wmemcpy_s.cpp File Reference

#include <corecrt_internal.h>
#include <wchar.h>

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Functions
errno_t __cdecl	wmemcpy_s (wchar_t *const destination, size_t const size_in_elements, wchar_t const *const source, size_t const count)

Function Documentation

wmemcpy_s()

errno_t __cdecl wmemcpy_s	(	wchar_t *const	destination,
		size_t const	size_in_elements,
		wchar_t const *const	source,
		size_t const	count
	)

Definition at line 18 of file wmemcpy_s.cpp.

{
    if (count == 0)
        return 0;
 
    _VALIDATE_RETURN_ERRCODE(destination != nullptr, EINVAL);
 
    if (source == nullptr || size_in_elements < count)
    {
        // Zero the destination buffer:
        wmemset(destination, 0, size_in_elements);
 
        _VALIDATE_RETURN_ERRCODE(source != nullptr, EINVAL);
        _VALIDATE_RETURN_ERRCODE(size_in_elements >= count, ERANGE);
        
        // Useless, but prefast is confused:
        return EINVAL;
    }
 
#pragma warning(suppress:__WARNING_BANNED_API_USAGEL2) /* 28726 */
    wmemcpy(destination, source, count);
    return 0;
}