[LLVMbugs] [Bug 9238] New: overzealous virtual destructor warning due to virtual inheritance

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=9238

           Summary: overzealous virtual destructor warning due to virtual
                    inheritance
           Product: clang
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: nlewycky at google.com
                CC: llvmbugs at cs.uiuc.edu, dgregor at apple.com


This program:

  class B { public: ~B(); };
  class C : virtual B { public: ~C() { } };

is actually fine (I think), but it triggers the clang warning about virtual
destructors:

  $ llvm/Debug+Asserts/bin/clang -Wnon-virtual-dtor v.cc -fsyntax-only
  v.cc:2:31: warning: 'C' has virtual functions but non-virtual destructor
        [-Wnon-virtual-dtor]
  class C : virtual B { public: ~C() { } };
                                ^
  1 warning generated.

I don't think that's correct in this case.

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