https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99018
--- Comment #2 from David Stone <david at doublewise dot net> ---
Simpler test case
```
struct s {
constexpr ~s() {
}
};
constexpr bool f(s const (&)[1]) {
return true;
}
static_assert(f({s()}));
```
Message
```
<source>:10:16: error: non-constant condition for static assertion
10 | static_assert(f({s()}));
| ~^~~~~~~
<source>:10:22: error: '(((const s*)(&<anonymous>)) != 0)' is not a constant
expression
10 | static_assert(f({s()}));
| ^
Compiler returned: 1
```
See it live: https://godbolt.org/z/YGYjfh
You can get the same error by making the function parameter
`std::initializer_list<s>` as well. Especially interesting in this reduction is
that the code complains about a comparison, but there is no comparison anywhere
in the code.
