem/7447179>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100832 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-08Make CXXScopeSpec invalid when incomplete, and propagate that into anyJeffrey Yasskin
Declarator that depends on it. This fixes several redundant errors and bad recoveries. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100779 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-07Return early from Sema::MarkDeclarationReferenced when we know thereDouglas Gregor
isn't any extra work to perform. Also, don't check for unused parameters when the warnings will be suppressed anyway. Improves performance of -fsyntax-only on 403.gcc's combine.c by ~2.5%. <rdar://problem/7836787> git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100686 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-06Implement the protected access restriction ([class.protected]), which requiresJohn McCall
that protected members be used on objects of types which derive from the naming class of the lookup. My first N attempts at this were poorly-founded, largely because the standard is very badly worded here. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100562 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-02Diagnose invalid code with -fobjc-nonfragile-abi2 whenFariborz Jahanian
property is being accessed without the dot-syntax notation. (radar 7822344). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100212 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-31Reinstate my CodeModificationHint -> FixItHint renaming patch, withoutDouglas Gregor
the C-only "optimization". git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100022 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-31Revert r100008, which inexplicably breaks the clang-i686-darwin10 builderDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100018 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-31Rename CodeModificationHint to FixItHint, since we've been using theDouglas Gregor
term "fix-it" everywhere and even *I* get tired of long names sometimes. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100008 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-30Remove silly temporary comment.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99964 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-30Introduce a new kind of derived-to-base cast which bypasses the need forJohn McCall
null checks, and make sure we elide null checks when accessing base class members. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99963 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-30Remember the regparm attribute in FunctionType::ExtInfo.Rafael Espindola
Fixes PR3782. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99940 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-30Propagate the "found declaration" (i.e. the using declaration instead ofJohn McCall
the underlying/instantiated decl) through a lot of API, including "intermediate" MemberExprs required for (e.g.) template instantiation. This is necessary because of the access semantics of member accesses to using declarations: only the base class *containing the using decl* need be accessible from the naming class. This allows us to complete an access-controlled selfhost, if there are no recent regressions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99936 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-30the big refactoring bits of PR3782.Rafael Espindola
This introduces FunctionType::ExtInfo to hold the calling convention and the noreturn attribute. The next patch will extend it to include the regparm attribute and fix the bug. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99920 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-29Optimize PartialDiagnostic's memory-allocation behavior by placing aDouglas Gregor
cache of PartialDiagnostic::Storage objects into an allocator within the ASTContext. This eliminates a significant amount of malloc traffic, for a 10% performance improvement in -fsyntax-only wall-clock time with 403.gcc's combine.c. Also, eliminate the RequireNonAbstractType hack I put in earlier, which was but a symptom of this larger problem. Fixes <rdar://problem/7806091>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99849 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-24Allow conversion of qualified Class type to unqualifiedFariborz Jahanian
Class type to match gcc's. Fixes radar 7789113. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99425 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-23Only perform CFG-based warnings on 'static inline' functions thatTed Kremenek
are called (transitively) by regular functions/blocks within a translation untion. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99233 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-22-Wshadow should only warn about parameter declarations when we'reJohn McCall
entering a function or block definition, not on every single declaration. Unfortunately we don't have previous-lookup results around when it's time to make this decision, so we have to redo the lookup. The alternative is to use delayed diagnostics. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99172 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-20Refactor CFG-based warnings in Sema to be run by a worked object called ↵Ted Kremenek
AnalysisBasedWarnings. This object controls when the warnings are executed, allowing the client code in Sema to selectively disable warnings as needed. Centralizing the logic for analysis-based warnings allows us to optimize when and how they are run. Along the way, remove the redundant logic for the 'check fall-through' warning for blocks; now the same logic is used for both blocks and functions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99085 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-19Diagnose conversion of 'Class' to/from objective-c Fariborz Jahanian
object pointer types. Fixes radar 7634850. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98970 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-18Some cleanup, change diagnostic when assigning toFariborz Jahanian
a property which is not lvalue. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98848 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-17objective-c patch to provide type safty when blocks are passing orFariborz Jahanian
