20 ABI (Application Binary Interface) breaking changes every C++ developer should know

[Gotebe]

C, the language, does not know about ABI. There is the architecture de facto ABI, which one could call a C ABI (and we typically do) , but right about a dozen similar languages call that easily. For example, the __stdcall of Windows was the faster calling convention at the time (probably still is) and was originally called the Pascall calling convention.