nixpkgs/pkgs/applications/science/physics/xfitter/undefined_behavior.patch

diff --git a/DY/src/finterface.cc b/DY/src/finterface.cc
--- a/DY/src/finterface.cc
+++ b/DY/src/finterface.cc
@@ -14,17 +14,17 @@
 using namespace std;
 
 extern "C" {
-  int dy_create_calc_(const int *ds_id, const int *chg_prod, 
+  void dy_create_calc_(const int *ds_id, const int *chg_prod, 
       const double *beam_en, const char *boz,
       const double *ranges, const char *var_name, 
       const int *n_bins, const double *bin_edges);
 
-  int dy_do_calc_();
+  void dy_do_calc_();
 
-  int dy_get_res_(const int *ds_id, double *calc_res);
+  void dy_get_res_(const int *ds_id, double *calc_res);
 
-  int dy_release_();
-  int dy_set_ewpars_();
+  void dy_release_();
+  void dy_set_ewpars_();
 }
 
 typedef map <int, DYcalc* > DCmap;
@@ -34,7 +34,7 @@ vector<BinMatrix*> gBinMatrices;
 
 // initializes Drell-Yan LO calculations with info on
 // beam, process, kinematic cuts, and bins.
-int dy_create_calc_(const int *ds_id, const int *chg_prod, 
+void dy_create_calc_(const int *ds_id, const int *chg_prod, 
     const double *beam_en, const char *boz,
     const double *ranges, const char *var_name, 
     const int *n_bins, const double *bin_edges)
@@ -99,13 +99,11 @@ int dy_create_calc_(const int *ds_id, const int *chg_prod,
   // create calculator and put to map
   DYcalc * dc = new DYcalc(bm, pc, int_steps);
   gCalcs.insert( pair<int,DYcalc*>( *ds_id,dc ) );
-
-  return 1;
 }
 
 
 // calculate Drell-Yan LO cross sections for all data sets
-int dy_do_calc_()
+void dy_do_calc_()
 {
   // evolve convolutions
   vector<PDFconv*>::iterator ipc = gPDFconvs.begin();
@@ -118,28 +116,24 @@ int dy_do_calc_()
     if ( true != idc->second->Integrate() ) {
       cout << "Something is wrong with DY integration for " 
            << idc->first << " data set." << endl;
-      return 0;
+      return;
     }
   }
-
-  return 1;
 }
 
 
 // return DY calculations for data set ds_name
-int dy_get_res_(const int *ds_id, double *calc_res)
+void dy_get_res_(const int *ds_id, double *calc_res)
 {
   DYcalc * dc = gCalcs.find(*ds_id)->second;
   dc->getCalcRes(calc_res);
-
-  return 1;
 }
 
-int dy_set_ewpars_(){
+void dy_set_ewpars_(){
   PhysPar::setPhysPar();
 }
 
-int dy_release_()
+void dy_release_()
 {
   vector<PDFconv*>::iterator ipc = gPDFconvs.begin();
   for (; ipc!=gPDFconvs.end(); ipc++){
@@ -155,6 +149,4 @@ int dy_release_()
   for (; idc != gCalcs.end() ; idc++){
     delete (idc->second);
   }
-
-  return 1;
 }
diff --git a/DiffDIS/include/DataTable.h b/DiffDIS/include/DataTable.h
--- a/DiffDIS/include/DataTable.h
+++ b/DiffDIS/include/DataTable.h
@@ -307,6 +307,7 @@ class DataTable_t {
       for(ic=0; ic < GetNcols(); ic++) {
         for(ir=0; ir < npt; ir++) Data[ic][ir] = A.Data[ic][ir];
       }
+      return *this;
     }
     
