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-rw-r--r--glib/gdatetime.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/glib/gdatetime.c b/glib/gdatetime.c
index 02cc3bd01..a43efab0b 100644
--- a/glib/gdatetime.c
+++ b/glib/gdatetime.c
@@ -80,6 +80,11 @@
#ifndef G_OS_WIN32
#include <sys/time.h>
#include <time.h>
+#else
+#if defined (_MSC_VER) && (_MSC_VER < 1800)
+/* fallback implementation for isnan() on VS2012 and earlier */
+#define isnan _isnan
+#endif
#endif /* !G_OS_WIN32 */
/**