Clang has this nice feature that it will warn you when you passed wrong arguments to printf:

#include <stdio.h>
int main(){
        long long u = 10;
        printf("%c", u);
}

clang something.c:
something.c:4:15: warning: format specifies type 'int' but the argument has type 'long long' [-Wformat]

With the CTFE power of D, we should be able to do the same thing when the format string is available at compile time. Instead of throwing exceptions at run time.

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