     //@}
diff --git a/FastNLO/src/FastNLOInterface.cc b/FastNLO/src/FastNLOInterface.cc
--- a/FastNLO/src/FastNLOInterface.cc
+++ b/FastNLO/src/FastNLOInterface.cc
@@ -39,14 +39,14 @@ void gauleg(double x1,double x2,double *x,double *w, int n);
 
 
 extern "C" {
-  int fastnloinit_(const char *s, const int *idataset, const char *thfile, int *I_FIT_ORDER, bool *PublicationUnits , double* murdef, double* murscale, double *mufdef, double* mufscale);
-  int fastnlocalc_(const int *idataset, double *xsec);
-  int fastnlocalctop_(const int *idataset, double *xsec, double *thbin, double *tot, int *Npt);
-  int fastnlopointskip_(const int *idataset, int *point, int *npoints);
-  int hf_errlog_(const int* ID, const char* TEXT, long length);
-  int hf_stop_();
+  void fastnloinit_(const char *s, const int *idataset, const char *thfile, int *I_FIT_ORDER, bool *PublicationUnits , double* murdef, double* murscale, double *mufdef, double* mufscale);
+  void fastnlocalc_(const int *idataset, double *xsec);
+  void fastnlocalctop_(const int *idataset, double *xsec, double *thbin, double *tot, int *Npt);
+  void fastnlopointskip_(const int *idataset, int *point, int *npoints);
+  void hf_errlog_(const int* ID, const char* TEXT, long length);
+  void hf_stop_();
   double interp_(double *A, double *xx1, double *x, int *NGrid1, double *res);
-  int setfastnlotoppar_(const int *idataset);
+  void setfastnlotoppar_(const int *idataset);
 }
 
 
@@ -58,7 +58,7 @@ map<int, FastNLOxFitter*> gFastNLO_array;
 map<int, BoolArray*>     gUsedPoints_array;
 int CreateUsedPointsArray(int idataset, int npoints);
 
-int fastnloinit_(const char *s, const int *idataset, const char *thfile, int *I_FIT_ORDER, bool *PublicationUnits , double* murdef, double* murscale, double *mufdef, double* mufscale) {
+void fastnloinit_(const char *s, const int *idataset, const char *thfile, int *I_FIT_ORDER, bool *PublicationUnits , double* murdef, double* murscale, double *mufdef, double* mufscale) {
 
   
    map<int, FastNLOxFitter*>::const_iterator FastNLOIterator = gFastNLO_array.find(*idataset);
@@ -67,7 +67,7 @@ int fastnloinit_(const char *s, const int *idataset, const char *thfile, int *I_
      const char* text = "I: Double initialization of the same fastnlo data set!";
      hf_errlog_(&id, text, (long)strlen(text));
      //hf_stop_();
-     return 1;
+     return;
    }
    
    FastNLOxFitter* fnloreader = new FastNLOxFitter( thfile );  
@@ -112,10 +112,9 @@ int fastnloinit_(const char *s, const int *idataset, const char *thfile, int *I_
    }
    
    gFastNLO_array.insert(pair<int, FastNLOxFitter*>(*idataset, fnloreader) );
-   return 0;
 }
 
-int setfastnlotoppar_(const int *idataset) {
+void setfastnlotoppar_(const int *idataset) {
    //!< Dedicated settings for difftop
    map<int, FastNLOxFitter*>::const_iterator FastNLOIterator = gFastNLO_array.find(*idataset);
    map<int, BoolArray*>::const_iterator UsedPointsIterator = gUsedPoints_array.find(*idataset);
@@ -130,11 +129,9 @@ int setfastnlotoppar_(const int *idataset) {
    fnloreader->SetExternalFuncForMuF( &Function_Mu );
    fnloreader->SetExternalFuncForMuR( &Function_Mu);
    //fnloreader->SetScaleFactorsMuRMuF(1.0,1.0); //Be reminded that muR and muF scales are hard coded (that's not true!)
-
-   return 0;
 }
 
