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check underflows, aig fixes

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-01-14 19:46:27 -08:00
parent 82cacdf569
commit 0d614b8c36
3 changed files with 16 additions and 33 deletions
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2
src/util/mpq.h
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@ -640,6 +640,8 @@ public:
void set(mpq & a, int n, int d) {
SASSERT(d != 0);
if (d < 0) {
SASSERT(d != INT_MIN);
SASSERT(n != INT_MIN);
n = -n;
d = -d;
}