http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46677
--- Comment #10 from Jorn Wolfgang Rennecke <amylaar at gcc dot gnu.org> 2010-11-29 02:53:27 UTC --- (In reply to comment #3) > * POINTER_SIZE and ADA_LONG_TYPE_SIZE I haven't looked at in detail - We have several possible substitutes for POINTER_SIZE: GET_MODE_BITSIZE (ptr_mode) TYPE_PRECISION (ptr_type_mode) GET_MODE_BITSIZE (targetm.addr_space.pointer_mode (ADDR_SPACE_GENERIC)) Using machine modes is undesirable in files that don't already need to know about modes. TYPE_PRECISION (ptr_type_mode) seems reasonable for frontends after this node has been initialized; however, AFAICT, this node is not set for java. All the substitutes suffer from initialization problems when used before backend initialization. With targetm.addr_space.pointer_mode this might eventually be fixed by changing the hook definitions. Therefore, I propose that targhooks.c provides a wrapper function for GET_MODE_BITSIZE (targetm.addr_space.pointer_mode (ADDR_SPACE_GENERIC)) . In can work around the intialization problems for now by checking for VOIDmode, and using POINTER_SIZE when that happens.
