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-rw-r--r--win/tclWinPort.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/win/tclWinPort.h b/win/tclWinPort.h
index 4fe8754..ca58470 100644
--- a/win/tclWinPort.h
+++ b/win/tclWinPort.h
@@ -454,7 +454,9 @@
#if defined(_MSC_VER) || defined(__MINGW32__)
# define environ _environ
-# define hypot _hypot
+# if defined(_MSC_VER) && (_MSC_VER < 1600)
+# define hypot _hypot
+# endif
# define exception _exception
# undef EDEADLOCK
# if defined(__MINGW32__) && !defined(__MSVCRT__)