re PR fortran/48298 ([F03] User-Defined Derived-Type IO (DTIO))

2016-09-26  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/48298
	* interface.c (gfc_find_specific_dtio_proc) : Return NULL if
	the derived type is broken, as indicated by a flavor other than
	FL_DERIVED.

From-SVN: r240493

gcc/fortran/ChangeLog

+2016-09-26  Paul Thomas  <pault@gcc.gnu.org>
+
+	PR fortran/48298
+	* interface.c (gfc_find_specific_dtio_proc) : Return NULL if
+	the derived type is broken, as indicated by a flavor other than
+	FL_DERIVED.
+
 2016-09-26  Marek Polacek  <polacek@redhat.com>
 
 	PR c/7652
@@ -12,7 +19,7 @@
 
 2016-09-25  Steven G. Kargl  <kargl@gcc.gnu.org>
 
-	PR fortran/77429 
+	PR fortran/77429
 	* dependency.c (gfc_check_dependency):  Convert gcc_assert() to
 	a conditional and possible call to  gfc_internal_error().
 

gcc/fortran/interface.c

@@ -4793,6 +4793,9 @@ gfc_find_specific_dtio_proc (gfc_symbol *derived, bool write, bool formatted)
   gfc_typebound_proc *tb_io_proc, *specific_proc;
   bool t = false;
 
+  if (!derived || derived->attr.flavor != FL_DERIVED)
+    return NULL;
+
   /* Try to find a typebound DTIO binding.  */
   if (formatted == true)
     {