http://llvm.org/bugs/show_bug.cgi?id=15739
Bug ID: 15739
Summary: explicit specialization of 'instance' after
instantiation
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: C++
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
Classification: Unclassified
clang version 3.3 (trunk 179456)
$ /home/dimhen/build/csa/Release+Asserts/bin/clang++ -fsyntax-only
specialization.ii
specialization.ii:26:57: error: explicit specialization of 'instance' after
instantiation
0 > ChoiceValueTraitsT < DVCS_DigestInfo, 0 >::instance =
^
specialization.ii:22:39: note: implicit instantiation first required here
A::t_messageImprint >::instance;
^
specialization.ii:27:14: error: cannot refer to class template
'ChoiceValueTraitsT' without a template argument list
ChoiceValueTraitsT ();
^
specialization.ii:12:30: note: template is declared here
template < class, int >class ChoiceValueTraitsT:public B
^
2 errors generated.
$ cat specialization.ii
struct DVCS_DigestInfo;
class A
{
public:
enum Type
{ t_messageImprint };
}
;
class B
{
};
template < class, int >class ChoiceValueTraitsT:public B
{
public:
static const ChoiceValueTraitsT instance;
};
class C
{
const B *findTraits ()
{
return &ChoiceValueTraitsT < DVCS_DigestInfo,
A::t_messageImprint >::instance;
}
};
template <> const ChoiceValueTraitsT < DVCS_DigestInfo,
0 > ChoiceValueTraitsT < DVCS_DigestInfo, 0 >::instance =
ChoiceValueTraitsT ();
g++ (3.4.6, 4.7.2 and 4.9) compiles this code
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