struct Big { char data[5000]; };

int main() {
    switch (6) {
    case 0: {
        struct Big big;
        big.data[0] = 0; // do something
        return big.data[0];
    } break;
    case 1: {
        struct Big big;
        big.data[1] = 1;
        return big.data[1];
    } break;
    case 2: {
        struct Big big;
        big.data[2] = 2;
        big.data[2];
    } break;
    case 3: {
        struct Big big;
        big.data[3] = 3;
        return big.data[3];
    } break;
    case 4: {
        struct Big big;
        big.data[4] = 4;
        return big.data[4];
    } break;
    }
    return 0;
}

I suppose 5000 bytes is enough for main(), but Visual studio 2022 reported: “Warning C6262 Function uses ‘25000’ bytes of stack. Consider moving some data to heap.”

Does that mean out-of-scope local variables’ memory is not reused?