I don't think such a warning exists. I remember posting something to this
list (maybe 2 years ago? buried in a somewhat unrelated thready I think)
about this. Apparently this is explicitly allowed by the standard.
On Fri, Dec 21, 2012 at 11:16 AM, John Peterson <jwpeter...@gmail.com>wrote:
> Some quick googling didn't lead to anything helpful, so I thought I'd
> ask here. Does anyone know of a compiler flag that will emit a
> warning about the following code? -Wshadow doesn't say anything about
> it...
>
>
> struct A
> {
> int x;
> };
>
>
> struct B : A
> {
> // redeclare a variable that exists in A
> int x;
> };
>
>
> int main()
> {
> B b;
> return 0;
> }
>
>
> --
> John
>
>
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