1 files changed, 15 insertions, 0 deletions
diff --git a/mdk-stage1/dietlibc/libstdio/vprintf.c b/mdk-stage1/dietlibc/libstdio/vprintf.c
new file mode 100644
index 000000000..7fe579e0a
--- /dev/null
+++ b/mdk-stage1/dietlibc/libstdio/vprintf.c
@@ -0,0 +1,15 @@
+#include <stdarg.h>
+#include <unistd.h>
+#include "dietstdio.h"
+
+int __stdio_outs(const char *s,size_t len) __attribute__((weak));
+int __stdio_outs(const char *s,size_t len) {
+  return (write(1,s,len)==(int)len)?1:0;
+}
+
+int vprintf(const char *format, va_list ap)
+{
+  struct arg_printf _ap = { 0, (int(*)(void*,size_t,void*)) __stdio_outs };
+  return __v_printf(&_ap,format,ap);
+}
+