# define USE_SYSTEM_STRERROR 1
-# if defined __NetBSD__ || defined __hpux || ((defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__) || defined __sgi || (defined __sun && !defined _LP64) || defined __CYGWIN__
+# if defined __NetBSD__ || defined __hpux || (defined _WIN32 && !defined __CYGWIN__) || defined __sgi || (defined __sun && !defined _LP64) || defined __CYGWIN__
/* No locking needed. */
safe_copy (char *buf, size_t buflen, const char *msg)
{
size_t len = strlen (msg);
- int ret;
+ size_t moved = len < buflen ? len : buflen - 1;
- if (len < buflen)
- {
- /* Although POSIX allows memcpy() to corrupt errno, we don't
- know of any implementation where this is a real problem. */
- memcpy (buf, msg, len + 1);
- ret = 0;
- }
- else
- {
- memcpy (buf, msg, buflen - 1);
- buf[buflen - 1] = '\0';
- ret = ERANGE;
- }
- return ret;
+ /* Although POSIX lets memmove corrupt errno, we don't
+ know of any implementation where this is a real problem. */
+ memmove (buf, msg, moved);
+ buf[moved] = '\0';
+ return len < buflen ? 0 : ERANGE;
}
/* Try to do what strerror (errnum) does, but without clobbering the
buffer used by strerror(). */
-# if defined __NetBSD__ || defined __hpux || ((defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__) || defined __CYGWIN__ /* NetBSD, HP-UX, native Windows, Cygwin */
+# if defined __NetBSD__ || defined __hpux || (defined _WIN32 && !defined __CYGWIN__) || defined __CYGWIN__ /* NetBSD, HP-UX, native Windows, Cygwin */
/* NetBSD: sys_nerr, sys_errlist are declared through _NETBSD_SOURCE
and <errno.h> above.
#endif
-#if (defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__
+#if defined _WIN32 && !defined __CYGWIN__
/* MSVC 14 defines names for many error codes in the range 100..140,
but _sys_errlist contains strings only for the error codes
< _sys_nerr = 43. */