https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117832
Iain Buclaw <ibuclaw at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |ibuclaw at gcc dot gnu.org --- Comment #1 from Iain Buclaw <ibuclaw at gcc dot gnu.org> --- Yes, all padding in all objects should be zero at all times. Currently, this is done by a memset before initializing new objects. There are some cases where the optimizer for some targets discard the memset as a redundant double assignment, then leaves the alignment hole as uninitialized (pr96153).