------- Comment #3 from redi at gcc dot gnu dot org 2009-11-20 18:49 ------- (In reply to comment #2) > In standard C, a size 0 array is forbidden, at least in C99 doc I have handy,
Yes, but it's a long-standing GNU extension: http://gcc.gnu.org/onlinedocs/gcc-4.4.2/gcc/Zero-Length.html#Zero-Length The C++ front end says: /* As an extension we allow zero-sized arrays. We always allow them in system headers because glibc uses them. */ Maybe the C++ front-end could be made stricter, so that it accepts char b[0] (like the C front end) but not char b[] (which is a C99 flexible array member, and must be the last member) -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42121
