Mis-aligned pointers on x86

Question

Can someone provide an example were casting a pointer from one type to another fails due to mis-alignment?

In the comments to this answer, bothie states that doing s

Answer 1

char *foo = "....";
foo++;
int *bar = (int *)foo;

The compiler would put foo on a word boundary, and then when you increment it it's at a word+1, which is invalid for a int pointer.