ref: 42da25d1f1b2108c6fb982129e8a749a5f5d2000
dir: /src/libc/stdlib/atexit.c/
#include <stdlib.h>
#include <errno.h>
#undef atexit
extern void (*_exitf[_ATEXIT_MAX])(void);
extern unsigned _exitn;
int
atexit(void (*fun)(void))
{
if (_exitn == _ATEXIT_MAX) {
errno = ENOMEM;
return -1;
}
_exitf[_exitn++] = fun;
return 0;
}