Function GetEnv

tests/gtest/gtest.h:2353–2366

inline const char* StrError(int errnum) { return strerror(errnum); }
#endif
inline const char* GetEnv(const char* name) {
#if GTEST_OS_WINDOWS_MOBILE || GTEST_OS_WINDOWS_PHONE || GTEST_OS_WINDOWS_RT
  // We are on Windows CE, which has no environment variables.
  static_cast<void>(name);  // To prevent 'unused argument' warning.
  return nullptr;
#elif defined(__BORLANDC__) || defined(__SunOS_5_8) || defined(__SunOS_5_9)
  // Environment variables which we programmatically clear will be set to the
  // empty string rather than unset (NULL).  Handle that case.
  const char* const env = getenv(name);
  return (env != nullptr && env[0] != '\0') ? env : nullptr;
#else
  return getenv(name);
#endif
}

GTEST_DISABLE_MSC_DEPRECATED_POP_()