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qfloat qint: Make conversion from QObject * accept null

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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>
This commit is contained in:
Markus Armbruster 2015-10-15 16:15:35 +02:00
parent 89cad9f3ec
commit fcf73f66a6
4 changed files with 21 additions and 22 deletions
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4
qobject/qfloat.c
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@ -51,9 +51,9 @@ double qfloat_get_double(const QFloat *qf)
*/
QFloat *qobject_to_qfloat(const QObject *obj)
{
if (qobject_type(obj) != QTYPE_QFLOAT)
if (!obj || qobject_type(obj) != QTYPE_QFLOAT) {
return NULL;
}
return container_of(obj, QFloat, base);
}