third_party/protobuf: Update to HEAD (f52e188fe4)

third_party/protobuf/src/google/protobuf/has_bits.h

Index: third_party/protobuf/src/google/protobuf/has_bits.h
diff --git a/third_party/protobuf/src/google/protobuf/arena_test_util.h b/third_party/protobuf/src/google/protobuf/has_bits.h
similarity index 67%
copy from third_party/protobuf/src/google/protobuf/arena_test_util.h
copy to third_party/protobuf/src/google/protobuf/has_bits.h
index 690cc706ee5f2d029752fe6f1b323130046938e5..133bc02a2dd5919757fb310e65bff5bbb02a3f74 100644
--- a/third_party/protobuf/src/google/protobuf/arena_test_util.h
+++ b/third_party/protobuf/src/google/protobuf/has_bits.h
@@ -28,33 +28,45 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-#ifndef GOOGLE_PROTOBUF_ARENA_TEST_UTIL_H__
-#define GOOGLE_PROTOBUF_ARENA_TEST_UTIL_H__
+#ifndef GOOGLE_PROTOBUF_HAS_BITS_H__
+#define GOOGLE_PROTOBUF_HAS_BITS_H__
 
+#include <google/protobuf/stubs/common.h>
 
 namespace google {
 namespace protobuf {
 namespace internal {
 
-class NoHeapChecker {
+template<size_t doublewords>
+class HasBits {
  public:
-  NoHeapChecker() {
-    capture_alloc.Hook();
+  HasBits() GOOGLE_ATTRIBUTE_ALWAYS_INLINE { Clear(); }
+
+  void Clear() GOOGLE_ATTRIBUTE_ALWAYS_INLINE {
+    memset(has_bits_, 0, sizeof(has_bits_));
+  }
+
+  ::google::protobuf::uint32& operator[](int index) GOOGLE_ATTRIBUTE_ALWAYS_INLINE {
+    return has_bits_[index];
+  }
+
+  const ::google::protobuf::uint32& operator[](int index) const GOOGLE_ATTRIBUTE_ALWAYS_INLINE {
+    return has_bits_[index];
+  }
+
+  bool operator==(const HasBits<doublewords>& rhs) const {
+    return memcmp(has_bits_, rhs.has_bits_, sizeof(has_bits_)) == 0;
+  }
+
+  bool operator!=(const HasBits<doublewords>& rhs) const {
+    return !(*this == rhs);
   }
-  ~NoHeapChecker();
  private:
-  class NewDeleteCapture {
-   public:
-    // TOOD(xiaofeng): Implement this for opensource protobuf.
-    void Hook() {}
-    void Unhook() {}
-    int alloc_count() { return 0; }
-    int free_count() { return 0; }
-  } capture_alloc;
+  ::google::protobuf::uint32 has_bits_[doublewords];
 };
 
 }  // namespace internal
 }  // namespace protobuf
 
 }  // namespace google
-#endif  // GOOGLE_PROTOBUF_ARENA_TEST_UTIL_H__
+#endif  // GOOGLE_PROTOBUF_HAS_BITS_H__