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-rw-r--r--src/corelib/tools/qdatetime.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/corelib/tools/qdatetime.h b/src/corelib/tools/qdatetime.h
index d1cc10c877..d1d7f5792e 100644
--- a/src/corelib/tools/qdatetime.h
+++ b/src/corelib/tools/qdatetime.h
@@ -118,6 +118,9 @@ QT_DEPRECATED inline bool setYMD(int y, int m, int d)
inline qint64 toJulianDay() const { return jd; }
private:
+#if defined(min) || defined(max)
+#error min or max defined, cannot continue. If this is caused by an #include of windows.h, NOMINMAX can be defined.
+#endif
static inline qint64 nullJd() { return std::numeric_limits<qint64>::min(); }
static inline qint64 minJd() { return Q_INT64_C(-784350574879); }
static inline qint64 maxJd() { return Q_INT64_C( 784354017364); }