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diff -up a2ps-4.14/lib/encoding.c.bad-free a2ps-4.14/lib/encoding.c
--- a2ps-4.14/lib/encoding.c.bad-free 2013-04-30 11:49:50.511962062 +0100
+++ a2ps-4.14/lib/encoding.c 2013-04-30 11:52:18.682573468 +0100
@@ -541,7 +541,9 @@ encoding_resolve_font_substitute (struct
{
/* Find if there is a substitute for that font */
res = pair_get (encoding->substitutes, font_name);
- if (!res)
+ if (res)
+ res = xstrdup (res);
+ else
/* No. Check if this font is supported */
if (font_exists (job, font_name))
/* Avoid returning sth alloca'd */