https://bugs.llvm.org/show_bug.cgi?id=25084
David Stone <da...@doublewise.net> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Resolution|INVALID |---
--- Comment #2 from David Stone <da...@doublewise.net> ---
Sorry, I had incorrectly reduced this bug when I initially posted this. Here is
the correct test case:
#include <type_traits>
namespace {
struct default_constructible {
default_constructible() = default;
default_constructible(default_constructible const &) = delete;
default_constructible(default_constructible &&) = delete;
};
} // namespace
static_assert(std::is_default_constructible_v<default_constructible>);
https://godbolt.org/z/kieneu
We need to explicitly default the default constructor because we delete another
special member function. The code does not compile without the `= default`
line. However, it is used only at compile time, and thus the function does not
need to be emitted for use at link-time, which is presumably why this warning
is being triggered.
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