https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63247
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Created attachment 33581 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33581&action=edit gcc5-pr63247.patch Untested fix. I believe it is only this particular case (OMP_CLAUSE_MAP_POINTER for array with non-zero bias) that needs fixing, for zero base array bias we emit mapping for the decl just with perhaps shortened length, and for non-array pointer assign the decl should be a pointer already. Thanks for reporting this.