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-rw-r--r--absl/base/internal/atomic_hook.h4
-rw-r--r--absl/base/internal/atomic_hook_test_helper.cc2
-rw-r--r--absl/base/internal/atomic_hook_test_helper.h2
-rw-r--r--absl/base/internal/bits.h4
-rw-r--r--absl/base/internal/cycleclock.cc2
-rw-r--r--absl/base/internal/cycleclock.h4
-rw-r--r--absl/base/internal/direct_mmap.h4
-rw-r--r--absl/base/internal/endian.h2
-rw-r--r--absl/base/internal/endian_test.cc2
-rw-r--r--absl/base/internal/exponential_biased.cc2
-rw-r--r--absl/base/internal/exponential_biased.h3
-rw-r--r--absl/base/internal/exponential_biased_test.cc2
-rw-r--r--absl/base/internal/hide_ptr.h4
-rw-r--r--absl/base/internal/identity.h4
-rw-r--r--absl/base/internal/inline_variable_testing.h2
-rw-r--r--absl/base/internal/invoke.h2
-rw-r--r--absl/base/internal/low_level_alloc.cc2
-rw-r--r--absl/base/internal/low_level_alloc.h2
-rw-r--r--absl/base/internal/low_level_alloc_test.cc2
-rw-r--r--absl/base/internal/low_level_scheduling.h2
-rw-r--r--absl/base/internal/periodic_sampler.cc2
-rw-r--r--absl/base/internal/periodic_sampler.h2
-rw-r--r--absl/base/internal/periodic_sampler_benchmark.cc2
-rw-r--r--absl/base/internal/periodic_sampler_test.cc2
-rw-r--r--absl/base/internal/raw_logging.cc2
-rw-r--r--absl/base/internal/raw_logging.h2
-rw-r--r--absl/base/internal/scheduling_mode.h4
-rw-r--r--absl/base/internal/scoped_set_env.cc2
-rw-r--r--absl/base/internal/scoped_set_env.h4
-rw-r--r--absl/base/internal/spinlock.cc2
-rw-r--r--absl/base/internal/spinlock.h2
-rw-r--r--absl/base/internal/spinlock_wait.cc2
-rw-r--r--absl/base/internal/spinlock_wait.h2
-rw-r--r--absl/base/internal/sysinfo.cc2
-rw-r--r--absl/base/internal/sysinfo.h2
-rw-r--r--absl/base/internal/sysinfo_test.cc2
-rw-r--r--absl/base/internal/thread_identity.cc2
-rw-r--r--absl/base/internal/thread_identity.h2
-rw-r--r--absl/base/internal/thread_identity_test.cc2
-rw-r--r--absl/base/internal/throw_delegate.cc2
-rw-r--r--absl/base/internal/throw_delegate.h4
-rw-r--r--absl/base/internal/unaligned_access.h6
-rw-r--r--absl/base/internal/unscaledcycleclock.cc2
-rw-r--r--absl/base/internal/unscaledcycleclock.h2
44 files changed, 111 insertions, 0 deletions
diff --git a/absl/base/internal/atomic_hook.h b/absl/base/internal/atomic_hook.h
index 6df956a6ab66..d885bc059e2f 100644
--- a/absl/base/internal/atomic_hook.h
+++ b/absl/base/internal/atomic_hook.h
@@ -20,6 +20,8 @@
 #include <cstdint>
 #include <utility>
 
+#include "absl/base/config.h"
+
 #ifdef _MSC_FULL_VER
 #define ABSL_HAVE_WORKING_ATOMIC_POINTER 0
 #define ABSL_HAVE_WORKING_CONSTEXPR_STATIC_INIT 0
@@ -29,6 +31,7 @@
 #endif
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 
 template <typename T>
@@ -170,6 +173,7 @@ class AtomicHook<ReturnType (*)(Args...)> {
 #undef ABSL_HAVE_WORKING_CONSTEXPR_STATIC_INIT
 
