[Bug libstdc++/87502] Poor code generation for std::string("c-style string")

[glisse at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87502

--- Comment #3 from Marc Glisse <glisse at gcc dot gnu.org> ---
(In reply to M Welinder from comment #2)
> The destruction still stinks: the full destructor is inlined instead of
> the small-string-only version (i.e., a no-op).  Evidently gcc cannot
> see that the string remains a small-string.

void foo (const std::string &s){
  const_cast<std::string&>(s)="some longer string so it needs proper deletion";
}