README.md

POC: Duplication of variable in headers

$ gcc -o a.out *.c && ./a.out
one: 4
two: 4
one: 42
two: 4

header.h

#ifndef HEADER_H
# define HEADER_H

static int value = 4;

#endif

one.c

#include <stdio.h>
#include "header.h"

void checkValue(void);

int main(void) {
	printf("one: %d\n", value);
	checkValue();
	value = 42;
	printf("one: %d\n", value);
	checkValue();
}

two.c

#include <stdio.h>
#include "header.h"

void checkValue(void) {
	printf("two: %d\n", value);
}