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_BASE_INTERNAL_ATOMIC_HOOK_H_
diff --git a/absl/base/internal/atomic_hook_test_helper.cc b/absl/base/internal/atomic_hook_test_helper.cc
index fad7a89a6ffa..f95d962b343f 100644
--- a/absl/base/internal/atomic_hook_test_helper.cc
+++ b/absl/base/internal/atomic_hook_test_helper.cc
@@ -18,6 +18,7 @@
 #include "absl/base/internal/atomic_hook.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace atomic_hook_internal {
 
 ABSL_CONST_INIT absl::base_internal::AtomicHook<VoidF> func(DefaultFunc);
@@ -26,4 +27,5 @@ void DefaultFunc() { default_func_calls++; }
 void RegisterFunc(VoidF f) { func.Store(f); }
 
 }  // namespace atomic_hook_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
diff --git a/absl/base/internal/atomic_hook_test_helper.h b/absl/base/internal/atomic_hook_test_helper.h
index 44ff780d6b93..3e72b4977d2f 100644
--- a/absl/base/internal/atomic_hook_test_helper.h
+++ b/absl/base/internal/atomic_hook_test_helper.h
@@ -18,6 +18,7 @@
 #include "absl/base/internal/atomic_hook.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace atomic_hook_internal {
 
 using VoidF = void (*)();
@@ -27,6 +28,7 @@ void DefaultFunc();
 void RegisterFunc(VoidF func);
 
 }  // namespace atomic_hook_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_BASE_ATOMIC_HOOK_TEST_HELPER_H_
diff --git a/absl/base/internal/bits.h b/absl/base/internal/bits.h
index 450b923f4a4c..8b03453c184f 100644
--- a/absl/base/internal/bits.h
+++ b/absl/base/internal/bits.h
@@ -20,6 +20,8 @@
 
 #include <cstdint>
 
+#include "absl/base/config.h"
+
 // Clang on Windows has __builtin_clzll; otherwise we need to use the
 // windows intrinsic functions.
 #if defined(_MSC_VER)
@@ -46,6 +48,7 @@
 
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 
 ABSL_BASE_INTERNAL_FORCEINLINE int CountLeadingZeros64Slow(uint64_t n) {
@@ -209,6 +212,7 @@ ABSL_BASE_INTERNAL_FORCEINLINE int CountTrailingZerosNonZero32(uint32_t n) {
 #undef ABSL_BASE_INTERNAL_FORCEINLINE
 
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_BASE_INTERNAL_BITS_H_
diff --git a/absl/base/internal/cycleclock.cc b/absl/base/internal/cycleclock.cc
index e9844b7177a1..0e65005b8914 100644
--- a/absl/base/internal/cycleclock.cc
+++ b/absl/base/internal/cycleclock.cc
@@ -28,6 +28,7 @@
 #include "absl/base/internal/unscaledcycleclock.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 
 #if ABSL_USE_UNSCALED_CYCLECLOCK
@@ -102,4 +103,5 @@ double CycleClock::Frequency() {
 #endif
 
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
diff --git a/absl/base/internal/cycleclock.h b/absl/base/internal/cycleclock.h
index 794564e12f17..a18b58444560 100644
--- a/absl/base/internal/cycleclock.h
+++ b/absl/base/internal/cycleclock.h
@@ -44,7 +44,10 @@
 
 #include <cstdint>
 
+#include "absl/base/config.h"
+
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 
 // -----------------------------------------------------------------------------
@@ -85,6 +88,7 @@ class CycleClockSource {
 };
 
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_BASE_INTERNAL_CYCLECLOCK_H_
diff --git a/absl/base/internal/direct_mmap.h b/absl/base/internal/direct_mmap.h
index 0401ddfa7e60..5618867ba0c6 100644
--- a/absl/base/internal/direct_mmap.h
+++ b/absl/base/internal/direct_mmap.h
@@ -62,6 +62,7 @@ extern "C" void* __mmap2(void*, size_t, int, int, int, size_t);
 #endif  // __BIONIC__
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 
 // Platform specific logic extracted from
@@ -128,6 +129,7 @@ inline int DirectMunmap(void* start, size_t length) {
 }
 
