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r904: fixed a corner-case segfault. Resolves #307.
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@@ -613,6 +613,7 @@ static void mm_align1(void *km, const mm_mapopt_t *opt, const mm_idx_t *mi, int
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if (++l > opt->min_cnt) {
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if (++l > opt->min_cnt) {
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l = rs0 - x > qs0 - y? rs0 - x : qs0 - y;
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l = rs0 - x > qs0 - y? rs0 - x : qs0 - y;
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rs1 = rs0 - l, qs1 = qs0 - l;
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rs1 = rs0 - l, qs1 = qs0 - l;
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if (rs1 < 0) rs1 = 0; // not strictly necessary; better have this guard for explicit
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break;
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break;
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}
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}
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}
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}
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@@ -626,6 +627,7 @@ static void mm_align1(void *km, const mm_mapopt_t *opt, const mm_idx_t *mi, int
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l = l < rs? l : rs;
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l = l < rs? l : rs;
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rs1 = rs1 > rs - l? rs1 : rs - l;
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rs1 = rs1 > rs - l? rs1 : rs - l;
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rs0 = rs0 < rs1? rs0 : rs1;
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rs0 = rs0 < rs1? rs0 : rs1;
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rs0 = rs0 < rs? rs0 : rs;
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} else rs0 = rs, qs0 = qs;
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} else rs0 = rs, qs0 = qs;
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// compute re0 and qe0
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// compute re0 and qe0
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re0 = (int32_t)a[r->as + r->cnt - 1].x + 1;
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re0 = (int32_t)a[r->as + r->cnt - 1].x + 1;
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@@ -665,7 +667,7 @@ static void mm_align1(void *km, const mm_mapopt_t *opt, const mm_idx_t *mi, int
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assert(re0 > rs0);
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assert(re0 > rs0);
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tseq = (uint8_t*)kmalloc(km, re0 - rs0);
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tseq = (uint8_t*)kmalloc(km, re0 - rs0);
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if (qs > 0 && rs > 0) { // left extension
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if (qs > 0 && rs > 0) { // left extension; probably the condition can be changed to "qs > qs0 && rs > rs0"
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qseq = &qseq0[rev][qs0];
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qseq = &qseq0[rev][qs0];
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mm_idx_getseq(mi, rid, rs0, rs, tseq);
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mm_idx_getseq(mi, rid, rs0, rs, tseq);
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mm_seq_rev(qs - qs0, qseq);
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mm_seq_rev(qs - qs0, qseq);
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