https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100124
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jakub at gcc dot gnu.org --- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> --- ISO C99 clearly says so: 6.7.2.1/16: "As a special case, the last element of a structure with more than one named member may have an incomplete array type; this is called a flexible array member."