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #else  // !__linux__
@@ -136,6 +138,7 @@ inline int DirectMunmap(void* start, size_t length) {
 // actual mmap()/munmap() methods.
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 
 inline void* DirectMmap(void* start, size_t length, int prot, int flags, int fd,
@@ -148,6 +151,7 @@ inline int DirectMunmap(void* start, size_t length) {
 }
 
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // __linux__
diff --git a/absl/base/internal/endian.h b/absl/base/internal/endian.h
index 8233cb52433b..9677530e8de3 100644
--- a/absl/base/internal/endian.h
+++ b/absl/base/internal/endian.h
@@ -31,6 +31,7 @@
 #include "absl/base/port.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 
 // Use compiler byte-swapping intrinsics if they are available.  32-bit
 // and 64-bit versions are available in Clang and GCC as of GCC 4.3.0.
@@ -259,6 +260,7 @@ inline void Store64(void *p, uint64_t v) {
 
 }  // namespace big_endian
 
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_BASE_INTERNAL_ENDIAN_H_
diff --git a/absl/base/internal/endian_test.cc b/absl/base/internal/endian_test.cc
index 98a099e43e7a..aa6b8496905c 100644
--- a/absl/base/internal/endian_test.cc
+++ b/absl/base/internal/endian_test.cc
@@ -24,6 +24,7 @@
 #include "absl/base/config.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace {
 
 const uint64_t kInitialNumber{0x0123456789abcdef};
@@ -260,4 +261,5 @@ TEST(EndianessTest, big_endian) {
 }
 
 }  // namespace
+ABSL_NAMESPACE_END
 }  // namespace absl
diff --git a/absl/base/internal/exponential_biased.cc b/absl/base/internal/exponential_biased.cc
index 7786c303cdd1..1b30c061e3bd 100644
--- a/absl/base/internal/exponential_biased.cc
+++ b/absl/base/internal/exponential_biased.cc
@@ -25,6 +25,7 @@
 #include "absl/base/optimization.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 
 // The algorithm generates a random number between 0 and 1 and applies the
@@ -88,4 +89,5 @@ void ExponentialBiased::Initialize() {
 }
 
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
diff --git a/absl/base/internal/exponential_biased.h b/absl/base/internal/exponential_biased.h
index 6701e695ef0e..94f79a3378db 100644
--- a/absl/base/internal/exponential_biased.h
+++ b/absl/base/internal/exponential_biased.h
@@ -17,9 +17,11 @@
 
 #include <stdint.h>
 
+#include "absl/base/config.h"
 #include "absl/base/macros.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 
 // ExponentialBiased provides a small and fast random number generator for a
@@ -122,6 +124,7 @@ inline uint64_t ExponentialBiased::NextRandom(uint64_t rnd) {
 }
 
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_BASE_INTERNAL_EXPONENTIAL_BIASED_H_
diff --git a/absl/base/internal/exponential_biased_test.cc b/absl/base/internal/exponential_biased_test.cc
index af003239f8de..90a482d2a9d5 100644
--- a/absl/base/internal/exponential_biased_test.cc
+++ b/absl/base/internal/exponential_biased_test.cc
@@ -27,6 +27,7 @@
 using ::testing::Ge;
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 
 MATCHER_P2(IsBetween, a, b,
@@ -194,4 +195,5 @@ TEST(ExponentialBiasedTest, InitializationModes) {
 }
 
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
diff --git a/absl/base/internal/hide_ptr.h b/absl/base/internal/hide_ptr.h
index cf8f40802469..1dba80909a9b 100644
--- a/absl/base/internal/hide_ptr.h
+++ b/absl/base/internal/hide_ptr.h
@@ -17,7 +17,10 @@
 
 #include <cstdint>
 
+#include "absl/base/config.h"
+
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 
 // Arbitrary value with high bits set. Xor'ing with it is unlikely
@@ -42,6 +45,7 @@ inline T* UnhidePtr(uintptr_t hidden) {
 }
 
