philnik777 wrote:
I'd personally be fine with deprecating it. As I said above, we use it in
libc++ for padding inside `string` like
```c++
struct short_string {
<some data>;
char padding[sizeof(value_type) - 1];
<more data>;
};
```
That could be refactored relatively easily as
```c++
template <size_t Size>
struct padding_t {
char data[Size];
};
template <>
struct padding_t<0> {};
struct short_string {
<some data>;
[[no_unique_address]] padding_t<sizeof(value_type) - 1> padding;
<more data>;
};
```
so I don't think that's a use-case worth keeping the extension for.
https://github.com/llvm/llvm-project/pull/86652
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