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Add a sanity check to avoid divide by zero crashes in set_target

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Con Kolivas 2013-11-02 08:46:13 +11:00
parent 8abe9d4e39
commit e95b42ea54
1 changed files with 6 additions and 0 deletions
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6
cgminer.c
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@ -5926,6 +5926,12 @@ void set_target(unsigned char *dest_target, double diff)
uint64_t *data64, h64; uint64_t *data64, h64;
double d64, dcut64; double d64, dcut64;
if (unlikely(diff == 0.0)) {
/* This shouldn't happen but best we check to prevent a crash */
applog(LOG_ERR, "Diff zero passed to set_target");
diff = 1.0;
}
d64 = truediffone; d64 = truediffone;
if (opt_scrypt) if (opt_scrypt)
d64 *= (double)65536; d64 *= (double)65536;