GCC – No newline at end of file

Just a small post to understand why GCC complains that there is “No newline at end of file” :

> What is the rationale for this warning ? What can break or is it a
> standards thing ?

Imagine foo.h:

blah blah blah

Now bar.c:

#include "foo.h"
#include "grill.h"

Now imagine a preprocessor that isn't smart enough to put
the newline in for you...

blah blah blah#include "grill.h"

It may not include grill.h.

That’s obvious but I never thought about it =)