[LLVMbugs] [Bug 8884] New: Surprising behavior with 'friend' and 'extern "C"'

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=8884

           Summary: Surprising behavior with 'friend' and 'extern "C"'
           Product: clang
           Version: unspecified
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: rafael.espindola at gmail.com
                CC: llvmbugs at cs.uiuc.edu, dgregor at apple.com


Clang rejects

----------
extern "C" {
  //struct foo;
  struct bar {
    friend struct foo;
  private:
    void zed () const;
    const struct foo& baz () const;
  };
  struct foo {
    bar x;
    void zed () const;
  };
  void foo::zed () const   {
    x.zed ();
  }
}
----------
but any of the following makes it accept it:

*) Uncommenting the forward declaration of foo.
*) Removing the extern "C".
*) Commenting out the declaration of baz.

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