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#include <setjmp.h>
#include <signal.h>
#include <stdlib.h>
void siglongjmp(sigjmp_buf buf, int ret)
{
unsigned long *flag = buf + sizeof(jmp_buf)/sizeof(long) - 1;
sigset_t *mask = (void *)(flag + 1);
if (*flag)
sigprocmask (SIG_SETMASK, mask, NULL);
longjmp((void *)buf, ret);
}
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