test_fnptrs_v2.tc

test_fnptrs_v2.tc — fn-ptrs as struct fields (Phase B v2 probe)

Source on GitHub

// =================================================================
// test_fnptrs_v2.tc — fn-ptrs as struct fields (Phase B v2 probe)
// =================================================================

typedef void (*cmd_handler)(char args[]);

void do_on(char args[])  { addLog("DO_ON"); }
void do_off(char args[]) { addLog("DO_OFF"); }
void do_set(char args[]) {
    addLog("DO_SET args=[%s]", args);
}

struct CmdEntry {
    char         name[12];
    cmd_handler  handler;
}

CmdEntry  cmds[3];

int main() {
    addLog("=== fnptrs v2 probe start ===");

    // Populate the table
    strcpy(cmds[0].name, "ON");   cmds[0].handler = do_on;
    strcpy(cmds[1].name, "OFF");  cmds[1].handler = do_off;
    strcpy(cmds[2].name, "SET");  cmds[2].handler = do_set;

    // Lookup + indirect call through struct field
    char arg[16];
    strcpy(arg, "42");
    for (int i = 0; i < 3; i = i + 1) {
        cmds[i].handler(arg);
    }

    addLog("=== fnptrs v2 probe end ===");
    return 0;
}