https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65370
Bug ID: 65370 Summary: [5 Regression] rejects valid code on powerpc64le-linux-gnu Product: gcc Version: 5.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: doko at gcc dot gnu.org Created attachment 34999 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34999&action=edit preprocessed source from ppl-1.1, r221254 on powerpc64le-linux-gnu. works on all other architectures, and with 4.9: $ g++ -c C_Polyhedron.ii In file included from algorithms.hh:28:0, from C_Polyhedron.cc:28: Pointset_Powerset_defs.hh:1402:37: error: redeclaration of 'template<class QH> Parma_Polyhedra_Library::Pointset_Powerset<PSET>::Pointset_Powerset(const Parma_Polyhedra_Library::Pointset_Powerset<QH>&, Parma_Polyhedra_Library::Complexity_Class) [with QH = QH; PSET = Parma_Polyhedra_Library::NNC_Polyhedron]' may not have default arguments [-fpermissive]