X-Git-Url: http://woldlab.caltech.edu/gitweb/?p=tabix.git;a=blobdiff_plain;f=TabixReader.java;h=752f71c930daa53ec6801358ec19e50064cc2233;hp=acaff24ef0349b91f393093d5151b6bc32ca1a9d;hb=36e5c2e93cc97d22f8b33768602d511697fa1adf;hpb=c70c92b7a385548d8e670638a93a083401f49e4d

diff --git a/TabixReader.java b/TabixReader.java
index acaff24..752f71c 100644
--- a/TabixReader.java
+++ b/TabixReader.java
@@ -93,6 +93,8 @@ public class TabixReader
 
 	private static int reg2bins(final int beg, final int _end, final int[] list) {
 		int i = 0, k, end = _end;
+		if (beg >= end) return 0;
+		if (end >= 1<<29) end = 1<<29;
 		--end;
 		list[i++] = 0;
 		for (k =    1 + (beg>>26); k <=    1 + (end>>26); ++k) list[i++] = k;
@@ -320,7 +322,9 @@ public class TabixReader
 		TIndex idx = mIndex[tid];
 		int[] bins = new int[MAX_BIN];
 		int i, l, n_off, n_bins = reg2bins(beg, end, bins);
-		min_off = (beg>>TAD_LIDX_SHIFT >= idx.l.length)? idx.l[idx.l.length-1] : idx.l[beg>>TAD_LIDX_SHIFT];
+		if (idx.l.length > 0)
+			min_off = (beg>>TAD_LIDX_SHIFT >= idx.l.length)? idx.l[idx.l.length-1] : idx.l[beg>>TAD_LIDX_SHIFT];
+		else min_off = 0;
 		for (i = n_off = 0; i < n_bins; ++i) {
 			if ((chunks = idx.b.get(bins[i])) != null)
 				n_off += chunks.length;