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qom: Add error handler for object_property_print() 

Avoid the caller of object_property_print() leaking string
argument's memory, such as qdev_print_props() when
encounter errors.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
This commit is contained in:
Gonglei 2014-09-27 13:13:55 +08:00 committed by Andreas Färber
parent 688b057aec
commit 3a53009fa0
1 changed files with 10 additions and 2 deletions
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12
qom/object.c
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@ -1010,11 +1010,19 @@ char *object_property_print(Object *obj, const char *name, bool human,
Error **errp)
{
StringOutputVisitor *mo;
char *string;
char *string = NULL;
Error *local_err = NULL;
mo = string_output_visitor_new(human);
object_property_get(obj, string_output_get_visitor(mo), name, errp);
object_property_get(obj, string_output_get_visitor(mo), name, &local_err);
if (local_err) {
error_propagate(errp, local_err);
goto out;
}
string = string_output_get_string(mo);
out:
string_output_visitor_cleanup(mo);
return string;
}