When building glib with the Solaris Studio compilers, cc warns:

"gvariant.c", line 2621: warning: syntax error:  empty declaration

due to the extra semicolon hanging out after the end of the g_variant_print()
function:

   2615 gchar *
   2616 g_variant_print (GVariant *value,
   2617                  gboolean  type_annotate)
   2618 {
   2619   return g_string_free (g_variant_print_string (value, NULL, type_annotate),
   2620                         FALSE);
   2621 };

gcc will also flag it if you enable pedantic warnings:

gvariant.c: At top level:
gvariant.c:2621:2: warning: ISO C does not allow extra ‘;’ outside of a function [-Wpedantic]
 };
  ^