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-rw-r--r--src/stdio/vsprintf_s.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/stdio/vsprintf_s.c b/src/stdio/vsprintf_s.c
index 02a0899f..38500801 100644
--- a/src/stdio/vsprintf_s.c
+++ b/src/stdio/vsprintf_s.c
@@ -1,12 +1,14 @@
#include <stdio.h>
#include <stdarg.h>
#include <stdint.h>
+#include <string.h>
#include "_stdio.h"
/** write formatted output to a string **/
int vsprintf_s(char *s, rsize_t n, const char *format, va_list arg)
{
SIGNAL_SAFE(0);
+ ASSERT_NOOVERLAP(s, n, format, strlen(format));
(void)n;
return vsnprintf(s, SIZE_MAX, format, arg);
}