diff --git a/gcc/fortran/array.c b/gcc/fortran/array.c
index e6917a5..b2f5613 100644
--- a/gcc/fortran/array.c
+++ b/gcc/fortran/array.c
@@ -2563,7 +2563,7 @@ cleanup:
    characterizes the reference.  */
 
 gfc_array_ref *
-gfc_find_array_ref (gfc_expr *e)
+gfc_find_array_ref (gfc_expr *e, bool allow_null)
 {
   gfc_ref *ref;
 
@@ -2573,7 +2573,12 @@ gfc_find_array_ref (gfc_expr *e)
       break;
 
   if (ref == NULL)
-    gfc_internal_error ("gfc_find_array_ref(): No ref found");
+    {
+      if (allow_null)
+	return NULL;
+      else
+	gfc_internal_error ("gfc_find_array_ref(): No ref found");
+    }
 
   return &ref->u.ar;
 }
diff --git a/gcc/fortran/data.c b/gcc/fortran/data.c
index 139ce88..ea19732 100644
--- a/gcc/fortran/data.c
+++ b/gcc/fortran/data.c
@@ -483,7 +483,10 @@ gfc_assign_data_value (gfc_expr *lvalue, gfc_expr *rvalue, mpz_t index,
 
   if (ref || last_ts->type == BT_CHARACTER)
     {
-      if (lvalue->ts.u.cl->length == NULL && !(ref && ref->u.ss.length != NULL))
+      /* An initializer has to be constant.  */
+      if (rvalue->expr_type != EXPR_CONSTANT
+	  || (lvalue->ts.u.cl->length == NULL
+	      && !(ref && ref->u.ss.length != NULL)))
 	return false;
       expr = create_character_initializer (init, last_ts, ref, rvalue);
     }
diff --git a/gcc/fortran/gfortran.h b/gcc/fortran/gfortran.h
index 670c13a..6a8d6eb 100644
--- a/gcc/fortran/gfortran.h
+++ b/gcc/fortran/gfortran.h
@@ -3207,7 +3208,7 @@ bool gfc_check_constructor (gfc_expr *, bool (*)(gfc_expr *));
 bool gfc_array_size (gfc_expr *, mpz_t *);
 bool gfc_array_dimen_size (gfc_expr *, int, mpz_t *);
 bool gfc_array_ref_shape (gfc_array_ref *, mpz_t *);
-gfc_array_ref *gfc_find_array_ref (gfc_expr *);
+gfc_array_ref *gfc_find_array_ref (gfc_expr *, bool a = false);
 tree gfc_conv_array_initializer (tree type, gfc_expr *);
 bool spec_size (gfc_array_spec *, mpz_t *);
 bool spec_dimen_size (gfc_array_spec *, int, mpz_t *);
diff --git a/gcc/fortran/interface.c b/gcc/fortran/interface.c
index 8afba84..b1d11c5 100644
--- a/gcc/fortran/interface.c
+++ b/gcc/fortran/interface.c
@@ -2803,6 +2803,7 @@ compare_actual_formal (gfc_actual_arglist **ap, gfc_formal_arglist *formal,
   int i, n, na;
   unsigned long actual_size, formal_size;
   bool full_array = false;
+  gfc_array_ref *actual_arr_ref;
 
   actual = *ap;
 
@@ -2942,37 +2943,38 @@ compare_actual_formal (gfc_actual_arglist **ap, gfc_formal_arglist *formal,
 	 and assumed-shape dummies, the string length needs to match
 	 exactly.  */
       if (a->expr->ts.type == BT_CHARACTER
-	   && a->expr->ts.u.cl && a->expr->ts.u.cl->length
-	   && a->expr->ts.u.cl->length->expr_type == EXPR_CONSTANT
-	   && f->sym->ts.u.cl && f->sym->ts.u.cl && f->sym->ts.u.cl->length
-	   && f->sym->ts.u.cl->length->expr_type == EXPR_CONSTANT
-	   && (f->sym->attr.pointer || f->sym->attr.allocatable
-	       || (f->sym->as && f->sym->as->type == AS_ASSUMED_SHAPE))
-	   && (mpz_cmp (a->expr->ts.u.cl->length->value.integer,
-			f->sym->ts.u.cl->length->value.integer) != 0))
-	 {
-	   if (where && (f->sym->attr.pointer || f->sym->attr.allocatable))
-	     gfc_warning (OPT_Wargument_mismatch,
-			  "Character length mismatch (%ld/%ld) between actual "
-			  "argument and pointer or allocatable dummy argument "
-			  "%qs at %L",
-			  mpz_get_si (a->expr->ts.u.cl->length->value.integer),
-			  mpz_get_si (f->sym->ts.u.cl->length->value.integer),
-			  f->sym->name, &a->expr->where);
-	   else if (where)
-	     gfc_warning (OPT_Wargument_mismatch,
-			  "Character length mismatch (%ld/%ld) between actual "
-			  "argument and assumed-shape dummy argument %qs "
-			  "at %L",
-			  mpz_get_si (a->expr->ts.u.cl->length->value.integer),
-			  mpz_get_si (f->sym->ts.u.cl->length->value.integer),
-			  f->sym->name, &a->expr->where);
-	   return 0;
-	 }
+	  && a->expr->ts.u.cl && a->expr->ts.u.cl->length
+	  && a->expr->ts.u.cl->length->expr_type == EXPR_CONSTANT
+	  && f->sym->ts.type == BT_CHARACTER && f->sym->ts.u.cl
+	  && f->sym->ts.u.cl->length
+	  && f->sym->ts.u.cl->length->expr_type == EXPR_CONSTANT
+	  && (f->sym->attr.pointer || f->sym->attr.allocatable
+	      || (f->sym->as && f->sym->as->type == AS_ASSUMED_SHAPE))
+	  && (mpz_cmp (a->expr->ts.u.cl->length->value.integer,
+		       f->sym->ts.u.cl->length->value.integer) != 0))
+	{
+	  if (where && (f->sym->attr.pointer || f->sym->attr.allocatable))
+	    gfc_warning (OPT_Wargument_mismatch,
+			 "Character length mismatch (%ld/%ld) between actual "
+			 "argument and pointer or allocatable dummy argument "
+			 "%qs at %L",
+			 mpz_get_si (a->expr->ts.u.cl->length->value.integer),
+			 mpz_get_si (f->sym->ts.u.cl->length->value.integer),
+			 f->sym->name, &a->expr->where);
+	  else if (where)
+	    gfc_warning (OPT_Wargument_mismatch,
+			 "Character length mismatch (%ld/%ld) between actual "
+			 "argument and assumed-shape dummy argument %qs "
+			 "at %L",
+			 mpz_get_si (a->expr->ts.u.cl->length->value.integer),
+			 mpz_get_si (f->sym->ts.u.cl->length->value.integer),
+			 f->sym->name, &a->expr->where);
+	  return 0;
+	}
 
