Re: C23 auto x C++ auto.

On Sun, 26 May 2024 10:49:30 -0300
Thiago Adams <thiago.adams@gmail.com> wrote:
 

I think most people is not aware of this:
>
  From 3096 C23 draft
>
"
6.7.9 Type inference
...
   2 For such a declaration that is the definition of an object the
init- declarator shall have the form
>
     direct-declarator = assignment-expression
"
>
Basically "direct-declarator" differs from "declarator" because it
does not contains pointer.
>
Then the type inference using auto and pointer is something undefined
in C23.
>
struct node{
      struct node * next;
>
};
int main(){
     struct node node = {};
     auto * p = node.next;
}
>
<source>:7:4: error: 'auto' requires a plain identifier, possibly
with attributes, as declarator
      7 |    auto * p = node.next;
        |    ^~~~
>
This differs from C++.
>
>

 Differs in positive way. Less confusing.