This has the advantage that we're only copying strlen(src) characters, like in the strncpy_s() case, not fill all of [dst,len) with NULs, like strncpy() is wont to do. [ChangeLog][Important Behavior Changes][qstrncpy()] On non-Windows platforms, no longer writes to all bytes of the target buffer, but stops after the terminating NUL. This was already the behavior on Windows. Change-Id: Ic86206f418affae6d0d88dfe79537eeb833a7daa Reviewed-by: Thiago Macieira <thiago.macieira@intel.com> Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io> Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>