Check for empty interval lists to merge

git-svn-id: file:///humgen/gsa-scr1/gsa-engineering/svn_contents/trunk@1664 348d0f76-0448-11de-a6fe-93d51630548a
2009-09-21 04:34:26 +00:00 · 2009-09-21 04:34:26 +00:00 · 7b627fd622
parent 7f5778c966
commit 7b627fd622
1 changed files with 1 additions and 1 deletions
--- a/java/src/org/broadinstitute/sting/gatk/walkers/indels/IntervalMergerWalker.java
+++ b/java/src/org/broadinstitute/sting/gatk/walkers/indels/IntervalMergerWalker.java
@ -57,7 +57,7 @@ public class IntervalMergerWalker extends ReadWalker<Integer,Integer> {
    @Override
    public void initialize() {
        intervals = parseIntervals(intervalsSource);
-        currentInterval = intervals.removeFirst();
+        currentInterval = (intervals.size() > 0 ? intervals.removeFirst() : null);
    }

    @Override