C23 auto x C++ auto.

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++.