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2009-10-15Diagnose explicit instantiations of function templates and memberDouglas Gregor
functions/static data members of class template specializations that do not have definitions. This is the latter part of [temp.explicit]p4; the former part still needs more testing. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@84182 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-15More explicit template instantiation. Now we're checking for moreDouglas Gregor
cases where an explicit instantiation requires a definition; the remainder of these checks will come with the implementation of paragraph 4 of [temp.explicit]. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@84181 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-14CheckTemplateSpecializationScope isn't going to be used for explicitDouglas Gregor
instantiations, since the requirements are too different from those for template specializations. Simplify it slightly. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@84156 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-14Additional semantic checking for explicit template instantiations,Douglas Gregor
focusing on the scope- and qualifier-related semantic requirements in C++ [temp.explicit]p2. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@84154 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-14Testing and some minor fixes for explicit template instantiation.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@84129 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-14Have the exception specification checkers take partial diagnostics. Use this ↵Sebastian Redl
to merge two diagnostics. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@84105 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-14Use partial diagnostics properly in call to RequireCompleteType. Among other ↵Sebastian Redl
things, this means we get a note on the declaration of the incomplete type when it is used in an exception specification. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@84099 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-14fix some cfstring related issues: Chris Lattner
1) -fwritable-string does affect the non-utf16 version of cfstrings just not the utf16 ones. 2) utf16 strings should always be marked constant, as the __TEXT segment is readonly. 3) The name of the global doesn't matter, remove it from TargetInfo. 4) Trust the asmprinter to drop cstrings into the right section, like llvmgcc does now. This fixes rdar://7115750 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@84077 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-14Handle ambiguity of reference initialization.Fariborz Jahanian
Removes a FIXME. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@84068 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-13Improve diagnostics when the parser encounters a declarator with anDouglas Gregor
unknown type name, e.g., foo::bar x; when "bar" does not refer to a type in "foo". With this change, the parser now calls into the action to perform diagnostics and can try to recover by substituting in an appropriate type. For example, this allows us to easily diagnose some missing "typename" specifiers, which we now do: test/SemaCXX/unknown-type-name.cpp:29:1: error: missing 'typename' prior to dependent type name 'A<T>::type' A<T>::type A<T>::f() { return type(); } ^~~~~~~~~~ typename Fixes PR3990. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@84053 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-13Unify our diagnostic printing for errors of the form, "we didn't likeDouglas Gregor
what we found when we looked into <blah>", where <blah> is a DeclContext*. We can now format DeclContext*'s in nice ways, e.g., "namespace N", "the global namespace", "'class Foo'". This is part of PR3990, but we're not quite there yet. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@84028 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-13Turn -Wparentheses on by default.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83993 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-13Diagnose attempts to add default function arguments to aDouglas Gregor
specialization. This completes C++ [temp.expl.spec]! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83980 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-13Improve the internal representation and semantic analysis of friendDouglas Gregor
function templates. This commit ensures that friend function templates are constructed as FunctionTemplateDecls rather than partial FunctionDecls (as they previously were). It then implements template instantiation for friend function templates, injecting the friend function template only when no previous declaration exists at the time of instantiation. Oh, and make sure that explicit specialization declarations are not friends. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83970 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-13make the diagnostic in the 'unused result' warning more preciseChris Lattner
about the reason, rdar://7186119. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83940 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-12Implement -Wparentheses: warn about using assignments in contexts that requireJohn McCall
conditions. Add a fixit to insert the parentheses. Also fix a very minor possible memory leak in 'for' conditions. Fixes PR 4876 and rdar://problem/7289172 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83907 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-12Diagnose the declaration of explicit specializations after an implicitDouglas Gregor
instantiation has already been required. To do so, keep track of the point of instantiation for anything that can be instantiated. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83890 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
2009-10-11Test exception spec compatibility on return type and parameters.Sebastian Redl
Along the way, use RequireCompleteType when testing exception spec types. Separate all the ugly spec stuff into its own file. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83764 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-10Implement the core checking for compatible exception specifications in ↵Sebastian Redl
assignment and initialization. The exception specification of the assignee must be the same or a subset of the target. In addition, exception specifications on arguments and return types must be equivalent, but this is not implemented yet. This currently produces two diagnostics for every invalid assignment/initialization, due to the diagnostic produced outside PerformImplicitConversion, e.g. in CheckSingleInitializer. I don't know how to suppress this; in any case I think it is the wrong place for a diagnostic, since there are other diagnostics produced inside the function. So I'm leaving it as it is for the moment. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83710 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-10Qualified lookup through using declarations. Diagnose a new type of ambiguity.John McCall
