Work around Android KitKat tzset bug
On KitKat, calling tzset with UTC+nn doesn't initialize all the
timezone state. If the previous timezone was something like
America/Chicago, then changing it to UTC+nn might have no effect.
Setting the timezone to an intermediate value like "UTC" avoids the
problem.
Works around https://github.com/android/ndk/issues/1604.
PiperOrigin-RevId: 413050236
Change-Id: I99b2d3330ae68f1d58cd2ca278d3eaae30bd1e83
diff --git a/googletest/test/gtest_unittest.cc b/googletest/test/gtest_unittest.cc
index c079f46..6b2632a 100644
--- a/googletest/test/gtest_unittest.cc
+++ b/googletest/test/gtest_unittest.cc
@@ -450,6 +450,12 @@
tzset();
GTEST_DISABLE_MSC_WARNINGS_POP_()
#else
+#if GTEST_OS_LINUX_ANDROID && __ANDROID_API__ < 21
+ // Work around KitKat bug in tzset by setting "UTC" before setting "UTC+00".
+ // See https://github.com/android/ndk/issues/1604.
+ setenv("TZ", "UTC", 1);
+ tzset();
+#endif
if (time_zone) {
setenv(("TZ"), time_zone, 1);
} else {
