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-rw-r--r--pr66035.patch48
1 files changed, 48 insertions, 0 deletions
diff --git a/pr66035.patch b/pr66035.patch
new file mode 100644
index 000000000000..c51822ca1f2c
--- /dev/null
+++ b/pr66035.patch
@@ -0,0 +1,48 @@
+--- a/gcc/fortran/trans-expr.c
++++ a/gcc/fortran/trans-expr.c
+@@ -6897,6 +6897,30 @@ alloc_scalar_allocatable_for_subcomponent_assignment (stmtblock_t *block,
+ TREE_TYPE (tmp), tmp,
+ fold_convert (TREE_TYPE (tmp), size));
+ }
++ else if (cm->ts.type == BT_CLASS)
++ {
++ gcc_assert (expr2->ts.type == BT_CLASS || expr2->ts.type == BT_DERIVED);
++ if (expr2->ts.type == BT_DERIVED)
++ {
++ tmp = gfc_get_symbol_decl (gfc_find_vtab (&expr2->ts));
++ tmp = gfc_build_addr_expr (NULL_TREE, tmp);
++ size = fold_convert (size_type_node, gfc_vptr_size_get (tmp));
++ }
++ else
++ {
++ gfc_expr *e2vtab;
++ gfc_se se;
++ e2vtab = gfc_find_and_cut_at_last_class_ref (expr2);
++ gfc_add_vptr_component (e2vtab);
++ gfc_add_size_component (e2vtab);
++ gfc_init_se (&se, NULL);
++ gfc_conv_expr (&se, e2vtab);
++ gfc_add_block_to_block (block, &se.pre);
++ size = fold_convert (size_type_node, se.expr);
++ gfc_free_expr (e2vtab);
++ }
++ size_in_bytes = size;
++ }
+ else
+ {
+ /* Otherwise use the length in bytes of the rhs. */
+@@ -7068,6 +7092,14 @@ gfc_trans_subcomponent_assign (tree dest, gfc_component * cm, gfc_expr * expr,
+ tmp = gfc_build_memcpy_call (tmp, se.expr, size);
+ gfc_add_expr_to_block (&block, tmp);
+ }
++ else if (cm->ts.type == BT_CLASS && expr->ts.type == BT_CLASS)
++ {
++ tmp = gfc_copy_class_to_class (se.expr, dest, integer_one_node,
++ CLASS_DATA (cm)->attr.unlimited_polymorphic);
++ gfc_add_expr_to_block (&block, tmp);
++ gfc_add_modify (&block, gfc_class_vptr_get (dest),
++ gfc_class_vptr_get (se.expr));
++ }
+ else
+ gfc_add_modify (&block, tmp,
+ fold_convert (TREE_TYPE (tmp), se.expr));