__wcpncpy_chk

Name

__wcpncpy_chk -- copy a fixed-size string of wide characters, returning a pointer to its end, with buffer overflow checking

Synopsis

#include <wchar.h>

wchar_t * __wcpncpy_chk(wchar_t * dest, const wchar_t * src, size_t n, size_t destlen);

Description

The interface __wcpncpy_chk() shall function in the same way as the interface wcpncpy(), except that __wcpncpy_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 n exceeds destlen, the function shall abort and the program calling it shall exit.

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