X-Gentoo-Bug: 279819
Upstream-Patch: http://procps.cvs.sourceforge.net/viewvc/procps/procps/top.c?r1=1.132&r2=1.134
--- top.c	2008/03/24 04:41:26	1.132
+++ top.c	2009/12/10 11:37:48	1.134
@@ -2190,7 +2190,10 @@
 // Value a window's name and make the associated group name.
 static void win_names (WIN_t *q, const char *name)
 {
-   sprintf(q->rc.winname, "%.*s", WINNAMSIZ -1, name);
+   // Note that src==dst is illegal in sprintf.
+   // Failure: amd64, glibc 2.9-20081201, gcc 4.3.4
+   if(q->rc.winname != name)
+      sprintf(q->rc.winname, "%.*s", WINNAMSIZ -1, name);
    sprintf(q->grpname, "%d:%.*s", q->winnum, WINNAMSIZ -1, name);
 }