mirror of
https://github.com/xemu-project/xemu.git
synced 2024-11-24 03:59:52 +00:00
fcf73f66a6
qobject_to_qfloat() and qobject_to_qint() crash on null, which is a trap for the unwary. Return null instead, and simplify a few callers. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <1444918537-18107-5-git-send-email-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
69 lines
1.3 KiB
C
69 lines
1.3 KiB
C
/*
|
|
* QFloat Module
|
|
*
|
|
* Copyright IBM, Corp. 2009
|
|
*
|
|
* Authors:
|
|
* Anthony Liguori <aliguori@us.ibm.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
|
|
* See the COPYING.LIB file in the top-level directory.
|
|
*
|
|
*/
|
|
|
|
#include "qapi/qmp/qfloat.h"
|
|
#include "qapi/qmp/qobject.h"
|
|
#include "qemu-common.h"
|
|
|
|
static void qfloat_destroy_obj(QObject *obj);
|
|
|
|
static const QType qfloat_type = {
|
|
.code = QTYPE_QFLOAT,
|
|
.destroy = qfloat_destroy_obj,
|
|
};
|
|
|
|
/**
|
|
* qfloat_from_int(): Create a new QFloat from a float
|
|
*
|
|
* Return strong reference.
|
|
*/
|
|
QFloat *qfloat_from_double(double value)
|
|
{
|
|
QFloat *qf;
|
|
|
|
qf = g_malloc(sizeof(*qf));
|
|
qf->value = value;
|
|
QOBJECT_INIT(qf, &qfloat_type);
|
|
|
|
return qf;
|
|
}
|
|
|
|
/**
|
|
* qfloat_get_double(): Get the stored float
|
|
*/
|
|
double qfloat_get_double(const QFloat *qf)
|
|
{
|
|
return qf->value;
|
|
}
|
|
|
|
/**
|
|
* qobject_to_qfloat(): Convert a QObject into a QFloat
|
|
*/
|
|
QFloat *qobject_to_qfloat(const QObject *obj)
|
|
{
|
|
if (!obj || qobject_type(obj) != QTYPE_QFLOAT) {
|
|
return NULL;
|
|
}
|
|
return container_of(obj, QFloat, base);
|
|
}
|
|
|
|
/**
|
|
* qfloat_destroy_obj(): Free all memory allocated by a
|
|
* QFloat object
|
|
*/
|
|
static void qfloat_destroy_obj(QObject *obj)
|
|
{
|
|
assert(obj != NULL);
|
|
g_free(qobject_to_qfloat(obj));
|
|
}
|