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path: root/lib/Sema/SemaOverload.cpp
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2009-10-13Diagnose invalid return types for unary operators.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@84030 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-12Handle built-in unary operators when reporting ambiguities.Fariborz Jahanian
wip - To prune excessive reporting. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83889 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-12If built-in operators could not be selected because of ambiguity inFariborz Jahanian
user-defined type conversions, issue list of ambiguites in addition to the diagnostic. So, clang now issues the following: b.cpp:19:19: error: left hand operand to ->* must be a pointer to class compatible with the right hand operand, but is 'struct C1' int i = c1->*pmf; ~~^ b.cpp:19:19: note: because of ambiguity in conversion of 'struct C1' to 'struct E *' b.cpp:5:5: note: candidate function operator E*(); ^ b.cpp:11:5: note: candidate function operator E*(); ^ git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83862 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-10Check that the return type is complete when calling a member function.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83694 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-09Add CheckCallReturnType and start using it for regular call expressions. ↵Anders Carlsson
This will improve error messages. For struct B; B f(); void g() { f(); } We now get t.cpp:6:3: error: calling 'f' with incomplete return type 'struct B' f(); ^~~ t.cpp:3:3: note: 'f' declared here B f(); ^ t.cpp:1:8: note: forward declaration of 'struct B' struct B; ^ git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83692 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-09Add some FIXMEsDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83685 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-09Refactor the LookupResult API to simplify most common operations. Require ↵John McCall
users to pass a LookupResult reference to lookup routines. Call out uses which assume a single result. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83674 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-09Produce good looking diagnostics on ambiguous built-in operators.Fariborz Jahanian
Now we produce things like: bug1.cpp:21:11: error: use of overloaded operator '->*' is ambiguous int i = c->*pmf; // expected-error {{use of overloaded operator '->*' is ambiguous}} \ ~^ ~~~ bug1.cpp:21:11: note: built-in candidate operator ->* ('struct A volatile *', 'int const struct A::*') bug1.cpp:21:11: note: built-in candidate operator ->* ('struct A volatile *', 'int restrict struct A::*') ... Still need to look at an issue (indicated as FIXME in the test case). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83650 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-09Use the new API for applying the qualifiers on built-in '->*' Fariborz Jahanian
operator's types. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83648 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-09Improve on reporting ambiguity involving built-in candidates.Fariborz Jahanian
I still don't like it but it is improvement over what we had. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83603 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-07Handle MemberExprs in ResolveAddressOfOverloadedFunction.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83495 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-07When building candidate set for built-ins; when looking forFariborz Jahanian
convesion functions, look in base classes to. (Removes a FIXME). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83472 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-07Removed couple of unnecessary canonicalizationFariborz Jahanian
per Doug's obsevation. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83464 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-06Patch to implement C++ [over.built]p11 of overload resolution.Fariborz Jahanian
Doug, please review. There is a FIXME in the test case with a question which is unrelated to this patch (that is, error is issued before set of builtins are added to the candidate list). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83429 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-06Refactor the code that walks a C++ inheritance hierarchy, searchingDouglas Gregor
for bases, members, overridden virtual methods, etc. The operations isDerivedFrom and lookupInBases are now provided by CXXRecordDecl, rather than by Sema, so that CodeGen and other clients can use them directly. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83396 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-06Refixed pr5086 by letting Expr::isNullPointerConstantFariborz Jahanian
handle checking for a null pointer for a zero-valued enumerator; moving the test case from CodeGen to Sema. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83350 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-01enumerator value of 0 is not a null pointer constant forFariborz Jahanian
deciding const of null pointer conversion. Fixes PR5086. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83217 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-01Patch to implement static casting which requires one Fariborz Jahanian
user-defined type conversion. Fixes PR5040. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83211 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-30When overload resolution fails for an overloaded operator, show theDouglas Gregor
overload candidates (but not the built-in ones). We still rely on the underlying built-in semantic analysis to produce the initial diagnostic, then print the candidates following that diagnostic. One side advantage of this approach is that we can perform more validation of C++'s operator overloading with built-in candidates vs. the semantic analysis for those built-in operators: when there are no viable candidates, we know to expect an error from the built-in operator handling code. Otherwise, we are not modeling the built-in semantics properly within operator overloading. This is checked as: assert(Result.isInvalid() && "C++ binary operator overloading is missing candidates!"); if (Result.isInvalid()) PrintOverloadCandidates(CandidateSet, /*OnlyViable=*/false); The assert() catches cases where we're wrong in a +Asserts build. The "if" makes sure that, if this happens in a production clang (-Asserts), we still build the proper built-in operator and continue on our merry way. This is effectively what happened before this change, but we've added the assert() to catch more flies. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83175 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-30Note location of operators caused the circularity.Fariborz Jahanian
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83153 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-29Fixes a nasty bug which only turned up in 32bit build of clang andFariborz Jahanian
had to do with an initialized field when multiple type conversions are ambiguous but must be treated as user defined conversion for overload resolution purposes. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83079 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-28Define and use a helper method to call a type conversionFariborz Jahanian
function. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83027 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-28Minor API change. No change in functionality.Fariborz Jahanian
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83022 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-28Multiple conversions to the same type are ambiguous but for theFariborz Jahanian
purpose of overload resolution is to be treated as a uner-defined conversion. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83004 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-28Patch for AST representation for the implicit conversion to a function Fariborz Jahanian
