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#ifndef FORTIFY_STDIO_H_
#define FORTIFY_STDIO_H_
#include_next <stdio.h>
#if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0 && defined(__OPTIMIZE__) && __OPTIMIZE__ > 0
static inline
__attribute__ ((always_inline))
__attribute__ ((__format__ (printf, 3, 0)))
__attribute__ ((__nonnull__ (3)))
int __fortify_vsnprintf(char *__restrict s, size_t n, const char *__restrict fmt, __va_list ap)
{
size_t bos = __builtin_object_size(s, 0);
if (bos == (size_t)-1)
return vsnprintf(s, n, fmt, ap);
if (__builtin_constant_p(n) && n > bos)
__builtin_trap();
return vsnprintf(s, n, fmt, ap);
}
#undef vsnprintf
#define vsnprintf(s, n, fmt, ap) __fortify_vsnprintf(s, n, fmt, ap)
#endif
#endif
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