returning objc objects. There will be a corresponding objective-c++ patch soon. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98696 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-16Issue error when a byref array is accessed in a blockFariborz Jahanian
literal. Fixes radar 7760213. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98693 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-16Audit all Preprocessor::getSpelling() callers, improving failureDouglas Gregor
recovery for those that need it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98689 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-15Add support for -Wwrite-strings. Patch by Mike M! Fixes PR 4804.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98541 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-13Use SmallString instead of SmallVectorKovarththanan Rajaratnam
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98436 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-11Warn about comparing an unsigned expression with 0 in tautological ways.John McCall
Patch by mikem! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98279 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-10Statement expressions can be used in global- or namespace-scoped blocksDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98135 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-06Allow use of byref (__block attributed) arrays insideFariborz Jahanian
the block. Fixes radar 7671883. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97863 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-03Reinstate r97674 with a fix for the assertion that was firing in <list>Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97686 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-03Revert r97674; it's causing failuresDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97677 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-03Implement disambiguation of base class members via aDouglas Gregor
nested-name-specifier. For example, this allows member access in diamond-shaped hierarchies like: struct Base { void Foo(); int Member; }; struct D1 : public Base {}; struct D2 : public Base {}; struct Derived : public D1, public D2 { } void Test(Derived d) { d.Member = 17; // error: ambiguous cast from Derived to Base d.D1::Member = 17; // error: okay, modify D1's Base's Member } Fixes PR5820 and <rdar://problem/7535045>. Also, eliminate some redundancy between Sema::PerformObjectMemberConversion() and Sema::PerformObjectArgumentInitialization() -- the latter now calls the former. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97674 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
2010-03-01Implement 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
2010-03-01Start detangling the BlockSemaInfo/Sema mess. No functionality change.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97494 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-27Add an overload of Preprocessor::getSpelling which takes a SmallVector andBenjamin Kramer
returns a StringRef. Use it to simplify some repetitive code. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97322 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-26At sabre's request, drop the FP bounds diagnostics down to warnings and fileJohn McCall
them under -Wbad-literal. They're still on by default. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97284 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-25When computing the composite pointer type for relational comparisons,Douglas Gregor
equality comparisons, and conditional operators, produce a composite pointer type with the appropriate additional "const" qualifiers if the pointer types would otherwise be incompatible. This is a small extension (also present in GCC and EDG in a slightly different form) that permits code like: void** i; void const** j; i == j; with the following extwarn: t.cpp:5:5: warning: comparison of distinct pointer types ('void **' and 'void const **') uses non-standard composite pointer type 'void const *const *' [-pedantic] i == j; ~ ^ ~ Fixes PR6346, and I'll be filing a core issue about this with the C++ committee. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97177 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-25Remove some oogly code made dead by the pseudo-destructorDouglas Gregor
instantiation changes. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97095 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-24Keep track of the location of the '~' in a pseudo-destructor expression.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97080 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-24Retain complete source information for the type after the '~' in aDouglas Gregor
CXXPseudoDestructorExpr. Update template instantiation for pseudo-destructor expressions to use this source information and to make use of Sema::BuildPseudoDestructorExpr when the base expression is dependent or refers to a scalar type. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97079 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-24Retain source information for the "type-name ::" in aDouglas Gregor
pseudo-destructor expression such as p->T::~T() git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97060 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-24ActOnPseudoDestructorExpr now performs all semantic analysis forDouglas Gregor
pseudo-destructor expressions, and builds the CXXPseudoDestructorExpr node directly. Currently, this only affects pseudo-destructor expressions when they are parsed, but not after template instantiation. That's coming next... Improve parsing of pseudo-destructor-names. When parsing the nested-name-specifier and we hit the sequence of tokens X :: ~, query the actual module to determine whether X is a type-name (in which case the X :: is part of the pseudo-destructor-name but not the nested-name-specifier) or not (in which case the X :: is part of the nested-name-specifier). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97058 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
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