diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index bcc39c7b31d5..5542414afc79 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2017-10-11  David Edelsohn  <dje.gcc@gmail.com>
+
+	* config/rs6000/rs6000.c
+	(rs6000_xcoff_asm_output_aligned_decl_common): Test for NULL decl.
+
 2017-10-11  Segher Boessenkool  <segher@kernel.crashing.org>
 
 	* config/rs6000/predicates.md (zero_constant, all_ones_constant):
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index e8684821c985..e6e254ac0414 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -34375,7 +34375,8 @@ rs6000_xcoff_asm_output_aligned_decl_common (FILE *stream,
 	   size, align2);
 
 #ifdef HAVE_GAS_HIDDEN
-  fputs (rs6000_xcoff_visibility (decl), stream);
+  if (decl != NULL)
+    fputs (rs6000_xcoff_visibility (decl), stream);
 #endif
   putc ('\n', stream);
 }