reference/pointer. And a test case for code gen. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83000 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-28Don't allow the same function to enter the overload candidate setDouglas Gregor
multiple times. This requires to be more careful about re-adding candidates cached from the function template definition. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@82967 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-26Yet another simplifying use of Sema::getMostSpecializedDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@82844 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-25Fix checking for a null pointer constant when the expression itself isDouglas Gregor
value-dependent. Audit (and fixed) all calls to Expr::isNullPointerConstant() to provide the correct behavior with value-dependent expressions. Fixes PR5041 and a crash in libstdc++ <locale>. In the same vein, properly compute value- and type-dependence for ChooseExpr. Fixes PR4996. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@82748 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-24WIP implementation of explicit function template specialization. ThisDouglas Gregor
first implementation recognizes when a function declaration is an explicit function template specialization (based on the presence of a template<> header), performs template argument deduction + ambiguity resolution to determine which template is being specialized, and hooks There are many caveats here: - We completely and totally drop any explicitly-specified template arguments on the floor - We don't diagnose any of the extra semantic things that we should diagnose. - I haven't looked to see that we're getting the right linkage for explicit specializations On a happy note, this silences a bunch of errors that show up in libstdc++'s <iostream>, although Clang still can't get through the entire header. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@82728 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-24Refactor the representation of qualifiers to bring ExtQualType out of theJohn McCall
Type hierarchy. Demote 'volatile' to extended-qualifier status. Audit our use of qualifiers and fix a few places that weren't dealing with qualifiers quite right; many more remain. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@82705 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-23Improve diagnostic location information when checking the initialization of ↵Douglas Gregor
a reference git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@82666 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-23When code-completion after a "," is building an overload set, noteDouglas Gregor
that there is one more argument (the one following the comma) and make the candidate non-viable if the function cannot accept any argument in that position. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@82625 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-23Produce detailed diagnostics when overloadFariborz Jahanian
resolution failed to select a candidate due to ambiguity in type conversion function selection. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@82596 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-22Code refactoring and cleanup.Fariborz Jahanian
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@82566 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-22Issue good ambiguity diagnostic when convesion fails.Fariborz Jahanian
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@82565 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-22Implement code completion within a function call, triggered after theDouglas Gregor
opening parentheses and after each comma. We gather the set of visible overloaded functions, perform "partial" overloading based on the set of arguments that we have thus far, and return the still-viable results sorted by the likelihood that they will be the best candidate. Most of the changes in this patch are a refactoring of the overloading routines for a function call, since we needed to separate out the notion of building an overload set (common to code-completion and normal semantic analysis) and then what to do with that overload set. As part of this change, I've pushed explicit template arguments into a few more subroutines. There is still much more work to do in this area. Function templates won't be handled well (unless we happen to deduce all of the template arguments before we hit the completion point), nor will overloaded function-call operators or calls to member functions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@82549 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-21Change all the Type::getAsFoo() methods to specializations of Type::getAs().John McCall
Several of the existing methods were identical to their respective specializations, and so have been removed entirely. Several more 'leaf' optimizations were introduced. The getAsFoo() methods which imposed extra conditions, like getAsObjCInterfacePointerType(), have been left in place. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@82501 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-15When printing an overload candidate that is a function template specialization,Douglas Gregor
point at the template and print out its template arguments, e.g., ambiguous-ovl-print.cpp:5:8: note: candidate function template specialization [with T = int] void f(T*, long); git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@81907 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-15Issue good diagnostics when initialization failes due toFariborz Jahanian
ambiguity in type conversion function selection. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@81898 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-15Issue a good diagnostics when attempt to selectFariborz Jahanian
a type convesion function results in ambiguity. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@81812 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-14Implement partial ordering of function templates when calling aDouglas Gregor
conversion function. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@81807 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-14Test function template partial ordering when resolving the address ofDouglas Gregor
an overloaded function (template). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@81804 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-14Used visible conversion function api to do overloadFariborz Jahanian
resolution of type conversion functions in base and current class. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@81784 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-14Implement partial ordering of function template specializations Douglas Gregor
(C++ [temp.func.order]). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@81777 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-12Use the correct CastKind for derived-to-base pointer conversions.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@81608 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-11Undid my yesterday patch which is not needed with an upcoming patch.Fariborz Jahanian
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@81549 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-10Look for overloaded arrow operators in base classes.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@81475 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-10Patch to collect conversion methods in base(s) and derivedFariborz Jahanian
class into a candidate set. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@81467 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-09Remove tabs, and whitespace cleanups.Mike Stump
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@81346 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-01Preliminary AST representation and semantic analysis forDouglas Gregor
explicitly-specified template argument lists in member reference expressions, e.g., x->f<int>() git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@80646 91177308-0d34-0410-b5e6-96231b3b80d8
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