-int fastnlocalc_(const int *idataset, double *xsec) {
+void fastnlocalc_(const int *idataset, double *xsec) {
   
    map<int, FastNLOxFitter*>::const_iterator FastNLOIterator = gFastNLO_array.find(*idataset);
    map<int, BoolArray*>::const_iterator UsedPointsIterator = gUsedPoints_array.find(*idataset);
@@ -176,13 +173,10 @@ int fastnlocalc_(const int *idataset, double *xsec) {
        outputidx++;
      }
    }
- 
-
-   return 0;
 }
 
 //MK14 New function for Difftop calculation: it is called in trunk/src/difftop_fastnlo.f
-int fastnlocalctop_(const int *idataset, double *xsec, double *thbin, double *tot, int *Npt){
+void fastnlocalctop_(const int *idataset, double *xsec, double *thbin, double *tot, int *Npt){
   
    map<int, FastNLOxFitter*>::const_iterator FastNLOIterator = gFastNLO_array.find(*idataset);
    map<int, BoolArray*>::const_iterator UsedPointsIterator = gUsedPoints_array.find(*idataset);
@@ -262,10 +256,6 @@ int fastnlocalctop_(const int *idataset, double *xsec, double *thbin, double *to
      Total += interpC(xsec,xg[k],thbin,Nthpoints)*wg[k];
 
    *tot = Total;
-
-
-
-   return 0;
 }
 
 
@@ -277,7 +267,7 @@ int fastnlocalctop_(const int *idataset, double *xsec, double *thbin, double *to
 
 
 
-int fastnlopointskip_(const int *idataset, int *point, int *npoints) {
+void fastnlopointskip_(const int *idataset, int *point, int *npoints) {
   map<int, BoolArray*>::const_iterator UsedPointsIterator = gUsedPoints_array.find(*idataset);
   if(UsedPointsIterator == gUsedPoints_array.end( )) 
     CreateUsedPointsArray(*idataset, *npoints);
@@ -292,8 +282,6 @@ int fastnlopointskip_(const int *idataset, int *point, int *npoints) {
   
   BoolArray*     usedpoints = UsedPointsIterator->second;
   usedpoints->at(*point-1) = false;
-
-  return 0;
 }
 
 int CreateUsedPointsArray(int idataset, int npoints) {
diff --git a/Hathor/src/HathorInterface.cc b/Hathor/src/HathorInterface.cc
--- a/Hathor/src/HathorInterface.cc
+++ b/Hathor/src/HathorInterface.cc
@@ -6,9 +6,9 @@
 #include "../interface/xFitterPdf.h"
 
 extern "C" {
-  int hathorinit_(const int* idataset, const double& sqrtS, const bool& ppbar, const double& mt,
+  void hathorinit_(const int* idataset, const double& sqrtS, const bool& ppbar, const double& mt,
 		  const unsigned int& pertubOrder, const unsigned int& precisionLevel);
-  int hathorcalc_(const int *idataset, double *xsec);
+  void hathorcalc_(const int *idataset, double *xsec);
 }
 
 extern "C" {
@@ -19,7 +19,7 @@ extern "C" {
 }
 
 extern "C" {
-  int hf_errlog_(const int* ID, const char* TEXT, long length);
+  void hf_errlog_(const int* ID, const char* TEXT, long length);
 }
 
 // FIXME: delete pointers at the end! (in some hathordestroy_ or so)
@@ -28,7 +28,7 @@ xFitterPdf* pdf;
 int* rndStore;
 double mtop;
 
-int hathorinit_(const int* idataset, const double& sqrtS, const bool& ppbar, const double& mt,
+void hathorinit_(const int* idataset, const double& sqrtS, const bool& ppbar, const double& mt,
 		const unsigned int& pertubOrder, const unsigned int& precisionLevel) {
 
   if(hathor_array.size()==0) {
@@ -69,7 +69,7 @@ int hathorinit_(const int* idataset, const double& sqrtS, const bool& ppbar, con
   return 0;
 }
 
