https://bugs.gentoo.org/show_bug.cgi?id=264614

--- src/scfd.c	2008/07/28 22:23:04	8895
+++ src/scfd.c	2008/07/29 04:44:05	8896
@@ -161,7 +161,7 @@
 /* makeup codes efficiently, since these are always a multiple of 64. */
 #define invert_data(rlen, black_byte, makeup_action, d)\
 	if ( rlen > qbit )\
-	{	*q++ ^= (1 << qbit) - 1;\
+	{	if (q >= ss->lbuf) *q++ ^= (1 << qbit) - 1; else q++;\
 		rlen -= qbit;\
 		switch ( rlen >> 3 )\
 		{\
--- src/gdevpdtb.c	2009-04-05 23:45:35.000000000 +0400
+++ src/gdevpdtb.c	2009-04-05 23:45:46.000000000 +0400
@@ -137,7 +137,7 @@
 			&st_pdf_base_font, "pdf_base_font_alloc");
     const gs_font_name *pfname = &font->font_name;
     gs_const_string font_name;
-    char fnbuf[3 + sizeof(long) / 3 + 1]; /* .F#######\0 */
+    char fnbuf[2*sizeof(long) + 3]; /* .F########\0 */
     int code;
 
     if (pbfont == 0)