[LLVMbugs] [Bug 18172] New: [-cxx-abi microsoft] clang crashes generating layout involving packed struct and vftable

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=18172

            Bug ID: 18172
           Summary: [-cxx-abi microsoft] clang crashes generating layout
                    involving packed struct and vftable
           Product: clang
           Version: unspecified
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: LLVM Codegen
          Assignee: unassignedclangbugs at nondot.org
          Reporter: david.majnemer at gmail.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

#if defined(__clang__) || defined(__GNUC__)
typedef __SIZE_TYPE__ size_t;
#endif
static char buffer[419430400];
inline void *operator new(size_t, void *pv) {}
struct ClassName0 {
  ClassName0() {}
};
struct ClassName1 : public virtual ClassName0 {
  ClassName1() {}
};
#pragma pack(push, 1)
struct ClassName2 : public ClassName1, public ClassName0 {
  virtual void ClassName2Method() {}
  ClassName2() {}
};
#pragma pack(pop)
static void test_layout(const char *class_name, size_t size_of_class,
                        size_t align_of_class) {}
template <typename Class> static void init_mem() { new (buffer) Class; }
#define test(Class)                                                           
\
  init_mem<Class>(), test_layout(#Class, sizeof(Class), __alignof(Class))
int main() { test(ClassName2); }

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