diff --git a/gcc/fortran/ChangeLog b/gcc/fortran/ChangeLog
index 834e7d0f0d33..020f11d8c44e 100644
--- a/gcc/fortran/ChangeLog
+++ b/gcc/fortran/ChangeLog
@@ -1,3 +1,7 @@
+2008-11-29  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* trans-array.c (gfc_conv_array_parameter): Guard union access.
+
 2008-11-29  Janus Weil  <janus@gcc.gnu.org>
 	    Mikael Morin <mikael@gcc.gnu.org>
 
diff --git a/gcc/fortran/trans-array.c b/gcc/fortran/trans-array.c
index 06d2e3d0ca57..2b23f15cba4b 100644
--- a/gcc/fortran/trans-array.c
+++ b/gcc/fortran/trans-array.c
@@ -5206,7 +5206,8 @@ gfc_conv_array_parameter (gfc_se * se, gfc_expr * expr, gfc_ss * ss, int g77,
   stmtblock_t block;
 
   full_array_var = (expr->expr_type == EXPR_VARIABLE
-		      && expr->ref->u.ar.type == AR_FULL);
+		    && expr->ref->type == REF_ARRAY
+		    && expr->ref->u.ar.type == AR_FULL);
   sym = full_array_var ? expr->symtree->n.sym : NULL;
 
   /* The symbol should have an array specification.  */