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authorPatsy Franklin <pfrankli@redhat.com>2017-08-29 15:53:28 +0200
committerFlorian Weimer <fweimer@redhat.com>2017-08-29 15:53:28 +0200
commit1cf1232cd4721dc155a5cf7d571e5b1dae506430 (patch)
treebb78b85294b07816b899e8ecac58b9bc5a41475a /wcsmbs
parentf11f2f6e145d6fc6b52f6b0733599f8b96595733 (diff)
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gconv: Consistently mangle NULL function pointers [BZ #22025]
Not mangling NULL pointers is not safe because with very low
probability, a non-NULL function pointer can turn into a NULL pointer
after mangling.
Diffstat (limited to 'wcsmbs')
-rw-r--r--wcsmbs/btowc.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/wcsmbs/btowc.c b/wcsmbs/btowc.c
index 22464dc5e2..97fb7170f3 100644
--- a/wcsmbs/btowc.c
+++ b/wcsmbs/btowc.c
@@ -46,15 +46,15 @@ __btowc (int c)
   /* Get the conversion functions.  */
   fcts = get_gconv_fcts (_NL_CURRENT_DATA (LC_CTYPE));
   __gconv_btowc_fct btowc_fct = fcts->towc->__btowc_fct;
+#ifdef PTR_DEMANGLE
+  if (fcts->towc->__shlib_handle != NULL)
+    PTR_DEMANGLE (btowc_fct);
+#endif
 
   if (__builtin_expect (fcts->towc_nsteps == 1, 1)
       && __builtin_expect (btowc_fct != NULL, 1))
     {
       /* Use the shortcut function.  */
-#ifdef PTR_DEMANGLE
-      if (fcts->towc->__shlib_handle != NULL)
-	PTR_DEMANGLE (btowc_fct);
-#endif
       return DL_CALL_FCT (btowc_fct, (fcts->towc, (unsigned char) c));
     }
   else