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-rw-r--r--missing/explicit_bzero.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/missing/explicit_bzero.c b/missing/explicit_bzero.c
index 2409deca20..a7ff9cb517 100644
--- a/missing/explicit_bzero.c
+++ b/missing/explicit_bzero.c
@@ -1,5 +1,12 @@
+#ifndef __STDC_WANT_LIB_EXT1__
+#define __STDC_WANT_LIB_EXT1__ 1
+#endif
+
#include "ruby/missing.h"
#include <string.h>
+#ifdef HAVE_MEMSET_S
+# include <string.h>
+#endif
#ifdef _WIN32
#include <windows.h>