[Bug c/78359] Redeclaration of global variables is not reported

[robert.kollataj at ac dot com.pl]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78359

--- Comment #2 from hugo74 <robert.kollataj at ac dot com.pl> ---
(In reply to Andrew Pinski from comment #1)
> Because 
> int Counter
> 
> in the global scope is consider a tentative definition.

What is meant by "tentative declaration" ? It is very misleading.
It should not work that way. I checked it in other C compilers and each of them
reports an redefinition error in such case.