Different debugging results when using CLion debugger GUI and system-wide gdb

```c

/*
 * main.c 
 */

#include <stdio.h>

extern void fun_3_7();
int main(int argc, char *argv[]) {

	fun_3_7();
	return 0;
}


/*
 * fun_3_7.c 
 */
#include <stdio.h>

void fun_3_7() {
	double result = 0;
	char expression[255] = {0};

	printf("Input the expressions: ");
        //Debug here
	int i = 0;
	printf("i : %d\n", i);
	int length = i;
	printf("\n");
}

```

----

Using CLion debugger GUI:

Using system-wide gdb:

Also, I set CLion debugger to use system-wide GDB. Still, it doesn't work. As you can see below:

Is it a bug or something? what can I do? I really like CLion debugger GUI. But it gave me wrong results.