ssize_t r = readlink (filename, buffer, buf_size);
size_t link_length = r;
- if (r < 0)
+ /* On AIX 5L v5.3 and HP-UX 11i v2 04/09, readlink returns -1
+ with errno == ERANGE if the buffer is too small. */
+ if (r < 0 && errno != ERANGE)
{
int saved_errno = errno;
free (buffer);