Use bytes stored near other when pointer points to a bigger type.

console.sh-session

$ clang -Wall -Wextra -g3 ./main.c -o main && ./main
deadbeef

main.c

#include <stdio.h>

void fn(int *ptr) {
	printf("%x\n", *ptr);
}

int main() {
	short a = 0xdead;
	short b = 0xbeef;

	(void)a;
	fn((int*)&b);
}