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#define _GNU_SOURCE #include <signal.h>
#define SST_SIZE (_NSIG/8)
int sigorset(sigset_t *dest, sigset_t *left, sigset_t *right) { unsigned long i = 0, *d = (void*) dest, *l = (void*) left, *r = (void*) right; for(; i < SST_SIZE; i++) d[i] = l[i] | r[i]; return 0; }