commit 5a920efa41b717560b8f7ac45ebcd3c474cfac00
Author: Jason Merrill <jason@redhat.com>
Date: Fri Jan 8 17:54:23 2016 -0500
PR c++/69131
* method.c (walk_field_subobs): Add dtor_from_ctor parm.
(process_subob_fn): Likewise. Don't consider triviality if true.
(synthesize_method_walk): Pass it.
@@ -1097,7 +1097,7 @@ is_trivially_xible (enum tree_code code, tree to, tree from)
static void
process_subob_fn (tree fn, tree *spec_p, bool *trivial_p,
bool *deleted_p, bool *constexpr_p,
- bool diag, tree arg)
+ bool diag, tree arg, bool dtor_from_ctor = false)
{
if (!fn || fn == error_mark_node)
goto bad;
@@ -1109,7 +1109,7 @@ process_subob_fn (tree fn, tree *spec_p, bool *trivial_p,
*spec_p = merge_exception_specifiers (*spec_p, raises);
}
- if (!trivial_fn_p (fn))
+ if (!trivial_fn_p (fn) && !dtor_from_ctor)
{
if (trivial_p)
*trivial_p = false;
@@ -1142,14 +1142,17 @@ process_subob_fn (tree fn, tree *spec_p, bool *trivial_p,
}
/* Subroutine of synthesized_method_walk to allow recursion into anonymous
- aggregates. */
+ aggregates. If DTOR_FROM_CTOR is true, we're walking subobject destructors
+ called from a synthesized constructor, in which case we don't consider
+ the triviality of the subobject destructor. */
static void
walk_field_subobs (tree fields, tree fnname, special_function_kind sfk,
int quals, bool copy_arg_p, bool move_p,
bool assign_p, tree *spec_p, bool *trivial_p,
bool *deleted_p, bool *constexpr_p,
- bool diag, int flags, tsubst_flags_t complain)
+ bool diag, int flags, tsubst_flags_t complain,
+ bool dtor_from_ctor = false)
{
tree field;
for (field = fields; field; field = DECL_CHAIN (field))
@@ -1285,7 +1288,7 @@ walk_field_subobs (tree fields, tree fnname, special_function_kind sfk,
rval = locate_fn_flags (mem_type, fnname, argtype, flags, complain);
process_subob_fn (rval, spec_p, trivial_p, deleted_p,
- constexpr_p, diag, field);
+ constexpr_p, diag, field, dtor_from_ctor);
}
}
@@ -1515,7 +1518,7 @@ synthesized_method_walk (tree ctype, special_function_kind sfk, bool const_p,
NULL_TREE, flags, complain);
process_subob_fn (rval, NULL, NULL,
deleted_p, NULL, false,
- basetype);
+ basetype, /*dtor_from_ctor*/true);
}
}
}
@@ -1530,7 +1533,7 @@ synthesized_method_walk (tree ctype, special_function_kind sfk, bool const_p,
sfk_destructor, TYPE_UNQUALIFIED, false,
false, false, NULL, NULL,
deleted_p, NULL,
- false, flags, complain);
+ false, flags, complain, /*dtor_from_ctor*/true);
pop_scope (scope);
new file mode 100644
@@ -0,0 +1,15 @@
+// PR c++/69131
+// { dg-do compile { target c++11 } }
+
+struct X
+{
+ ~X() {}
+};
+
+union U
+{
+ X x;
+ ~U() {}
+};
+
+U u;