https://svn.boost.org/trac10/ticket/3949 <p> POSIX allows to rename/move a file over another, unlike Windows. Currently, Boost (according to source code) explicitly adds a check against this, using an exists() call. However, sometimes POSIX behavior is desired, to avoid extra remove() call. </p> <p> Moreover, since exist()/remove()/rename() is inherently non-atomic (as are all filesystem operation), this unnecessarily (on POSIX) creates another race-condition point. </p> <p> Request: change rename prototype to rename(from, to, overwrite = false) and adjust code accordingly. If 'overwrite' is false (default) it will work just as now, so the change is fully backward-compatible. If overwrite is 'true', POSIX implementation will just omit its exist() check, while Windows implementation will call remove(to) and catch errors. </p> en-us /htdocs/site/boost.png https://svn.boost.org/trac10/ticket/3949 Trac 1.4.3