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fixup larger than 2**31 case.

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git-svn-id: file:///svn/unbound/trunk@4432 be551aaa-1e26-0410-a405-d3ace91eadb9
This commit is contained in:
Wouter Wijngaards 2018-01-02 12:43:43 +00:00
parent 44eb7bfd25
commit fa90bbc07a
1 changed files with 5 additions and 1 deletions
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6
validator/val_sigcrypt.c
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@ -1235,7 +1235,11 @@ subtract_1918(uint32_t a, uint32_t b)
if(a < b && b - a < cutoff) {
return b-a;
}
return a-b;
if(a > b && a - b > cutoff) {
return ((uint32_t)0xffffffff) - (a-b);
}
/* wrong case, b smaller than a */
return 0;
}
/** check rrsig dates */