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PackedScene: Prevent crash when root node has parent attribute

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The crash happens further down when setting an invalid owner in
`Node::_set_owner_nocheck` but I couldn't figure out how to fix it.

But here the proper fix is to catch the invalid scene file early on
and fail loading it.

Part of #17372.
This commit is contained in:
Rémi Verschelde 2020-06-08 13:05:09 +02:00
parent 87b2d3f9cf
commit c080ec5da2
2 changed files with 10 additions and 7 deletions
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14
editor/editor_node.cpp
View file

@ -903,19 +903,19 @@ void EditorNode::_dialog_display_load_error(String p_file, Error p_error) {
if (p_error) {
switch (p_error) {
case ERR_CANT_OPEN: {
show_accept(vformat(TTR("Can't open '%s'. The file could have been moved or deleted."), p_file.get_file()), TTR("OK"));
show_accept(vformat(TTR("Can't open file '%s'. The file could have been moved or deleted."), p_file.get_file()), TTR("OK"));
} break;
case ERR_PARSE_ERROR: {
show_accept(vformat(TTR("Error while parsing '%s'."), p_file.get_file()), TTR("OK"));
show_accept(vformat(TTR("Error while parsing file '%s'."), p_file.get_file()), TTR("OK"));
} break;
case ERR_FILE_CORRUPT: {
show_accept(vformat(TTR("Unexpected end of file '%s'."), p_file.get_file()), TTR("OK"));
show_accept(vformat(TTR("Scene file '%s' appears to be invalid/corrupt."), p_file.get_file()), TTR("OK"));
} break;
case ERR_FILE_NOT_FOUND: {
show_accept(vformat(TTR("Missing '%s' or its dependencies."), p_file.get_file()), TTR("OK"));
show_accept(vformat(TTR("Missing file '%s' or one its dependencies."), p_file.get_file()), TTR("OK"));
} break;
default: {
show_accept(vformat(TTR("Error while loading '%s'."), p_file.get_file()), TTR("OK"));
show_accept(vformat(TTR("Error while loading file '%s'."), p_file.get_file()), TTR("OK"));
} break;
}
}
@ -3254,13 +3254,13 @@ Error EditorNode::load_scene(const String &p_scene, bool p_ignore_broken_deps, b
if (!new_scene) {
sdata.unref();
_dialog_display_load_error(lpath, ERR_FILE_NOT_FOUND);
_dialog_display_load_error(lpath, ERR_FILE_CORRUPT);
opening_prev = false;
if (prev != -1) {
set_current_scene(prev);
editor_data.remove_scene(idx);
}
return ERR_FILE_NOT_FOUND;
return ERR_FILE_CORRUPT;
}
if (p_set_inherited) {

3
scene/resources/packed_scene.cpp
View file

@ -98,6 +98,9 @@ Node *SceneState::instance(GenEditState p_edit_state) const {
}
#endif
parent = nparent;
} else {
// i == 0 is root node. Confirm that it doesn't have a parent defined.
ERR_FAIL_COND_V_MSG(n.parent != -1, nullptr, vformat("Invalid scene: root node %s cannot specify a parent node.", snames[n.name]));
}
Node *node = nullptr;