X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=LenDist.h;h=90d47d74522cbc90088ff8267b387046a533a0e3;hb=810375ef69e0de93188c6fa3819cfc584a32ff34;hp=f19babaa1bf79079f22c2fae4e3ce86926f6ea63;hpb=7b8405a9fe481d041d7e50d1d8abb4b589bdc0d3;p=rsem.git

diff --git a/LenDist.h b/LenDist.h
index f19baba..90d47d7 100644
--- a/LenDist.h
+++ b/LenDist.h
@@ -3,6 +3,7 @@
 
 #include<cstdio>
 #include<cstring>
+#include<cstdlib>
 #include<cassert>
 #include<algorithm>
 
@@ -189,6 +190,8 @@ void LenDist::finish() {
 		sum += pdf[i];
 	}
 
+	if (sum <= EPSILON) { fprintf(stderr, "No valid read to estimate the length distribution!\n"); exit(-1); }
+
 	for (int i = 1; i <= span; i++) {
 		pdf[i] = pdf[i] / sum;
 		cdf[i] = cdf[i - 1] + pdf[i];