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Remove more uses of explicit reference counting in Python

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This changes some more place in the Python code to use gdbpy_ref
rather than explicit reference counting.  While doing this I found a
latent bug in typy_fields_items -- it was not checking for errors in
one spot.  I also changed valpy_dealloc to use Py_XDECREF rather than
an explicit "if".

gdb/ChangeLog
2019-01-03  Tom Tromey  <tom@tromey.com>

	* python/py-value.c (valpy_dealloc): Use Py_XDECREF.
	* python/py-type.c (typy_fields_items): Use gdbpy_ref.
	* python/py-progspace.c (pspy_set_printers): Use gdbpy_ref.
	(pspy_set_frame_filters, pspy_set_frame_unwinders)
	(pspy_set_type_printers): Likewise.
	* python/py-function.c (fnpy_init): Use gdbpy_ref.
	* python/py-cmd.c (cmdpy_init): Use gdbpy_ref.
	* python/py-objfile.c (objfpy_set_printers): Use gdbpy_ref.
	(objfpy_set_frame_filters, objfpy_set_frame_unwinders)
	(objfpy_set_type_printers): Likewise.
This commit is contained in:
Tom Tromey 2018-12-27 11:53:20 -07:00
parent 5c329e6ab4
commit 2a3c71d68d
7 changed files with 39 additions and 57 deletions
Download patch file Download diff file Expand all files Collapse all files

16
gdb/python/py-objfile.c
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@ -240,7 +240,6 @@ objfpy_get_printers (PyObject *o, void *ignore)
static int
objfpy_set_printers (PyObject *o, PyObject *value, void *ignore)
{
PyObject *tmp;
objfile_object *self = (objfile_object *) o;
if (! value)
@ -258,10 +257,9 @@ objfpy_set_printers (PyObject *o, PyObject *value, void *ignore)
}
/* Take care in case the LHS and RHS are related somehow. */
tmp = self->printers;
gdbpy_ref<> tmp (self->printers);
Py_INCREF (value);
self->printers = value;
Py_XDECREF (tmp);
return 0;
}
@ -281,7 +279,6 @@ objfpy_get_frame_filters (PyObject *o, void *ignore)
static int
objfpy_set_frame_filters (PyObject *o, PyObject *filters, void *ignore)
{
PyObject *tmp;
objfile_object *self = (objfile_object *) o;
if (! filters)
@ -299,10 +296,9 @@ objfpy_set_frame_filters (PyObject *o, PyObject *filters, void *ignore)
}
/* Take care in case the LHS and RHS are related somehow. */
tmp = self->frame_filters;
gdbpy_ref<> tmp (self->frame_filters);
Py_INCREF (filters);
self->frame_filters = filters;
Py_XDECREF (tmp);
return 0;
}
@ -323,7 +319,6 @@ objfpy_get_frame_unwinders (PyObject *o, void *ignore)
static int
objfpy_set_frame_unwinders (PyObject *o, PyObject *unwinders, void *ignore)
{
PyObject *tmp;
objfile_object *self = (objfile_object *) o;
if (!unwinders)
@ -341,10 +336,9 @@ objfpy_set_frame_unwinders (PyObject *o, PyObject *unwinders, void *ignore)
}
/* Take care in case the LHS and RHS are related somehow. */
tmp = self->frame_unwinders;
gdbpy_ref<> tmp (self->frame_unwinders);
Py_INCREF (unwinders);
self->frame_unwinders = unwinders;
Py_XDECREF (tmp);
return 0;
}
@ -376,7 +370,6 @@ objfpy_get_xmethods (PyObject *o, void *ignore)
static int
objfpy_set_type_printers (PyObject *o, PyObject *value, void *ignore)
{
PyObject *tmp;
objfile_object *self = (objfile_object *) o;
if (! value)
@ -394,10 +387,9 @@ objfpy_set_type_printers (PyObject *o, PyObject *value, void *ignore)
}
/* Take care in case the LHS and RHS are related somehow. */
tmp = self->type_printers;
gdbpy_ref<> tmp (self->type_printers);
Py_INCREF (value);
self->type_printers = value;
Py_XDECREF (tmp);
return 0;
}