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
This commit is contained in:
Abseil Team 2021-11-29 20:52:52 -08:00 committed by Copybara-Service
parent e2f3978937
commit bb9216085f

View File

@ -450,6 +450,12 @@ class FormatEpochTimeInMillisAsIso8601Test : public Test {
tzset(); tzset();
GTEST_DISABLE_MSC_WARNINGS_POP_() GTEST_DISABLE_MSC_WARNINGS_POP_()
#else #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) { if (time_zone) {
setenv(("TZ"), time_zone, 1); setenv(("TZ"), time_zone, 1);
} else { } else {