[MSVC 8.0] static const data members violate the ODR
----------------------------------------------------
Key: STDCXX-613
URL: https://issues.apache.org/jira/browse/STDCXX-613
Project: C++ Standard Library
Issue Type: Bug
Components: External
Environment: MSVC 7.0, 7.1, and 8.0
Reporter: Martin Sebor
Copied from Rogue Wave Bugzilla:
http://bugzilla.cvo.roguewave.com/show_bug.cgi?id=1744
The program below illustrates that a definition of each static const integral
data member of explicit specializations of class templates that are initialized
in the body of the specialization is emitted by MSVC 7.0 in each translation
unit that references the member. This is, of course, incorrect and leads to
linker
errors.
$ cat t.cpp
template <class T>
struct S;
template <>
struct S<int>
{
static const int i = 0;
};
#ifndef MAIN
const int S<int>::i;
#else
int main ()
{
return S<int>::i;
}
#endif
$ cl -c -Fot.obj t.cpp && cl -c -DMAIN -Fomain.obj t.cpp && cl main.obj t.obj
Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 13.00.9344.1 for 80x86
Copyright (C) Microsoft Corporation 1984-2001. All rights reserved.
...
t.obj : error LNK2005: "public: static int const S<int>::i" ([EMAIL
PROTECTED]@H@@2HB) already defined in main.obj
main.exe : fatal error LNK1169: one or more multiply defined symbols found
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