unicorn/qemu/scripts
Eric Blake 264748ad06
qapi: Track all failures between visit_start/stop
Inside the generated code between visit_start_struct() and
visit_end_struct(), we were blindly setting the error into
the caller's errp parameter. But a future patch to split
visit_end_struct() will require that we take action based
on whether an error has occurred, which requires us to track
all actions through a local err. Rewrite the visits to be
more in line with the other generated calls.

Generated code changes look like:

| visit_start_struct(v, (void **)obj, "Abort", name, sizeof(Abort), &err);
|- if (!err) {
|- if (*obj) {
|- visit_type_Abort_fields(v, obj, errp);
|- }
|- visit_end_struct(v, &err);
|+ if (err) {
|+ goto out;
| }
|+ if (!*obj) {
|+ goto out_obj;
|+ }
|+ visit_type_Abort_fields(v, obj, &err);
|+ error_propagate(errp, err);
|+ err = NULL;
|+out_obj:
|+ visit_end_struct(v, &err);
|+out:
| error_propagate(errp, err);
| }

Backports commit 92b09babc11b60458c28cfe37eaa314de50e6241 from qemu
2018-02-19 22:19:40 -05:00
..
create_config more cleanup qemu/configure 2017-01-19 14:11:54 +08:00
make_device_config.sh fix file perms 2015-08-28 21:05:38 -07:00
ordereddict.py import 2015-08-21 15:04:50 +08:00
qapi-event.py qapi: Improve generated event use of qapi visitor 2018-02-19 22:18:31 -05:00
qapi-types.py qapi-types: Drop unnedeed ._fwdefn 2018-02-19 21:53:45 -05:00
qapi-visit.py qapi: Track all failures between visit_start/stop 2018-02-19 22:19:40 -05:00
qapi.py qapi: Improve generated event use of qapi visitor 2018-02-19 22:18:31 -05:00