if (VM.VerifyAssertions) VM.assert(x >= 0 && x < (EXCEPTION_OBJ_MASK >>> EXCEPTION_OBJ_SHIFT));
if (VM.VerifyAssertions) VM._assert(x >= 0 && x < (EXCEPTION_OBJ_MASK >>> EXCEPTION_OBJ_SHIFT));
  final void setUnsignedExceptionOffset(int x) {    if (VM.VerifyAssertions) VM.assert(x >= 0 && x < (EXCEPTION_OBJ_MASK >>> EXCEPTION_OBJ_SHIFT));    _bits = (_bits & ~EXCEPTION_OBJ_MASK) | (((long)x) << EXCEPTION_OBJ_SHIFT);  }