On Thu, 11 May 2023, Kees Cook via Gcc wrote: > Why are zero-sized objects missing in Standard C? Or, perhaps, the better > question is: what's needed to support the idea of a zero-sized object?
Zero-sized objects break the principle that different objects have different addresses, and the principle of being able to subtract pointers to different elements of an array. There would also be serious C++ compatibility concerns, since C++ allows a struct with no members but it has nonzero size, unlike the GNU C extension where a struct with no members has size zero. -- Joseph S. Myers jos...@codesourcery.com