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_BASE_INTERNAL_HIDE_PTR_H_
diff --git a/absl/base/internal/identity.h b/absl/base/internal/identity.h
index 086447c6039b..a3154ed7bc59 100644
--- a/absl/base/internal/identity.h
+++ b/absl/base/internal/identity.h
@@ -16,7 +16,10 @@
 #ifndef ABSL_BASE_INTERNAL_IDENTITY_H_
 #define ABSL_BASE_INTERNAL_IDENTITY_H_
 
+#include "absl/base/config.h"
+
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace internal {
 
 template <typename T>
@@ -28,6 +31,7 @@ template <typename T>
 using identity_t = typename identity<T>::type;
 
 }  // namespace internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_BASE_INTERNAL_IDENTITY_H_
diff --git a/absl/base/internal/inline_variable_testing.h b/absl/base/internal/inline_variable_testing.h
index 15dc481e1010..3856b9f80f20 100644
--- a/absl/base/internal/inline_variable_testing.h
+++ b/absl/base/internal/inline_variable_testing.h
@@ -18,6 +18,7 @@
 #include "absl/base/internal/inline_variable.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace inline_variable_testing_internal {
 
 struct Foo {
@@ -39,6 +40,7 @@ const int& get_int_a();
 const int& get_int_b();
 
 }  // namespace inline_variable_testing_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_BASE_INLINE_VARIABLE_TESTING_H_
diff --git a/absl/base/internal/invoke.h b/absl/base/internal/invoke.h
index 44f13302f434..c4eceebd7cda 100644
--- a/absl/base/internal/invoke.h
+++ b/absl/base/internal/invoke.h
@@ -45,6 +45,7 @@
 // top of this file for the API documentation.
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 
 // The five classes below each implement one of the clauses from the definition
@@ -180,6 +181,7 @@ InvokeT<F, Args...> Invoke(F&& f, Args&&... args) {
                                            std::forward<Args>(args)...);
 }
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_BASE_INTERNAL_INVOKE_H_
diff --git a/absl/base/internal/low_level_alloc.cc b/absl/base/internal/low_level_alloc.cc
index a0638f9ea496..225abc247199 100644
--- a/absl/base/internal/low_level_alloc.cc
+++ b/absl/base/internal/low_level_alloc.cc
@@ -63,6 +63,7 @@
 #endif  // __APPLE__
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 
 // A first-fit allocator with amortized logarithmic free() time.
@@ -612,6 +613,7 @@ void *LowLevelAlloc::AllocWithArena(size_t request, Arena *arena) {
 }
 
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_LOW_LEVEL_ALLOC_MISSING
diff --git a/absl/base/internal/low_level_alloc.h b/absl/base/internal/low_level_alloc.h
index c98cdb30235e..db91951c825f 100644
--- a/absl/base/internal/low_level_alloc.h
+++ b/absl/base/internal/low_level_alloc.h
@@ -55,6 +55,7 @@
 #include "absl/base/port.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 
 class LowLevelAlloc {
@@ -119,6 +120,7 @@ class LowLevelAlloc {
 };
 
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_BASE_INTERNAL_LOW_LEVEL_ALLOC_H_
diff --git a/absl/base/internal/low_level_alloc_test.cc b/absl/base/internal/low_level_alloc_test.cc
index 34a080cb15a6..7abbbf9c594e 100644
--- a/absl/base/internal/low_level_alloc_test.cc
+++ b/absl/base/internal/low_level_alloc_test.cc
@@ -22,6 +22,7 @@
 #include <utility>
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 namespace {
 
@@ -149,6 +150,7 @@ static struct BeforeMain {
 
 }  // namespace
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 int main(int argc, char *argv[]) {
diff --git a/absl/base/internal/low_level_scheduling.h b/absl/base/internal/low_level_scheduling.h
index 0fcc8d3bed97..961cc981b864 100644
--- a/absl/base/internal/low_level_scheduling.h
+++ b/absl/base/internal/low_level_scheduling.h
@@ -28,6 +28,7 @@ extern "C" bool __google_disable_rescheduling(void);
 extern "C" void __google_enable_rescheduling(bool disable_result);
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 
 class SchedulingHelper;  // To allow use of SchedulingGuard.
@@ -100,6 +101,7 @@ inline void SchedulingGuard::EnableRescheduling(bool /* disable_result */) {
 }
 
