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MCOL-176 Stop the arethmetic underflow

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This commit is contained in:
David Hall
2016-09-22 09:30:20 -05:00
parent 7bf6e55a58
commit 76b4f3dd95
1 changed files with 8 additions and 0 deletions
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8
utils/funcexp/func_div.cpp
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@ -24,6 +24,8 @@
#include <cstdlib>
#include <string>
#include <sstream>
#define __STDC_LIMIT_MACROS
#include <stdint.h>
using namespace std;
#include "functor_real.h"
@ -56,6 +58,12 @@ int64_t Func_div::getIntVal(rowgroup::Row& row,
return 0;
}
int64_t int_val1 = (int64_t)(val1 > 0 ? val1 + 0.5 : val1 - 0.5);
// MCOL-176 If abs(int_val2) is small enough (like -1), then, this may cause overflow.
// This kludge stops the crash.
if (int_val1 == INT64_MIN)
{
--int_val1;
}
return int_val1 / int_val2;
}