http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51731
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED CC| |jakub at gcc dot gnu.org Resolution| |INVALID --- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-01-02 17:10:17 UTC --- Having a zero-sized array at the end of a struct is surely a commonly used technique, close to standard flexible array members, but that is not what you are doing. Trying to reference data.e[-1] through data.e[-9] is of course not valid C++ (nor C) when e is an array (it might be valid if e was a pointer and pointed into the middle of some array).