-int hathorcalc_(const int *idataset, double *xsec) {
+void hathorcalc_(const int *idataset, double *xsec) {
   rlxd_reset(rndStore);
 
   std::map<int, Hathor*>::const_iterator hathorIter = hathor_array.find(*idataset);
diff --git a/src/TheorEval.cc b/src/TheorEval.cc
--- a/src/TheorEval.cc
+++ b/src/TheorEval.cc
@@ -62,6 +62,7 @@ TheorEval::initTheory()
   list<tToken> sl;
   this->assignTokens(sl);
   this->convertToRPN(sl);
+  return 0;
 }
 
 int 
@@ -167,6 +168,7 @@ TheorEval::assignTokens(list<tToken> &sl)
       sl.push_back(t);
     }
   }
+  return 0;
 }
 
 int
@@ -217,6 +219,7 @@ TheorEval::convertToRPN(list<tToken> &sl)
   cout << endl;
   */
   
+  return 0;
 }
 
 int
@@ -236,6 +239,7 @@ TheorEval::initTerm(int iterm, valarray<double> *val)
     hf_errlog_(id, text, textlen);
     return -1;
   }
+  return 0;
 }
 
 int
@@ -348,6 +352,7 @@ TheorEval::initGridTerm(int iterm, valarray<double> *val)
 
   // associate grid and valarray pointers in token
   _mapGridToken[g] = val;
+  return 0;
 }
 
 int
@@ -430,6 +435,7 @@ TheorEval::initKfTerm(int iterm, valarray<double> *val)
 
   // write k-factor array to the token valarray
   *val = valarray<double>(vkf.data(), vkf.size());
+  return 0;
 }  
 
 int
@@ -465,6 +471,7 @@ TheorEval::setCKM(const vector<double> &v_ckm)
    int textlen = strlen(text);
    hf_errlog_(id, text, textlen);
 #endif
+   return 0;
 }
 
 int
@@ -531,6 +538,7 @@ TheorEval::Evaluate(valarray<double> &vte )
       }
     //vte /= _units;
   }
+  return 0;
 }
 
 int
@@ -555,6 +563,7 @@ TheorEval::getGridValues()
     
     
   }
+  return 0;
 }
 
 int
diff --git a/src/ftheor_eval.cc b/src/ftheor_eval.cc
--- a/src/ftheor_eval.cc
+++ b/src/ftheor_eval.cc
@@ -19,15 +19,15 @@
 using namespace std;
 
 extern "C" {
-  int set_theor_eval_(int *dsId);//, int *nTerms, char **TermName, char **TermType, 
+  void set_theor_eval_(int *dsId);//, int *nTerms, char **TermName, char **TermType, 
 //    char **TermSource, char *TermExpr);
-  int set_theor_bins_(int *dsId, int *nBinDimension, int *nPoints, int *binFlags, 
+  void set_theor_bins_(int *dsId, int *nBinDimension, int *nPoints, int *binFlags, 
     double *allBins);
 //  int set_theor_units_(int *dsId, double *units);
-  int init_theor_eval_(int *dsId);
-  int update_theor_ckm_();
-  int get_theor_eval_(int *dsId, int* np, int* idx);
-  int close_theor_eval_();
+  void init_theor_eval_(int *dsId);
+  void update_theor_ckm_();
+  void get_theor_eval_(int *dsId, int* np, int* idx);
+  void close_theor_eval_();
 }
 
 /// global dataset to theory evaluation pointer map
@@ -59,7 +59,7 @@ extern struct ord_scales {
  dataset ID.
  write details on argumets
  */
-int set_theor_eval_(int *dsId)//, int *nTerms, char **TermName, char **TermType, 
+void set_theor_eval_(int *dsId)//, int *nTerms, char **TermName, char **TermType, 
 //  char **TermSource, char *TermExpr)
 {
   // convert fortran strings to c++
@@ -90,15 +90,13 @@ int set_theor_eval_(int *dsId)//, int *nTerms, char **TermName, char **TermType,
     << " already exists." << endl;
     exit(1); // make proper exit later
   }
-
-  return 1;
 }
 
