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-rw-r--r--generic/tcl.h2
-rw-r--r--win/tclWinPort.h4
2 files changed, 5 insertions, 1 deletions
diff --git a/generic/tcl.h b/generic/tcl.h
index e76eb58..5de113d 100644
--- a/generic/tcl.h
+++ b/generic/tcl.h
@@ -361,7 +361,7 @@ typedef long LONG;
*/
#if !defined(TCL_WIDE_INT_TYPE)&&!defined(TCL_WIDE_INT_IS_LONG)
-# if defined(_MSC_VER) || defined(_WIN32)
+# if defined(_WIN32) && (!defined(__USE_MINGW_ANSI_STDIO) || !__USE_MINGW_ANSI_STDIO)
# define TCL_WIDE_INT_TYPE __int64
# define TCL_LL_MODIFIER "I64"
# if defined(_WIN64)
diff --git a/win/tclWinPort.h b/win/tclWinPort.h
index 94c8e87..d0b689f 100644
--- a/win/tclWinPort.h
+++ b/win/tclWinPort.h
@@ -18,6 +18,10 @@
/* See [Bug 3354324]: file mtime sets wrong time */
# define __MINGW_USE_VC2005_COMPAT
#endif
+#if !defined(__USE_MINGW_ANSI_STDIO)
+/* See [Bug c975939973]: Usage of gnu_printf in latest mingw-w64 */
+# define __USE_MINGW_ANSI_STDIO 0
+#endif
#if defined(_MSC_VER) && defined(_WIN64) && !defined(STATIC_BUILD) \
&& !defined(MP_32BIT) && !defined(MP_64BIT)
# define MP_64BIT