14 files changed, 28 insertions, 0 deletions
diff --git a/absl/synchronization/internal/create_thread_identity.cc b/absl/synchronization/internal/create_thread_identity.cc
index e7a65cd8..38cc7e2f 100644
--- a/absl/synchronization/internal/create_thread_identity.cc
+++ b/absl/synchronization/internal/create_thread_identity.cc
@@ -27,6 +27,7 @@
 #include "absl/synchronization/internal/per_thread_sem.h"
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace synchronization_internal {
 
 // ThreadIdentity storage is persistent, we maintain a free-list of previously
@@ -107,6 +108,7 @@ base_internal::ThreadIdentity* CreateThreadIdentity() {
 }
 
 }  // namespace synchronization_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 
 #endif  // ABSL_LOW_LEVEL_ALLOC_MISSING
diff --git a/absl/synchronization/internal/create_thread_identity.h b/absl/synchronization/internal/create_thread_identity.h
index 1bb87dee..05b5f7e1 100644
--- a/absl/synchronization/internal/create_thread_identity.h
+++ b/absl/synchronization/internal/create_thread_identity.h
@@ -29,6 +29,7 @@
 #include "absl/base/port.h"
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace synchronization_internal {
 
 // Allocates and attaches a ThreadIdentity object for the calling thread.
@@ -49,5 +50,6 @@ inline base_internal::ThreadIdentity* GetOrCreateCurrentThreadIdentity() {
 }
 
 }  // namespace synchronization_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 #endif  // ABSL_SYNCHRONIZATION_INTERNAL_CREATE_THREAD_IDENTITY_H_
diff --git a/absl/synchronization/internal/graphcycles.cc b/absl/synchronization/internal/graphcycles.cc
index ab1f3f84..5a015844 100644
--- a/absl/synchronization/internal/graphcycles.cc
+++ b/absl/synchronization/internal/graphcycles.cc
@@ -44,6 +44,7 @@
 // Do not use STL.   This module does not use standard memory allocation.
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace synchronization_internal {
 
 namespace {
@@ -694,6 +695,7 @@ int GraphCycles::GetStackTrace(GraphId id, void*** ptr) {
 }
 
 }  // namespace synchronization_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 
 #endif  // ABSL_LOW_LEVEL_ALLOC_MISSING
diff --git a/absl/synchronization/internal/graphcycles.h b/absl/synchronization/internal/graphcycles.h
index 2e6686a4..e43ae26b 100644
--- a/absl/synchronization/internal/graphcycles.h
+++ b/absl/synchronization/internal/graphcycles.h
@@ -41,6 +41,7 @@
 #include <cstdint>
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace synchronization_internal {
 
 // Opaque identifier for a graph node.
@@ -132,6 +133,7 @@ class GraphCycles {
 };
 
 }  // namespace synchronization_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 
 #endif
diff --git a/absl/synchronization/internal/graphcycles_test.cc b/absl/synchronization/internal/graphcycles_test.cc
index 9a85b390..09332bad 100644
--- a/absl/synchronization/internal/graphcycles_test.cc
+++ b/absl/synchronization/internal/graphcycles_test.cc
@@ -25,6 +25,7 @@
 #include "absl/base/macros.h"
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace synchronization_internal {
 
 // We emulate a GraphCycles object with a node vector and an edge vector.
@@ -459,4 +460,5 @@ TEST_F(GraphCyclesTest, ManyEdges) {
 }
 
 }  // namespace synchronization_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
diff --git a/absl/synchronization/internal/kernel_timeout.h b/absl/synchronization/internal/kernel_timeout.h
index 0d132d98..3d3dc0cb 100644
--- a/absl/synchronization/internal/kernel_timeout.h
+++ b/absl/synchronization/internal/kernel_timeout.h
@@ -37,6 +37,7 @@
 #include "absl/time/time.h"
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace synchronization_internal {
 
 class Futex;
@@ -145,5 +146,6 @@ class KernelTimeout {
 };
 
 }  // namespace synchronization_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 #endif  // ABSL_SYNCHRONIZATION_INTERNAL_KERNEL_TIMEOUT_H_
diff --git a/absl/synchronization/internal/mutex_nonprod.cc b/absl/synchronization/internal/mutex_nonprod.cc
index 45c60326..a8071a96 100644
--- a/absl/synchronization/internal/mutex_nonprod.cc
+++ b/absl/synchronization/internal/mutex_nonprod.cc
@@ -31,6 +31,7 @@
 #include "absl/time/time.h"
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace synchronization_internal {
 
 namespace {
@@ -315,4 +316,5 @@ bool Condition::Eval() const {
 
 void RegisterSymbolizer(bool (*)(const void*, char*, int)) {}
 
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
diff --git a/absl/synchronization/internal/mutex_nonprod.inc b/absl/synchronization/internal/mutex_nonprod.inc
index 0aab3d13..2d06285f 100644
--- a/absl/synchronization/internal/mutex_nonprod.inc
+++ b/absl/synchronization/internal/mutex_nonprod.inc
@@ -36,6 +36,7 @@
 #endif
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 class Condition;
 
 namespace synchronization_internal {
@@ -253,4 +254,5 @@ class SynchronizationStorage {
 };
 
