ref: 7f97283caf68c268e67d612a89c156918b4f8be8
dir: /sys/src/ape/lib/ap/stdio/exit.c/
#include <unistd.h>
#define NONEXIT 34
int (*_atexitfns[NONEXIT])(void);
void _doatexits(void){
int i, (*f)(void);
for(i = NONEXIT-1; i >= 0; i--)
if(_atexitfns[i]){
f = _atexitfns[i];
_atexitfns[i] = 0; /* self defense against bozos */
(*f)();
}
}
void exit(int status)
{
_doatexits();
_exit(status);
}