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_BASE_INTERNAL_LOW_LEVEL_SCHEDULING_H_
diff --git a/absl/base/internal/periodic_sampler.cc b/absl/base/internal/periodic_sampler.cc
index 87c3c85ae3e2..520dabbaa006 100644
--- a/absl/base/internal/periodic_sampler.cc
+++ b/absl/base/internal/periodic_sampler.cc
@@ -19,6 +19,7 @@
 #include "absl/base/internal/exponential_biased.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 
 int64_t PeriodicSamplerBase::GetExponentialBiased(int period) noexcept {
@@ -48,4 +49,5 @@ bool PeriodicSamplerBase::SubtleConfirmSample() noexcept {
 }
 
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
diff --git a/absl/base/internal/periodic_sampler.h b/absl/base/internal/periodic_sampler.h
index 238797424fc0..f8a86796b117 100644
--- a/absl/base/internal/periodic_sampler.h
+++ b/absl/base/internal/periodic_sampler.h
@@ -23,6 +23,7 @@
 #include "absl/base/optimization.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 
 // PeriodicSamplerBase provides the basic period sampler implementation.
@@ -204,6 +205,7 @@ template <typename Tag, int default_period>
 std::atomic<int> PeriodicSampler<Tag, default_period>::period_(default_period);
 
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_BASE_INTERNAL_PERIODIC_SAMPLER_H_
diff --git a/absl/base/internal/periodic_sampler_benchmark.cc b/absl/base/internal/periodic_sampler_benchmark.cc
index 037596321776..5ad469ce79c2 100644
--- a/absl/base/internal/periodic_sampler_benchmark.cc
+++ b/absl/base/internal/periodic_sampler_benchmark.cc
@@ -16,6 +16,7 @@
 #include "absl/base/internal/periodic_sampler.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 namespace {
 
@@ -74,4 +75,5 @@ BENCHMARK(BM_PeriodicSampler_Disabled);
 
 }  // namespace
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
diff --git a/absl/base/internal/periodic_sampler_test.cc b/absl/base/internal/periodic_sampler_test.cc
index 29f4d24d6323..3b301e37ab98 100644
--- a/absl/base/internal/periodic_sampler_test.cc
+++ b/absl/base/internal/periodic_sampler_test.cc
@@ -22,6 +22,7 @@
 #include "absl/base/macros.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 namespace {
 
@@ -172,4 +173,5 @@ TEST(PeriodicSamplerTest, SetGlobalPeriod) {
 
 }  // namespace
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
diff --git a/absl/base/internal/raw_logging.cc b/absl/base/internal/raw_logging.cc
index d20bf34ef538..d79c5486658e 100644
--- a/absl/base/internal/raw_logging.cc
+++ b/absl/base/internal/raw_logging.cc
@@ -182,6 +182,7 @@ void RawLogVA(absl::LogSeverity severity, const char* file, int line,
 }  // namespace
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace raw_logging_internal {
 void SafeWriteToStderr(const char *s, size_t len) {
 #if defined(ABSL_HAVE_SYSCALL_WRITE)
@@ -232,4 +233,5 @@ void RegisterInternalLogFunction(InternalLogFunction func) {
 }
 
 }  // namespace raw_logging_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
diff --git a/absl/base/internal/raw_logging.h b/absl/base/internal/raw_logging.h
index 49c8dfbf1b01..12145c48f569 100644
--- a/absl/base/internal/raw_logging.h
+++ b/absl/base/internal/raw_logging.h
@@ -93,6 +93,7 @@
   ::absl::NormalizeLogSeverity(severity)
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace raw_logging_internal {
 
