Range-based-for implementation compiles in g++ but not in clang++ - c++

Question

The following range-based-for snippet compiles fine in g++ 4.6.1, but not with clang++ version 3.1 (trunk 151577) on oneiric amd64.
A very basic range-based for (eg std::vector) seems to work fine, so something is wrong with my implementation for my own enumerations.
I am looking for a sanity-check or a work-around.
If someone has a work-around for range-based-for that clang++ is happy with, that would be fantastic.
template< typename E >
class Enum
{
public:
Enum() : m_e( E::Last ) { }
Enum( E t ) : m_e( t ) { }
E operator()() const
{
return m_e;
}
public:
class Iterator
{
public:
Iterator( int val ) : m_val( val ) { }
E operator*( void ) const
{
return (E) m_val;
}
void operator++( void )
{
++m_val;
}
bool operator!=( Iterator rhs ) const
{
return m_val != rhs.m_val;
}
private:
int m_val;
};
private:
E m_e;
};
enum class eCOLORS
{
kBLUE=0, kGREEN, kRED, kPURPLE,
First=kBLUE, Last=kPURPLE
};
Enum<eCOLORS>::Iterator begin(const Enum<eCOLORS>& b)
{
return Enum<eCOLORS>::Iterator( (int)(eCOLORS::First ));
}
Enum<eCOLORS>::Iterator end(const Enum<eCOLORS>& b)
{
return Enum<eCOLORS>::Iterator( (int)(eCOLORS::Last ));
}
int main()
{
Enum<eCOLORS> e;
// for( const auto x : Enum<eCOLORS>() )
for( auto it=begin(e);
it!=end(e); ++it )
{
}
}
The errors are listed below
clang++ -g -std=c++0x \
sandbox.cpp -o sandbox
clang: /mnt/home/foobar/src/llvm/tools/clang/lib/AST/Decl.cpp:1001: bool clang::NamedDecl::isCXXInstanceMember() const: Assertion `isCXXClassMember() && "checking whether non-member is instance member"' failed.
0 clang 0x0000000001aecc4f
1 clang 0x0000000001aed179
2 libpthread.so.0 0x00002aeeaeda1060
3 libc.so.6 0x00002aeeaf98b3a5 gsignal + 53
4 libc.so.6 0x00002aeeaf98eb0b abort + 379
5 libc.so.6 0x00002aeeaf983d4d __assert_fail + 221
6 clang 0x0000000000ed8f9e clang::NamedDecl::isCXXInstanceMember() const + 174
7 clang 0x0000000000a51095 clang::Sema::CheckQualifiedMemberReference(clang::Expr*, clang::QualType, clang::CXXScopeSpec const&, clang::LookupResult const&) + 213
8 clang 0x0000000000a55520 clang::Sema::BuildMemberReferenceExpr(clang::Expr*, clang::QualType, clang::SourceLocation, bool, clang::CXXScopeSpec const&, clang::SourceLocation, clang::NamedDecl*, clang::LookupResult&, clang::TemplateArgumentListInfo const*, bool) + 672
9 clang 0x0000000000a518d4 clang::Sema::BuildMemberReferenceExpr(clang::Expr*, clang::QualType, clang::SourceLocation, bool, clang::CXXScopeSpec&, clang::SourceLocation, clang::NamedDecl*, clang::DeclarationNameInfo const&, clang::TemplateArgumentListInfo const*) + 772
10 clang 0x0000000000b50378
11 clang 0x0000000000b58a19
12 clang 0x0000000000b56362
13 clang 0x0000000000b4e87b clang::Sema::SubstExpr(clang::Expr*, clang::MultiLevelTemplateArgumentList const&) + 75
14 clang 0x0000000000b64a69 clang::Sema::SubstInitializer(clang::Expr*, clang::MultiLevelTemplateArgumentList const&, bool) + 169
15 clang 0x0000000000b6d57f clang::Sema::InstantiateMemInitializers(clang::CXXConstructorDecl*, clang::CXXConstructorDecl const*, clang::MultiLevelTemplateArgumentList const&) + 1135
16 clang 0x0000000000b6cb13 clang::Sema::InstantiateFunctionDefinition(clang::SourceLocation, clang::FunctionDecl*, bool, bool) + 2307
17 clang 0x0000000000b6dadd clang::Sema::PerformPendingInstantiations(bool) + 461
18 clang 0x00000000008e0bb3 clang::Sema::ActOnEndOfTranslationUnit() + 419
19 clang 0x00000000008757d0 clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&) + 112
20 clang 0x00000000008727c6 clang::ParseAST(clang::Sema&, bool) + 326
21 clang 0x000000000075623e clang::CodeGenAction::ExecuteAction() + 958
22 clang 0x0000000000612f3d clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 957
23 clang 0x00000000005fb55a clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 3098
24 clang 0x00000000005f17ce cc1_main(char const**, char const**, char const*, void*) + 5918
25 clang 0x00000000005f7679 main + 729
26 libc.so.6 0x00002aeeaf97630d __libc_start_main + 237
27 clang 0x00000000005effe9
Stack dump:
0. Program arguments: /usr/local/bin/clang -cc1 -triple x86_64-unknown-linux-gnu -emit-obj -mrelax-all -disable-free -main-file-name sandbox.cpp -mrelocation-model static -mdisable-fp-elim -masm-verbose -mconstructor-aliases -munwind-tables -target-cpu x86-64 -momit-leaf-frame-pointer -g -resource-dir /usr/local/bin/../lib/clang/3.1 -I /home/kfeng/dev/pitbull/cpp/inc/ -I /home/kfeng/src/stlsoft/include/ -I /home/kfeng/src/gtest/include/ -I /home/kfeng/src/gmock/include/ -I /home/kfeng/src/pantheios/include/ -fmodule-cache-path /var/tmp/clang-module-cache -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/4.6/../../../../include/c++/4.6 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/4.6/../../../../include/c++/4.6/x86_64-linux-gnu -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/4.6/../../../../include/c++/4.6/backward -internal-isystem /usr/local/include -internal-isystem /usr/local/bin/../lib/clang/3.1/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -std=c++0x -fdeprecated-macro -fdebug-compilation-dir /home/kfeng/dev/pitbull/cpp/sbx -ferror-limit 19 -fmessage-length 181 -mstackrealign -fgnu-runtime -fobjc-runtime-has-arc -fobjc-runtime-has-weak -fobjc-fragile-abi -fcxx-exceptions -fexceptions -fdiagnostics-show-option -fcolor-diagnostics -o /tmp/sandbox-0nnyL0.o -x c++ sandbox.cpp
1. <eof> parser at end of file
2. sandbox.cpp:5:2: instantiating function definition 'Enum'
clang: error: unable to execute command: Aborted
clang: error: clang frontend command failed due to signal (use -v to see invocation)
clang: note: diagnostic msg: Please submit a bug report to http://llvm.org/bugs/ and include command line arguments and all diagnostic information.
clang: note: diagnostic msg: Preprocessed source(s) and associated run script(s) are located at:
clang: note: diagnostic msg: /tmp/sandbox-Fp11tf.ii
clang: note: diagnostic msg: /tmp/sandbox-Fp11tf.sh

Answer 1

This compiles for me with the stable release of clang. Looks like it's a bug in trunk.
% clang --version
clang version 3.0 (tags/RELEASE_30/final)
Target: x86_64-unknown-linux-gnu
Thread model: posix
% clang++ -o test test.cc -std=c++0x
%