Split the various ambiguous result enumerators into their own enum. Tests for most of C++ [namespace.qual]. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83700 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
2009-10-09Produce 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
2009-10-09Improve 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
2009-10-08Fix up error reporting when object cannot be constructed Fariborz Jahanian
because of missing default constructor of a member. Fixes pr5154. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83583 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-08Implement support for -Wunused-variable, from Oscar Bonilla!Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83577 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-08Improve checking for specializations of member classes of classDouglas Gregor
templates, and keep track of how those member classes were instantiated or specialized. Make sure that we don't try to instantiate an explicitly-specialized member class of a class template, when that explicit specialization was a declaration rather than a definition. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83547 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-08For instantiations of static data members of class templates, keepDouglas Gregor
track of the kind of specialization or instantiation. Also, check the scope of the specialization and ensure that a specialization declaration without an initializer is not a definition. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83533 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-07Refactoring around friend class templates. Better error message for friend ↵John McCall
enums. Don't create a new declaration for friend classes if a declaration already exists. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83505 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-07Type checking for specializations of member functions of classDouglas Gregor
templates. Previously, these weren't handled as specializations at all. The AST for representing these as specializations is still a work in progress. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83498 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-07Diagnose explicit instantiations and specializations that occur in class scopeDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83473 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-07Refactor checking of the scope of explicit template specializationDouglas Gregor
declarations and explicit template instantiations, improving diagnostics and making the code usable for function template specializations (as well as class template specializations and partial specializations). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83436 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-06Add codegen for __builtin_abort. Convert to FileCheck.Mike Stump
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83427 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-06Add more of __builtin_abort, WIP, still missing codegen.Mike Stump
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83410 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-05Encode the Clang branch and Subversion revision into a PCH file, andDouglas Gregor
assume that PCH files from different Clang revisions are not compatible. Addresses <rdar://problem/7266572>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83323 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-05Provide a common set of routines in Version.h that return SubversionDouglas Gregor
branch/revision information. Use that information in the driver, rather than one-off branch/revision computation. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83321 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-30Issue good diagnostics when initializing a refernce type withFariborz Jahanian
a bad initializer. Fixes pr4274. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83169 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-30Add an error for function parameters that have a qualified address space ↵Tanya Lattner
since this is not allowed by the embedded c extension spec. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83165 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-30self-referecing operator '->' member function was causingFariborz Jahanian
infinit recursion. This patch fixes it. [13.3.1.2]-p2 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83124 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-28Add all of the C99 complex builtins prefixed with __builtin_Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83020 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-28Add -Wbuiltin-macro-redefined/-Wno-builtin-macro-redefined.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83017 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-28Provide a custom diagnostic when code tries to use an unknown builtinDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83014 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-28Add __builtin_vsnprintf. Thanks to Anders JohnsenDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@82998 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-26builtin_trap should be noreturn, this fixes PR5062, patch byChris Lattner
Roman Divacky! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@82876 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-26Rework the Parse-Sema interaction for friends to better support friendDouglas Gregor
class templates. We now treat friend class templates much more like normal class templates, except that they still get special name lookup rules. Fixes PR5057 and eliminates a bunch of spurious diagnostics in <iostream>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@82848 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-25Use explicitly-specified template argument lists to help namingDouglas Gregor
explicit template specializations, when available. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@82824 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-25WIP implementation of explicit instantiation of function templates,Douglas Gregor
member functions of class template specializations, and static data members. The mechanics are (mostly) present, but the semantic analysis is very weak. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@82789 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
2009-09-23This patch addresses a few issues related to 8.5.3 [dcl.init.ref]Fariborz Jahanian
It uses a recent API to find inherited conversion functions to do the initializer to reference lvalue conversion (and removes a FIXME). It issues the ambiguity diagnostics when multiple conversions are found. WIP. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@82649 91177308-0d34-0410-b5e6-96231b3b80d8
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