 // Helper function to implement ABSL_RAW_LOG
@@ -172,6 +173,7 @@ extern base_internal::AtomicHook<InternalLogFunction> internal_log_function;
 void RegisterInternalLogFunction(InternalLogFunction func);
 
 }  // namespace raw_logging_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_BASE_INTERNAL_RAW_LOGGING_H_
diff --git a/absl/base/internal/scheduling_mode.h b/absl/base/internal/scheduling_mode.h
index d5b4b7fd54ff..8be5ab6dd3c0 100644
--- a/absl/base/internal/scheduling_mode.h
+++ b/absl/base/internal/scheduling_mode.h
@@ -18,7 +18,10 @@
 #ifndef ABSL_BASE_INTERNAL_SCHEDULING_MODE_H_
 #define ABSL_BASE_INTERNAL_SCHEDULING_MODE_H_
 
+#include "absl/base/config.h"
+
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 
 // Used to describe how a thread may be scheduled.  Typically associated with
@@ -49,6 +52,7 @@ enum SchedulingMode {
 };
 
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_BASE_INTERNAL_SCHEDULING_MODE_H_
diff --git a/absl/base/internal/scoped_set_env.cc b/absl/base/internal/scoped_set_env.cc
index 3ac3f68ddf90..8a934cb51191 100644
--- a/absl/base/internal/scoped_set_env.cc
+++ b/absl/base/internal/scoped_set_env.cc
@@ -23,6 +23,7 @@
 #include "absl/base/internal/raw_logging.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 
 namespace {
@@ -76,4 +77,5 @@ ScopedSetEnv::~ScopedSetEnv() {
 }
 
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
diff --git a/absl/base/internal/scoped_set_env.h b/absl/base/internal/scoped_set_env.h
index 855b22fd41fe..19ec7b5d8a04 100644
--- a/absl/base/internal/scoped_set_env.h
+++ b/absl/base/internal/scoped_set_env.h
@@ -19,7 +19,10 @@
 
 #include <string>
 
+#include "absl/base/config.h"
+
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 
 class ScopedSetEnv {
@@ -36,6 +39,7 @@ class ScopedSetEnv {
 };
 
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_BASE_INTERNAL_SCOPED_SET_ENV_H_
diff --git a/absl/base/internal/spinlock.cc b/absl/base/internal/spinlock.cc
index 7354438fbacb..8dd8dab9e20c 100644
--- a/absl/base/internal/spinlock.cc
+++ b/absl/base/internal/spinlock.cc
@@ -54,6 +54,7 @@
 //          holder to acquire the lock.  There may be outstanding waiter(s).
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 
 ABSL_CONST_INIT static base_internal::AtomicHook<void (*)(const void *lock,
@@ -228,4 +229,5 @@ uint64_t SpinLock::DecodeWaitCycles(uint32_t lock_value) {
 }
 
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
diff --git a/absl/base/internal/spinlock.h b/absl/base/internal/spinlock.h
index 1d1bd6cfcf5a..24e2e9a6f820 100644
--- a/absl/base/internal/spinlock.h
+++ b/absl/base/internal/spinlock.h
@@ -46,6 +46,7 @@
 #include "absl/base/thread_annotations.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 
 class ABSL_LOCKABLE SpinLock {
@@ -236,6 +237,7 @@ inline uint32_t SpinLock::TryLockInternal(uint32_t lock_value,
 }
 
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_BASE_INTERNAL_SPINLOCK_H_
diff --git a/absl/base/internal/spinlock_wait.cc b/absl/base/internal/spinlock_wait.cc
index fac8a21db4c5..fa824be1c008 100644
--- a/absl/base/internal/spinlock_wait.cc
+++ b/absl/base/internal/spinlock_wait.cc
@@ -32,6 +32,7 @@
 #endif
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 
 // See spinlock_wait.h for spec.
@@ -76,4 +77,5 @@ int SpinLockSuggestedDelayNS(int loop) {
 }
 
