[Bug libstdc++/103295] constexpr std::string does not work for clang

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103295

--- Comment #12 from Jonathan Wakely <redi at gcc dot gnu.org> ---
But even with those problems fixed, Clang fails for anything that doesn't fit
in the SSO buffer, as shown by this:

#include <memory>

constexpr char test()
{
  char* p = std::allocator<char>().allocate(2);

  p[0] = 'a';
  char c = *p;
  std::allocator<char>().deallocate(p, 2);
  return c;
}

static_assert( test() == 'a' );