[LLVMbugs] [Bug 18152] New: template parameter not treated as constexpr

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=18152

            Bug ID: 18152
           Summary: template parameter not treated as constexpr
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++11
          Assignee: unassignedclangbugs at nondot.org
          Reporter: sami.liedes at iki.fi
                CC: dgregor at apple.com, llvmbugs at cs.uiuc.edu
    Classification: Unclassified

GCC compiles this code with -std=c++11, but clang++ -std=c++11 fails with 

3:26: error: in-class initializer for static data member is not a constant
expression

----------
template<int B>
struct A {
    static const int len{B};
};
----------

I haven't read the standard, but the claim that B is not a constexpr seems
rather surprising to me.

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