The combination of compound literals and variadic macros is indeed pretty neat. It can also be used to implement Java-style variadic functions (ie when the variadic parameters have a single type):

    #define sum(...) \
        sum_(sizeof ((int []){ __VA_ARGS__ }) / sizeof (int), (int []){ __VA_ARGS__ })
    
    int sum_(size_t count, int values[])
    {
        int s = 0;
        while(count--) s += values[count];
        return s;
    }

You'd call the macro as

    int s = sum(1, -32, 5);

nice idea!

Hello, I am the author of the linked blog. Your idea is indeed very neat too. Refer to the comment made in the blog by Jens Gustedt. It has lots of potential imo