__wcstombs_chk

Name

__wcstombs_chk -- convert a wide-character string to a multibyte string, with buffer overflow checking

Synopsis

#include <stdlib.h>

size_t __wcstombs_chk(char * dest, const wchar_t * src, size_t len, size_t destlen);

Description

The interface __wcstombs_chk() shall function in the same way as the interface wcstombs(), except that __wcstombs_chk() shall check for buffer overflow before computing a result. If an overflow is anticipated, the function shall abort and the program calling it shall exit.

The parameter destlen specifies the size of the object pointed to by dest. If len exceeds destlen, the function shall abort and the program calling it shall exit.

The __wcstombs_chk() function is not in the source standard; it is only in the binary standard.