_new_StringGroup
cpl->sg = _new_StringGroup(MAX_PATHLEN_FALLBACK);
cpl->sg = _new_StringGroup(_pu_pathname_dim());
ef->sg = _new_StringGroup(_pu_pathname_dim());
gl->capmem = _new_StringGroup(CAPMEM_SEGMENT_SIZE);
cm->sg = _new_StringGroup(_pu_pathname_dim());
StringGroup *_new_StringGroup(int segment_size);