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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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6
gdb/python/py-varobj.c
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@ -26,7 +26,7 @@ struct py_varobj_iter : public varobj_iter
py_varobj_iter (struct varobj *var, gdbpy_ref<> &&pyiter);
~py_varobj_iter () override;
varobj_item *next () override;
std::unique_ptr<varobj_item> next () override;
private:
@ -55,7 +55,7 @@ py_varobj_iter::~py_varobj_iter ()
/* Implementation of the 'next' method of pretty-printed varobj
iterators. */
varobj_item *
std::unique_ptr<varobj_item>
py_varobj_iter::next ()
{
PyObject *py_v;
@ -117,7 +117,7 @@ py_varobj_iter::next ()
vitem->name = name;
m_next_raw_index++;
return vitem;
return std::unique_ptr<varobj_item> (vitem);
}
/* Constructor of pretty-printed varobj iterators. VAR is the varobj