ISO C forbids braced-groups within expressions [-Wpedantic] 5 | ({ | ^ ../subprojects/cava-0.10.2/src/output/common.c:35:29: note: in expansion of macro 'spa_loop_utils_method_s' 356 | #define pw_loop_add_signal(l,...) spa_loop_utils_add_signal((l)->utils,__VA_ARGS__) |