https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66661
--- Comment #9 from Pádraig Brady <P at draigBrady dot com> --- I'm not understanding completely TBH. Are flexible array members not special? Should the optimizations be restricted on access through the flexible array, because I presume most/all existing allocation code is not considering this alignment/padding issue. I certainly didn't notice any examples when looking into a workaround which I came up with independently. For my reference there are some notes RE GCC's divergence from C99 re padding and flexi arrays at: https://sites.google.com/site/embeddedmonologue/home/c-programming/data-alig