Error: invalid array assignment

Didn’t you get a warning here?

Classic buffer overrun.

Will print lots of garbage, i think. You MAY damage the memory (depending on the size of .bss section). If the .bss is large enough then it will print the phrase above plus some garbage.

If .bss is small, then god knows what will happen. On ESP32 (has MMU) it will be memory access exception. On UNO (ancient CPU, afaik) probably no exception