[LLVMbugs] [Bug 18278] New: [-cxx-abi microsoft] Layout of field inside of five-deep hierarchy wrong

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=18278

            Bug ID: 18278
           Summary: [-cxx-abi microsoft] Layout of field inside of
                    five-deep hierarchy wrong
           Product: clang
           Version: unspecified
          Hardware: PC
                OS: Linux
            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
extern "C" int printf(const char *fmt, ...);
static char buffer[419430400];
inline void *operator new(size_t, void *pv) { return pv; }
struct ClassName0 {
  ClassName0() {}
};
struct ClassName1 : public ClassName0 {
  long long ClassName1FieldName0;
  virtual void ClassName1Method() {}
  ClassName1() {
    printf(
        "ClassName1FieldName0 : %llu\n",
        (unsigned long long)((size_t) & ClassName1FieldName0 -
(size_t)buffer));
  }
};
struct ClassName2 : public ClassName0, public ClassName1 {
  virtual void ClassName2Method() {}
};
struct ClassName3 : public ClassName2, public ClassName0, public ClassName1 {
  ClassName3() {}
};
struct ClassName4 : public ClassName1, public ClassName3, public ClassName0 {
  ClassName4() {}
};
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(ClassName4); }

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