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#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <assert.h>

// BROKEN

#define call_fn(fn) ( fn() )  // BUG:  () after fn
//                  └──┬───┘
//               expansion text


void greet() {
    printf("Hey, hey!\n");
}

int main(int argc, char* argv[]) {

    call_fn( greet() );
    
    return EXIT_SUCCESS;
}
/* vim: set tabstop=4 shiftwidth=4 fileencoding=utf-8 noexpandtab: */

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