C forbids braced-groups within expressions [-Wpedantic] 531 | ({ | ^ /nix/store/jd6h07kk8y8pxlha2gisrzfifpscm5kq-pipewire-1.2.7-dev/include/spa-0.2/spa/pod/parser.h:556:9: note: in expansion of macro 'spa_callbacks_call_res' 127 | spa_callbacks_call_res(&builder->callbacks, | ^~~~~~~~~~~~~~~~~~~~~~ /nix/store/jd6h07kk8y8pxlha2gisrzfifpscm5kq-pipewire-1.2.7-dev/include/spa-0.2/spa/support/thread.h:101:9: note: in expansion of macro 'spa_pod_parse_object' 26 |