--- mapm/reader.c.orig	1993-02-09 10:35:05.000000000 -0600
+++ mapm/reader.c	2013-12-11 22:45:33.000000000 -0600
@@ -48,6 +48,8 @@
 void read_raw_trait();
 void write_traits();
 
+void add_to_seg_dist();
+
 bool uppercase_genotypes; /* set by read_raw_header() for read_raw_f2_locus()*/
 
 real **trait=NULL;
@@ -881,6 +883,7 @@
 
 
 
+void
 add_to_seg_dist(c,locus)
 char c;
 int locus;