--- pmcstat_log.c.orig	2012-04-27 15:50:05.000000000 +0400
+++ pmcstat_log.c	2012-04-27 15:50:56.000000000 +0400
@@ -565,6 +565,8 @@
 	image->pi_symcount += newsyms;
 
 	assert(newsyms <= nfuncsyms);
+	if(image->pi_symcount == 0)
+	    return;
 
 	/*
 	 * Return space to the system if there were duplicates.