Project import generated by Copybara.

GitOrigin-RevId: d89dba27e35462d7457121b978fd79214205e686
Change-Id: I0eae80578a93a580820bc90d42e6b42faf7fde0a
diff --git a/absl/debugging/stacktrace.h b/absl/debugging/stacktrace.h
index 8b831e2..a6213cf 100644
--- a/absl/debugging/stacktrace.h
+++ b/absl/debugging/stacktrace.h
@@ -32,6 +32,7 @@
 #define ABSL_DEBUGGING_STACKTRACE_H_
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 
 // GetStackFrames()
 //
@@ -220,6 +221,7 @@
 // working.
 extern bool StackTraceWorksForTest();
 }  // namespace debugging_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 
 #endif  // ABSL_DEBUGGING_STACKTRACE_H_