#include "libavutil/error.h"
+#if !defined(va_copy) && defined(_MSC_VER)
+#define va_copy(dst, src) ((dst) = (src))
+#endif
+
int avpriv_snprintf(char *s, size_t n, const char *fmt, ...)
{
va_list ap;
va_list ap)
{
int ret;
+ va_list ap_copy;
if (n == 0)
- return 0;
+ return _vscprintf(fmt, ap);
else if (n > INT_MAX)
return AVERROR(EOVERFLOW);
* _snprintf/_vsnprintf() to workaround this problem.
* See http://msdn.microsoft.com/en-us/library/1kt27hek(v=vs.80).aspx */
memset(s, 0, n);
- ret = _vsnprintf(s, n - 1, fmt, ap);
+ va_copy(ap_copy, ap);
+ ret = _vsnprintf(s, n - 1, fmt, ap_copy);
+ va_end(ap_copy);
if (ret == -1)
- ret = n;
+ ret = _vscprintf(fmt, ap);
return ret;
}