       if ((f->sym->attr.pointer || f->sym->attr.allocatable)
-	    && f->sym->ts.deferred != a->expr->ts.deferred
-	    && a->expr->ts.type == BT_CHARACTER)
+	  && f->sym->ts.deferred != a->expr->ts.deferred
+	  && a->expr->ts.type == BT_CHARACTER)
 	{
 	  if (where)
 	    gfc_error ("Actual argument at %L to allocatable or "
@@ -3195,15 +3197,20 @@ compare_actual_formal (gfc_actual_arglist **ap, gfc_formal_arglist *formal,
 	  return 0;
 	}
 
+      /* Find the last array_ref.  */
+      actual_arr_ref = NULL;
+      if (a->expr->ref)
+	actual_arr_ref = gfc_find_array_ref (a->expr, true);
+
       if (f->sym->attr.volatile_
-	  && a->expr->ref && a->expr->ref->u.ar.type == AR_SECTION
+	  && actual_arr_ref && actual_arr_ref->type == AR_SECTION
 	  && !(f->sym->as && f->sym->as->type == AS_ASSUMED_SHAPE))
 	{
 	  if (where)
 	    gfc_error ("Array-section actual argument at %L is "
 		       "incompatible with the non-assumed-shape "
 		       "dummy argument %qs due to VOLATILE attribute",
-		       &a->expr->where,f->sym->name);
+		       &a->expr->where, f->sym->name);
 	  return 0;
 	}
 
diff --git a/gcc/fortran/module.c b/gcc/fortran/module.c
index e727ade..713f272 100644
--- a/gcc/fortran/module.c
+++ b/gcc/fortran/module.c
@@ -4710,6 +4710,7 @@ load_omp_udrs (void)
 
       mio_lparen ();
       mio_pool_string (&name);
+      gfc_clear_ts (&ts);
       mio_typespec (&ts);
       if (strncmp (name, "operator ", sizeof ("operator ") - 1) == 0)
 	{
diff --git a/gcc/fortran/trans-decl.c b/gcc/fortran/trans-decl.c
index f659a48..a7a5e2a 100644
--- a/gcc/fortran/trans-decl.c
+++ b/gcc/fortran/trans-decl.c
@@ -1053,7 +1053,7 @@ gfc_build_qualified_array (tree decl, gfc_symbol * sym)
       layout_type (type);
     }
 
-  if (TYPE_NAME (type) != NULL_TREE
+  if (TYPE_NAME (type) != NULL_TREE && as->rank > 0
       && GFC_TYPE_ARRAY_UBOUND (type, as->rank - 1) != NULL_TREE
       && VAR_P (GFC_TYPE_ARRAY_UBOUND (type, as->rank - 1)))
     {
diff --git a/gcc/fortran/trans-expr.c b/gcc/fortran/trans-expr.c
index cbfad0b..2f45d40 100644
--- a/gcc/fortran/trans-expr.c
+++ b/gcc/fortran/trans-expr.c
@@ -2864,9 +2864,9 @@ gfc_conv_cst_int_power (gfc_se * se, tree lhs, tree rhs)
     return 0;
 
   m = wrhs.to_shwi ();
-  /* There's no ABS for HOST_WIDE_INT, so here we go. It also takes care
-     of the asymmetric range of the integer type.  */
-  n = (unsigned HOST_WIDE_INT) (m < 0 ? -m : m);
+  /* Use the wide_int's routine to reliably get the absolute value on all
+     platforms.  Then convert it to a HOST_WIDE_INT like above.  */
+  n = wi::abs (wrhs).to_shwi ();
 
   type = TREE_TYPE (lhs);
   sgn = tree_int_cst_sgn (rhs);
diff --git a/gcc/fortran/trans-stmt.c b/gcc/fortran/trans-stmt.c
index d34bdba..d9e185f 100644
--- a/gcc/fortran/trans-stmt.c
+++ b/gcc/fortran/trans-stmt.c
@@ -6483,7 +6483,8 @@ gfc_trans_deallocate (gfc_code *code)
 		    && !(!last && expr->symtree->n.sym->attr.pointer))
 		{
 		  if (is_coarray && expr->rank == 0
-		      && (!last || !last->u.c.component->attr.dimension))
+		      && (!last || !last->u.c.component->attr.dimension)
+		      && GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (se.expr)))
 		    {
 		      /* Add the ref to the data member only, when this is not
 			 a regular array or deallocate_alloc_comp will try to
