diff --git a/tests/dlfcn_test.cpp b/tests/dlfcn_test.cpp
index b31d7e4..3b3c0f6 100644
--- a/tests/dlfcn_test.cpp
+++ b/tests/dlfcn_test.cpp
@@ -27,9 +27,9 @@
 #define ASSERT_SUBSTR(needle, haystack) \
     ASSERT_PRED_FORMAT2(::testing::IsSubstring, needle, haystack)
 
-static bool gCalled = false;
+static bool g_called = false;
 extern "C" void DlSymTestFunction() {
-  gCalled = true;
+  g_called = true;
 }
 
 TEST(dlfcn, dlsym_in_self) {
@@ -43,9 +43,9 @@
 
   void (*function)() = reinterpret_cast<void(*)()>(sym);
 
-  gCalled = false;
+  g_called = false;
   function();
-  ASSERT_TRUE(gCalled);
+  ASSERT_TRUE(g_called);
 
   ASSERT_EQ(0, dlclose(self));
 }
diff --git a/tests/pthread_test.cpp b/tests/pthread_test.cpp
index 6a5e4a6..b9a0c2c 100644
--- a/tests/pthread_test.cpp
+++ b/tests/pthread_test.cpp
@@ -560,27 +560,27 @@
   ASSERT_EQ(0, pthread_rwlock_destroy(&l));
 }
 
-static int gOnceFnCallCount = 0;
+static int g_once_fn_call_count = 0;
 static void OnceFn() {
-  ++gOnceFnCallCount;
+  ++g_once_fn_call_count;
 }
 
 TEST(pthread, pthread_once_smoke) {
   pthread_once_t once_control = PTHREAD_ONCE_INIT;
   ASSERT_EQ(0, pthread_once(&once_control, OnceFn));
   ASSERT_EQ(0, pthread_once(&once_control, OnceFn));
-  ASSERT_EQ(1, gOnceFnCallCount);
+  ASSERT_EQ(1, g_once_fn_call_count);
 }
 
-static int gAtForkPrepareCalls = 0;
-static void AtForkPrepare1() { gAtForkPrepareCalls = (gAtForkPrepareCalls << 4) | 1; }
-static void AtForkPrepare2() { gAtForkPrepareCalls = (gAtForkPrepareCalls << 4) | 2; }
-static int gAtForkParentCalls = 0;
-static void AtForkParent1() { gAtForkParentCalls = (gAtForkParentCalls << 4) | 1; }
-static void AtForkParent2() { gAtForkParentCalls = (gAtForkParentCalls << 4) | 2; }
-static int gAtForkChildCalls = 0;
-static void AtForkChild1() { gAtForkChildCalls = (gAtForkChildCalls << 4) | 1; }
-static void AtForkChild2() { gAtForkChildCalls = (gAtForkChildCalls << 4) | 2; }
+static int g_atfork_prepare_calls = 0;
+static void AtForkPrepare1() { g_atfork_prepare_calls = (g_atfork_prepare_calls << 4) | 1; }
+static void AtForkPrepare2() { g_atfork_prepare_calls = (g_atfork_prepare_calls << 4) | 2; }
+static int g_atfork_parent_calls = 0;
+static void AtForkParent1() { g_atfork_parent_calls = (g_atfork_parent_calls << 4) | 1; }
+static void AtForkParent2() { g_atfork_parent_calls = (g_atfork_parent_calls << 4) | 2; }
+static int g_atfork_child_calls = 0;
+static void AtForkChild1() { g_atfork_child_calls = (g_atfork_child_calls << 4) | 1; }
+static void AtForkChild2() { g_atfork_child_calls = (g_atfork_child_calls << 4) | 2; }
 
 TEST(pthread, pthread_atfork) {
   ASSERT_EQ(0, pthread_atfork(AtForkPrepare1, AtForkParent1, AtForkChild1));
@@ -591,13 +591,13 @@
 
   // Child and parent calls are made in the order they were registered.
   if (pid == 0) {
-    ASSERT_EQ(0x12, gAtForkChildCalls);
+    ASSERT_EQ(0x12, g_atfork_child_calls);
     _exit(0);
   }
-  ASSERT_EQ(0x12, gAtForkParentCalls);
+  ASSERT_EQ(0x12, g_atfork_parent_calls);
 
   // Prepare calls are made in the reverse order.
-  ASSERT_EQ(0x21, gAtForkPrepareCalls);
+  ASSERT_EQ(0x21, g_atfork_prepare_calls);
 }
 
 TEST(pthread, pthread_attr_getscope) {
diff --git a/tests/signal_test.cpp b/tests/signal_test.cpp
index af98964..89b8088 100644
--- a/tests/signal_test.cpp
+++ b/tests/signal_test.cpp
@@ -146,10 +146,10 @@
   ASSERT_EQ(SIGALRM, received_signal);
 }
 
-static int gSigSuspendTestHelperCallCount = 0;
+static int g_sigsuspend_test_helper_call_count = 0;
 
 static void SigSuspendTestHelper(int) {
-  ++gSigSuspendTestHelperCallCount;
+  ++g_sigsuspend_test_helper_call_count;
 }
 
 TEST(signal, sigsuspend_sigpending) {
@@ -172,7 +172,7 @@
 
   // Raise SIGALRM and check our signal handler wasn't called.
   raise(SIGALRM);
-  ASSERT_EQ(0, gSigSuspendTestHelperCallCount);
+  ASSERT_EQ(0, g_sigsuspend_test_helper_call_count);
 
   // We should now have a pending SIGALRM but nothing else.
   sigemptyset(&pending);
@@ -188,7 +188,7 @@
   ASSERT_EQ(-1, sigsuspend(&not_SIGALRM));
   ASSERT_EQ(EINTR, errno);
   // ...and check that we now receive our pending SIGALRM.
-  ASSERT_EQ(1, gSigSuspendTestHelperCallCount);
+  ASSERT_EQ(1, g_sigsuspend_test_helper_call_count);
 
   // Restore the original set.
   ASSERT_EQ(0, sigprocmask(SIG_SETMASK, &original_set, NULL));
diff --git a/tests/unistd_test.cpp b/tests/unistd_test.cpp
index ff05039..3f31861 100644
--- a/tests/unistd_test.cpp
+++ b/tests/unistd_test.cpp
@@ -114,18 +114,18 @@
   ASSERT_EQ(123, sb.st_size);
 }
 
-static bool gPauseTestFlag = false;
+static bool g_pause_test_flag = false;
 static void PauseTestSignalHandler(int) {
-  gPauseTestFlag = true;
+  g_pause_test_flag = true;
 }
 
 TEST(unistd, pause) {
   ScopedSignalHandler handler(SIGALRM, PauseTestSignalHandler);
 
   alarm(1);
-  ASSERT_FALSE(gPauseTestFlag);
+  ASSERT_FALSE(g_pause_test_flag);
   ASSERT_EQ(-1, pause());
-  ASSERT_TRUE(gPauseTestFlag);
+  ASSERT_TRUE(g_pause_test_flag);
 }
 
 TEST(unistd, read) {