https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86505
--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> --- (In reply to rpirrera from comment #9) > The patch cannot be applied to the compiler we are using (GCC 5), we get a > function not defined error. > Is it possible to have a patch for GCC 5 too? > > Thank you. you should be able to replace + tree newlhs = create_tmp_reg_or_ssa_name (integer_type_node); with inlining the implementation that is in newer GCC: tree create_tmp_reg_or_ssa_name (tree type, gimple *stmt) { if (gimple_in_ssa_p (cfun)) return make_ssa_name (type, stmt); else return create_tmp_reg (type); } Note that GCC 5 is out of support.