🚀 go-pugleaf

In article <4hmslm$b3l@solutions.solon.com> glaurent@worldnet.net writes:

>I've got a question here : what if the same above declaration is made
>in two (or more) files, compiled seperately then linked together ?

>ie, in file a.c :

>extern int i = 1;

>...

>and in file b.c :

>extern int i = 2;

>If I understand correctly what you've said, both of these declarations
>will reserve space, and give i a value. My question is, what decides
>which value will actually be "used", and what happens to the "duplicate"
>space ?

Such a program is in error, and what happens is undefined.  Some
implementations will detect this error at link time and complain,
other will not.  I know of one implementation that will only detect
this some of time.

A valid program will only have one definition in all the modules.