Hi all,
attached patch fixes the ICE when assigning null() to an allocatable
component in an initializer.
Bootstrapped and regtested on x86_64-linux/F23 ok for trunk,
gcc-6-branch and gcc-5-branch.
Ok for trunk and one week later for the other branches?
Regards,
Andre
--
Andre Vehreschild * Email: vehre ad gmx dot de
gcc/fortran/ChangeLog:
2016-07-14 Andre Vehreschild <ve...@gcc.gnu.org>
PR fortran/71807
* trans-expr.c (gfc_trans_subcomponent_assign): Special casing
when allocatable component is set to null() in initializer.
gcc/testsuite/ChangeLog:
2016-07-14 Andre Vehreschild <ve...@gcc.gnu.org>
PR fortran/71807
* gfortran.dg/null_9.f90: New test.
diff --git a/gcc/fortran/trans-expr.c b/gcc/fortran/trans-expr.c
index 4321850..e3559f4 100644
--- a/gcc/fortran/trans-expr.c
+++ b/gcc/fortran/trans-expr.c
@@ -7200,6 +7200,12 @@ gfc_trans_subcomponent_assign (tree dest, gfc_component * cm, gfc_expr * expr,
tmp = gfc_trans_alloc_subarray_assign (tmp, cm, expr);
gfc_add_expr_to_block (&block, tmp);
}
+ else if (init && cm->attr.allocatable && expr->expr_type == EXPR_NULL)
+ {
+ /* NULL initialization for allocatable components. */
+ gfc_add_modify (&block, dest, fold_convert (TREE_TYPE (dest),
+ null_pointer_node));
+ }
else if (init && (cm->attr.allocatable
|| (cm->ts.type == BT_CLASS && CLASS_DATA (cm)->attr.allocatable
&& expr->ts.type != BT_CLASS)))
diff --git a/gcc/testsuite/gfortran.dg/null_9.f90 b/gcc/testsuite/gfortran.dg/null_9.f90
new file mode 100644
index 0000000..9afd938
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/null_9.f90
@@ -0,0 +1,30 @@
+! { dg-do run }
+
+MODULE fold_convert_loc_ice
+ IMPLICIT NONE
+ PRIVATE
+
+ TYPE, PUBLIC :: ta
+ PRIVATE
+ INTEGER :: a_comp
+ END TYPE ta
+
+ TYPE, PUBLIC :: tb
+ TYPE(ta), ALLOCATABLE :: b_comp
+ END TYPE tb
+
+ PUBLIC :: proc
+CONTAINS
+ SUBROUTINE proc
+ TYPE(tb) :: b
+
+ b = tb(null())
+ if (allocated( b%b_comp )) call abort()
+ END SUBROUTINE proc
+END MODULE fold_convert_loc_ice
+
+ USE fold_convert_loc_ice
+
+ call proc()
+END
+
