diff options
Diffstat (limited to 'games/primes/primes.c')
| -rw-r--r-- | games/primes/primes.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/games/primes/primes.c b/games/primes/primes.c index 33838ee..f5f1faf 100644 --- a/games/primes/primes.c +++ b/games/primes/primes.c @@ -111,7 +111,7 @@ main(int argc, char *argv[]) argv += optind; start = 0; - stop = BIG; + stop = (sizeof(ubig) > 4) ? SPSPMAX : BIG; /* * Convert low and high args. Strtoul(3) sets errno to @@ -138,6 +138,8 @@ main(int argc, char *argv[]) err(1, "%s", argv[1]); if (*p != '\0') errx(1, "%s: illegal numeric format.", argv[1]); + if ((uint64_t)stop > SPSPMAX) + errx(1, "%s: stop value too large.", argv[1]); break; case 1: /* Start on the command line. */ @@ -304,6 +306,10 @@ primes(ubig start, ubig stop) */ for (q = table; q < tab_lim; ++q, start+=2) { if (*q) { + if ((uint64_t)start > SIEVEMAX) { + if (!isprime(start)) + continue; + } printf(hflag ? "0x%lx\n" : "%lu\n", start); } } |
