[LLVMbugs] [Bug 9635] New: C++0x bug in clang (possibly)

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Wed Apr 6 03:36:19 PDT 2011


           Summary: C++0x bug in clang (possibly)
           Product: clang
           Version: unspecified
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++0x
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: chris at bubblescope.net
                CC: llvmbugs at cs.uiuc.edu, dgregor at apple.com

I'm not sure if the following is a bug in clang, or a change in the C++
standard for C++0x (although if it is a change, it's not one I've heard of).

The following code fails to compile in clang c++03 and g++. g++ 4.5 continues
to reject the code in c++0x mode, but clang accepts it with -std=c++0x.

Some libraries rely on code like this NOT compiling, to check templates are
only instantiated in certain ways.

template<int N>
struct foo
{ friend int f(int) { return 0; } };

int main(void)
    foo<1> f;
    foo<2> g;

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