There's the widely used Itanium C++ ABI [0], which contrary to the name is actually the one used on x86-64. Without a standard ABI it wouldn't be possible to dy

There's the widely used Itanium C++ ABI [0], which contrary to the name is actually the one used on x86-64. Without a standard ABI it wouldn't be possible to dynamically link C++ libraries (which includes the standard library!), especially if they weren't compiled with identical compiler versions. [0]: https://itanium-cxx-abi.github.io/cxx-abi/abi.html https://itanium-cxx-abi.github.io/cxx-abi/abi.html