DragonFly On-Line Manual Pages
_nc_freeall, _nc_free_and_exit, _nc_free_tinfo - curses memory-leak
These functions are used to simplify analysis of memory leaks in the
ncurses library. They are normally not available; they must be
configured into the library at build time using the --disable-leaks
option. That compiles-in code that frees memory that normally would
not be freed.
Any implementation of curses must not free the memory associated with a
screen, since (even after calling endwin), it must be available for use
in the next call to refresh(3X). There are also chunks of memory held
for performance reasons. That makes it hard to analyze curses
applications for memory leaks. When using the specially configured
debugging version of the ncurses library, applications can call
functions which free those chunks of memory, simplifying the process of
These functions are named with a "_nc_" prefix because they are not
intended for use in the non-debugging library:
This frees (almost) all of the memory allocated by ncurses.
This frees the memory allocated by ncurses (like _nc_freeall), and
exits the program. It is preferred over _nc_freeall since some of
that memory may be required to keep the application running.
Simply exiting (with the given exit-code) is safer.
Use this function if only the low-level terminfo functions (and
corresponding library) are used. Like _nc_free_and_exit, it exits
the program after freeing memory.
These functions do not return a value.
These functions are not part of X/Open Curses; nor do other
implementations of curses provide a similar feature.