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Diffstat (limited to 'absl/time/internal/cctz/include/cctz/civil_time_detail.h')
-rw-r--r--absl/time/internal/cctz/include/cctz/civil_time_detail.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/absl/time/internal/cctz/include/cctz/civil_time_detail.h b/absl/time/internal/cctz/include/cctz/civil_time_detail.h
index a5923f13..bb191b3f 100644
--- a/absl/time/internal/cctz/include/cctz/civil_time_detail.h
+++ b/absl/time/internal/cctz/include/cctz/civil_time_detail.h
@@ -21,7 +21,7 @@
#include <type_traits>
// Disable constexpr support unless we are in C++14 mode.
-#if __cpp_constexpr >= 201304 || _MSC_VER >= 1910
+#if __cpp_constexpr >= 201304 || (defined(_MSC_VER) && _MSC_VER >= 1910)
#define CONSTEXPR_D constexpr // data
#define CONSTEXPR_F constexpr // function
#define CONSTEXPR_M constexpr // member