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Change varobj_iter::next to return unique_ptr

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This changes varobj_iter::next to return a unique_ptr.  This fits in
with the ongoing theme of trying to express these ownership transfers
via the type system.

gdb/ChangeLog
2020-12-11  Tom Tromey  <tom@tromey.com>

	* varobj.c (update_dynamic_varobj_children): Update.
	* varobj-iter.h (struct varobj_iter) <next>: Change return type.
	* python/py-varobj.c (struct py_varobj_iter) <next>: Change return
	type.
	(py_varobj_iter::next): Likewise.
This commit is contained in:
Tom Tromey 2020-12-11 09:33:36 -07:00
parent 54746ce37a
commit 60ee72f6d3
4 changed files with 16 additions and 10 deletions
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10
gdb/varobj.c
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@ -719,12 +719,12 @@ update_dynamic_varobj_children (struct varobj *var,
are more children. */
for (; to < 0 || i < to + 1; ++i)
{
varobj_item *item;
std::unique_ptr<varobj_item> item;
/* See if there was a leftover from last time. */
if (var->dynamic->saved_item != NULL)
{
item = var->dynamic->saved_item;
item = std::unique_ptr<varobj_item> (var->dynamic->saved_item);
var->dynamic->saved_item = NULL;
}
else
@ -753,13 +753,11 @@ update_dynamic_varobj_children (struct varobj *var,
can_mention ? newobj : NULL,
can_mention ? unchanged : NULL,
can_mention ? cchanged : NULL, i,
item);
delete item;
item.get ());
}
else
{
var->dynamic->saved_item = item;
var->dynamic->saved_item = item.release ();
/* We want to truncate the child list just before this
element. */