[Bug libstdc++/109203] sort(zip(v1, v2)) fails to compile

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109203

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Note for this to work with LLVM's libc++, you need the following include file
added:
#include <string>