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| author | Alexander Graf <agraf@suse.de> | 2013-04-30 15:02:16 +0200 |
|---|---|---|
| committer | Anthony Liguori <aliguori@us.ibm.com> | 2013-04-30 09:40:11 -0500 |
| commit | 9ab880b3a2f4b80bd5d8b18a312b3afed65dc036 (patch) | |
| tree | 1b06a72abee6ccbffdaa2d875f7d4664201ea73d /qom/object.c | |
| parent | b7da6c60814a5c8703e9fa0d943ec3240e9d94ab (diff) | |
| download | focaccia-qemu-9ab880b3a2f4b80bd5d8b18a312b3afed65dc036.tar.gz focaccia-qemu-9ab880b3a2f4b80bd5d8b18a312b3afed65dc036.zip | |
QOM: Fail casts for unknown types
When we try to cast an object to an unknown type, fail the cast. Today we would simply run into an assert(). This fixes a bug on qemu-system-s390x for me that gets triggered by the audio code looking for PCI and ISA buses. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1367326936-28539-1-git-send-email-agraf@suse.de Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'qom/object.c')
| -rw-r--r-- | qom/object.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/qom/object.c b/qom/object.c index dd53d242a5..75e6aac15f 100644 --- a/qom/object.c +++ b/qom/object.c @@ -453,6 +453,11 @@ ObjectClass *object_class_dynamic_cast(ObjectClass *class, TypeImpl *type = class->type; ObjectClass *ret = NULL; + if (!target_type) { + /* target class type unknown, so fail the cast */ + return NULL; + } + if (type->class->interfaces && type_is_ancestor(target_type, type_interface)) { int found = 0; |