 }  // namespace synchronization_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
diff --git a/absl/synchronization/internal/per_thread_sem.cc b/absl/synchronization/internal/per_thread_sem.cc
index caa2baf6..53b789d6 100644
--- a/absl/synchronization/internal/per_thread_sem.cc
+++ b/absl/synchronization/internal/per_thread_sem.cc
@@ -25,6 +25,7 @@
 #include "absl/synchronization/internal/waiter.h"
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace synchronization_internal {
 
 void PerThreadSem::SetThreadBlockedCounter(std::atomic<int> *counter) {
@@ -58,6 +59,7 @@ void PerThreadSem::Tick(base_internal::ThreadIdentity *identity) {
 }
 
 }  // namespace synchronization_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 
 extern "C" {
diff --git a/absl/synchronization/internal/per_thread_sem.h b/absl/synchronization/internal/per_thread_sem.h
index 678b69e4..fc64f768 100644
--- a/absl/synchronization/internal/per_thread_sem.h
+++ b/absl/synchronization/internal/per_thread_sem.h
@@ -32,6 +32,7 @@
 #include "absl/synchronization/internal/kernel_timeout.h"
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 
 class Mutex;
 
@@ -80,6 +81,7 @@ class PerThreadSem {
 };
 
 }  // namespace synchronization_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 
 // In some build configurations we pass --detect-odr-violations to the
diff --git a/absl/synchronization/internal/per_thread_sem_test.cc b/absl/synchronization/internal/per_thread_sem_test.cc
index 2b52ea76..63c8e56a 100644
--- a/absl/synchronization/internal/per_thread_sem_test.cc
+++ b/absl/synchronization/internal/per_thread_sem_test.cc
@@ -33,6 +33,7 @@
 // primitives which might use PerThreadSem, most notably absl::Mutex.
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace synchronization_internal {
 
 class SimpleSemaphore {
@@ -169,4 +170,5 @@ TEST_F(PerThreadSemTest, Timeouts) {
 }  // namespace
 
 }  // namespace synchronization_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
diff --git a/absl/synchronization/internal/thread_pool.h b/absl/synchronization/internal/thread_pool.h
index 84640427..82dedbf5 100644
--- a/absl/synchronization/internal/thread_pool.h
+++ b/absl/synchronization/internal/thread_pool.h
@@ -25,6 +25,7 @@
 #include "absl/synchronization/mutex.h"
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace synchronization_internal {
 
 // A simple ThreadPool implementation for tests.
@@ -85,6 +86,7 @@ class ThreadPool {
 };
 
 }  // namespace synchronization_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 
 #endif  // ABSL_SYNCHRONIZATION_INTERNAL_THREAD_POOL_H_
diff --git a/absl/synchronization/internal/waiter.cc b/absl/synchronization/internal/waiter.cc
index 768c5208..ad86acce 100644
--- a/absl/synchronization/internal/waiter.cc
+++ b/absl/synchronization/internal/waiter.cc
@@ -46,6 +46,7 @@
 #include "absl/synchronization/internal/kernel_timeout.h"
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace synchronization_internal {
 
 static void MaybeBecomeIdle() {
@@ -409,4 +410,5 @@ void Waiter::Poke() {
 #endif
 
 }  // namespace synchronization_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
diff --git a/absl/synchronization/internal/waiter.h b/absl/synchronization/internal/waiter.h
index 23166f4b..1c284c0a 100644
--- a/absl/synchronization/internal/waiter.h
+++ b/absl/synchronization/internal/waiter.h
@@ -53,6 +53,7 @@
 #endif
 
 namespace absl {
+inline namespace lts_2018_06_20 {
 namespace synchronization_internal {
 
 // Waiter is an OS-specific semaphore.
@@ -134,6 +135,7 @@ class Waiter {
 };
 
 }  // namespace synchronization_internal
+}  // inline namespace lts_2018_06_20
 }  // namespace absl
 
 #endif  // ABSL_SYNCHRONIZATION_INTERNAL_WAITER_H_