 /*!
  Sets datasets bins in theory evaluations.
  write details on argumets
  */
-int set_theor_bins_(int *dsId, int *nBinDimension, int *nPoints, int *binFlags, 
+void set_theor_bins_(int *dsId, int *nBinDimension, int *nPoints, int *binFlags, 
   double *allBins)
 {
   tTEmap::iterator it = gTEmap.find(*dsId);
@@ -110,7 +108,6 @@ int set_theor_bins_(int *dsId, int *nBinDimension, int *nPoints, int *binFlags,
   
   TheorEval *te = gTEmap.at(*dsId);
   te->setBins(*nBinDimension, *nPoints, binFlags, allBins);
-  return 1;
 }
 
 /*
@@ -132,7 +129,7 @@ int set_theor_units_(int *dsId, double *units)
 /*!
  Initializes theory for requested dataset.
  */
-int init_theor_eval_(int *dsId)
+void init_theor_eval_(int *dsId)
 {
   tTEmap::iterator it = gTEmap.find(*dsId);
   if (it == gTEmap.end() ) { 
@@ -148,7 +145,7 @@ int init_theor_eval_(int *dsId)
 /*!
  Updates the CKM matrix to all the initialized appl grids
  */
-int update_theor_ckm_()
+void update_theor_ckm_()
 {
   double a_ckm[] = { ckm_matrix_.Vud, ckm_matrix_.Vus, ckm_matrix_.Vub,
                                   ckm_matrix_.Vcd, ckm_matrix_.Vcs, ckm_matrix_.Vcb,
@@ -164,7 +161,7 @@ int update_theor_ckm_()
 /*!
  Evaluates theory for requested dataset and writes it to the global THEO array.
  */
-int get_theor_eval_(int *dsId, int *np, int*idx)
+void get_theor_eval_(int *dsId, int *np, int*idx)
 {
 
   tTEmap::iterator it = gTEmap.find(*dsId);
@@ -194,11 +191,11 @@ int get_theor_eval_(int *dsId, int *np, int*idx)
   // write the predictions to THEO array
   if( ip != *np ){
     cout << "ERROR in get_theor_eval_: number of points mismatch" << endl;
-    return -1;
+    return;
   }
 }
 
-int close_theor_eval_()
+void close_theor_eval_()
 {
   tTEmap::iterator it = gTEmap.begin();
   for (; it!= gTEmap.end(); it++){
diff --git a/src/lhapdf6_output.c b/src/lhapdf6_output.c
--- a/src/lhapdf6_output.c
+++ b/src/lhapdf6_output.c
@@ -64,7 +64,7 @@ extern double bvalij_(int *,int *,int *,int *,int *);
 extern double bvalxq_(int *,int *,double *,double *,int *);
 extern double hf_get_alphas_(double *);
 extern int getord_(int *);
-extern int grpars_(int *, double *, double *, int *, double *, double *, int *);
+extern void grpars_(int *, double *, double *, int *, double *, double *, int *);
 extern int getcbt_(int *, double *, double *, double *);
 extern void getpdfunctype_heraf_(int *mc, int *asymh, int *symh, char *name, size_t size);
 extern void hf_errlog_(int *, char *, size_t);
diff --git a/tools/draw/include/FileOpener.h b/tools/draw/include/FileOpener.h
--- a/tools/draw/include/FileOpener.h
+++ b/tools/draw/include/FileOpener.h
@@ -61,7 +61,7 @@ class InFileOpener_t {
   string GetPath() const {return ind < 0 ? "" : Flist[ind];}
   
   // ==================================
-  int Add(const string& fname) {
+  void Add(const string& fname) {
     Flist.push_back(fname);
   }