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
diff --git a/absl/base/internal/spinlock_wait.h b/absl/base/internal/spinlock_wait.h
index 6642ce1ab310..169bc749fbc5 100644
--- a/absl/base/internal/spinlock_wait.h
+++ b/absl/base/internal/spinlock_wait.h
@@ -24,6 +24,7 @@
 #include "absl/base/internal/scheduling_mode.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 
 // SpinLockWait() waits until it can perform one of several transitions from
@@ -62,6 +63,7 @@ void SpinLockDelay(std::atomic<uint32_t> *w, uint32_t value, int loop,
 int SpinLockSuggestedDelayNS(int loop);
 
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 // In some build configurations we pass --detect-odr-violations to the
diff --git a/absl/base/internal/sysinfo.cc b/absl/base/internal/sysinfo.cc
index 68d4266b70cc..7945322f582e 100644
--- a/absl/base/internal/sysinfo.cc
+++ b/absl/base/internal/sysinfo.cc
@@ -55,6 +55,7 @@
 #include "absl/base/internal/unscaledcycleclock.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 
 static once_flag init_system_info_once;
@@ -409,4 +410,5 @@ pid_t GetTID() {
 #endif
 
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
diff --git a/absl/base/internal/sysinfo.h b/absl/base/internal/sysinfo.h
index 93356d80d1c9..7246d5dd95c3 100644
--- a/absl/base/internal/sysinfo.h
+++ b/absl/base/internal/sysinfo.h
@@ -33,6 +33,7 @@
 #include "absl/base/port.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 
 // Nominal core processor cycles per second of each processor.   This is _not_
@@ -59,6 +60,7 @@ using pid_t = uint32_t;
 pid_t GetTID();
 
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_BASE_INTERNAL_SYSINFO_H_
diff --git a/absl/base/internal/sysinfo_test.cc b/absl/base/internal/sysinfo_test.cc
index 82bbcc2b3bd3..cdec9b6a4ece 100644
--- a/absl/base/internal/sysinfo_test.cc
+++ b/absl/base/internal/sysinfo_test.cc
@@ -28,6 +28,7 @@
 #include "absl/synchronization/mutex.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 namespace {
 
@@ -95,4 +96,5 @@ TEST(SysinfoTest, LinuxGetTID) {
 
 }  // namespace
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
diff --git a/absl/base/internal/thread_identity.cc b/absl/base/internal/thread_identity.cc
index 0ea159c58628..6a28f246dbdb 100644
--- a/absl/base/internal/thread_identity.cc
+++ b/absl/base/internal/thread_identity.cc
@@ -28,6 +28,7 @@
 #include "absl/base/internal/spinlock.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 
 #if ABSL_THREAD_IDENTITY_MODE != ABSL_THREAD_IDENTITY_MODE_USE_CPP11
@@ -135,4 +136,5 @@ ThreadIdentity* CurrentThreadIdentityIfPresent() {
 #endif
 
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
diff --git a/absl/base/internal/thread_identity.h b/absl/base/internal/thread_identity.h
index 7cbce9cc8e02..a1aa45ff2e42 100644
--- a/absl/base/internal/thread_identity.h
+++ b/absl/base/internal/thread_identity.h
@@ -33,6 +33,7 @@
 #include "absl/base/internal/per_thread_tls.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 
 struct SynchLocksHeld;
 struct SynchWaitParams;
@@ -243,6 +244,7 @@ inline ThreadIdentity* CurrentThreadIdentityIfPresent() {
 #endif
 
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_BASE_INTERNAL_THREAD_IDENTITY_H_
diff --git a/absl/base/internal/thread_identity_test.cc b/absl/base/internal/thread_identity_test.cc
index 13bfbe3bdbc1..3685779ce8f5 100644
--- a/absl/base/internal/thread_identity_test.cc
+++ b/absl/base/internal/thread_identity_test.cc
@@ -25,6 +25,7 @@
 #include "absl/synchronization/mutex.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 namespace {
 
