1 files changed, 8 insertions, 4 deletions
diff --git a/absl/base/log_severity.h b/absl/base/log_severity.h
index c24fad79..45f79cca 100644
--- a/absl/base/log_severity.h
+++ b/absl/base/log_severity.h
@@ -4,24 +4,24 @@
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
-//      http://www.apache.org/licenses/LICENSE-2.0
+//      https://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-//
 
 #ifndef ABSL_BASE_INTERNAL_LOG_SEVERITY_H_
 #define ABSL_BASE_INTERNAL_LOG_SEVERITY_H_
 
 #include <array>
+#include <ostream>
 
 #include "absl/base/attributes.h"
 
 namespace absl {
-inline namespace lts_2018_12_18 {
+inline namespace lts_2019_08_08 {
 
 // Four severity levels are defined.  Logging APIs should terminate the program
 // when a message is logged at severity `kFatal`; the other levels have no
@@ -63,7 +63,11 @@ constexpr absl::LogSeverity NormalizeLogSeverity(int s) {
   return NormalizeLogSeverity(static_cast<absl::LogSeverity>(s));
 }
 
-}  // inline namespace lts_2018_12_18
+// The exact representation of a streamed `absl::LogSeverity` is deliberately
+// unspecified; do not rely on it.
+std::ostream& operator<<(std::ostream& os, absl::LogSeverity s);
+
+}  // inline namespace lts_2019_08_08
 }  // namespace absl
 
 #endif  // ABSL_BASE_INTERNAL_LOG_SEVERITY_H_