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fixed an integer overflow

This commit is contained in:
Heng Li 2017-06-06 22:20:45 -04:00
parent c1c946aa67
commit 77c76c1e14
1 changed files with 1 additions and 1 deletions
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2
chain.c
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@ -89,7 +89,7 @@ int mm_chain_dp(int max_dist, int bw, int max_skip, int min_sc, int n, mm128_t *
j = p[j];
} while (j >= 0 && t[j] == 0);
if (j < 0) u[k++] = u[i]>>32<<32 | (n_v - n_v0);
else if ((u[i]>>32) - f[j] >= min_sc) u[k++] = ((u[i]>>32) - f[j]) << 32 | (n_v - n_v0);
else if ((int32_t)(u[i]>>32) - f[j] >= min_sc) u[k++] = ((u[i]>>32) - f[j]) << 32 | (n_v - n_v0);
else n_v0 = n_v;
for (j = 0; j < (n_v - n_v0) >> 1; ++j) { // reverse v[] such that the smallest index comes the first
int32_t t = v[n_v0 + j];