@@ -123,4 +124,5 @@ TEST(ThreadIdentityTest, ReusedThreadIdentityMutexTest) {
 
 }  // namespace
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
diff --git a/absl/base/internal/throw_delegate.cc b/absl/base/internal/throw_delegate.cc
index 8e928b8a257e..c055f75d9d28 100644
--- a/absl/base/internal/throw_delegate.cc
+++ b/absl/base/internal/throw_delegate.cc
@@ -22,6 +22,7 @@
 #include "absl/base/internal/raw_logging.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 
 namespace {
@@ -103,4 +104,5 @@ void ThrowStdBadFunctionCall() { Throw(std::bad_function_call()); }
 void ThrowStdBadAlloc() { Throw(std::bad_alloc()); }
 
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
diff --git a/absl/base/internal/throw_delegate.h b/absl/base/internal/throw_delegate.h
index 03c700b5ee08..075f5272543a 100644
--- a/absl/base/internal/throw_delegate.h
+++ b/absl/base/internal/throw_delegate.h
@@ -19,7 +19,10 @@
 
 #include <string>
 
+#include "absl/base/config.h"
+
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 
 // Helper functions that allow throwing exceptions consistently from anywhere.
@@ -66,6 +69,7 @@ namespace base_internal {
 // [[noreturn]] void ThrowStdBadArrayNewLength();
 
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_BASE_INTERNAL_THROW_DELEGATE_H_
diff --git a/absl/base/internal/unaligned_access.h b/absl/base/internal/unaligned_access.h
index 2cf7c1d45b3f..6be56c865b3d 100644
--- a/absl/base/internal/unaligned_access.h
+++ b/absl/base/internal/unaligned_access.h
@@ -18,9 +18,11 @@
 #define ABSL_BASE_INTERNAL_UNALIGNED_ACCESS_H_
 
 #include <string.h>
+
 #include <cstdint>
 
 #include "absl/base/attributes.h"
+#include "absl/base/config.h"
 
 // unaligned APIs
 
@@ -56,6 +58,7 @@ void __sanitizer_unaligned_store64(void *p, uint64_t v);
 }  // extern "C"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 
 inline uint16_t UnalignedLoad16(const void *p) {
@@ -83,6 +86,7 @@ inline void UnalignedStore64(void *p, uint64_t v) {
 }
 
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #define ABSL_INTERNAL_UNALIGNED_LOAD16(_p) \
@@ -102,6 +106,7 @@ inline void UnalignedStore64(void *p, uint64_t v) {
 #else
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 
 inline uint16_t UnalignedLoad16(const void *p) {
@@ -129,6 +134,7 @@ inline void UnalignedStore32(void *p, uint32_t v) { memcpy(p, &v, sizeof v); }
 inline void UnalignedStore64(void *p, uint64_t v) { memcpy(p, &v, sizeof v); }
 
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #define ABSL_INTERNAL_UNALIGNED_LOAD16(_p) \
diff --git a/absl/base/internal/unscaledcycleclock.cc b/absl/base/internal/unscaledcycleclock.cc
index 593762bc8b8a..a32936aeab4e 100644
--- a/absl/base/internal/unscaledcycleclock.cc
+++ b/absl/base/internal/unscaledcycleclock.cc
@@ -27,6 +27,7 @@
 #include "absl/base/internal/sysinfo.h"
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace base_internal {
 
 #if defined(__i386__)
@@ -96,6 +97,7 @@ double UnscaledCycleClock::Frequency() {
 #endif
 
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_USE_UNSCALED_CYCLECLOCK
diff --git a/absl/base/internal/unscaledcycleclock.h b/absl/base/internal/unscaledcycleclock.h
index 2d361e962841..cdce9bf8a83c 100644
--- a/absl/base/internal/unscaledcycleclock.h
+++ b/absl/base/internal/unscaledcycleclock.h
@@ -86,6 +86,7 @@
 #endif
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 namespace time_internal {
 class UnscaledCycleClockWrapperForGetCurrentTime;
 }  // namespace time_internal
@@ -115,6 +116,7 @@ class UnscaledCycleClock {
 };
 
 }  // namespace base_internal
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_USE_UNSCALED_CYCLECLOCK