Always catch exception by reference. Removes compiler warning.

dumux/material/constraintsolvers/immiscibleflash.hh

@@ -179,7 +179,7 @@ public:
             deltaX = 0;
 
             try { J.solve(deltaX, b); }
-            catch (Dune::FMatrixError e)
+            catch (Dune::FMatrixError& e)
             {
                 /*
                 std::cout << "error: " << e << "\n";

test/discretization/cellcentered/tpfa/test_tpfafvgeometry_nonconforming.cc

@@ -382,7 +382,7 @@ int main (int argc, char *argv[]) try
 // //////////////////////////////////
 //   Error handler
 // /////////////////////////////////
-catch (Dune::Exception e) {
+catch (Dune::Exception& e) {
 
     std::cout << e << std::endl;
     return 1;

test/discretization/staggered/test_staggeredfvgeometry.cc

@@ -144,7 +144,7 @@ int main (int argc, char *argv[]) try
 // //////////////////////////////////
 //   Error handler
 // /////////////////////////////////
-catch (Dune::Exception e) {
+catch (Dune::Exception& e) {
 
     std::cout << e << std::endl;
     return 1;

test/material/fluidsystems/checkfluidsystem.hh

@@ -526,14 +526,14 @@ int checkFluidSystem()
         try
         {
             val = FluidSystem::density(fs, paramCache, phaseIdx);
-        } catch (Dune::Exception e)
+        } catch (Dune::Exception& e)
         {
             collectedErrors += "error: FluidSystem::density() throws exception!\n";
         }
         try
         {
             val = FluidSystem::molarDensity(fs, paramCache, phaseIdx);
-        } catch (Dune::Exception e)
+        } catch (Dune::Exception& e)
         {
             collectedErrors += "error: FluidSystem::molarDensity() throws exception!\n";
         }
@@ -549,7 +549,7 @@ int checkFluidSystem()
         try
         {
             val = FluidSystem::enthalpy(fs, paramCache, phaseIdx);
-        } catch (Dune::NotImplemented)
+        } catch (Dune::NotImplemented&)
         {
             collectedWarnings += "warning: FluidSystem::enthalpy() is not implemented\n";
         } catch (...)
@@ -594,10 +594,10 @@ int checkFluidSystem()
             try
             {
                 val = FluidSystem::diffusionCoefficient(fs, paramCache, phaseIdx, compIdx);
-            } catch (Dune::NotImplemented)
+            } catch (Dune::NotImplemented&)
             {
                 collectedWarnings += "warning: FluidSystem::diffusionCoefficient() is not implemented\n";
-            } catch (Dune::InvalidStateException)
+            } catch (Dune::InvalidStateException&)
             {
                 collectedWarnings += "warning: FluidSystem::diffusionCoefficient() gives invalid state exception\n";
             } catch (...)

test/multidomain/facet/test_facetcouplingmapper.cc

@@ -311,7 +311,7 @@ int main (int argc, char *argv[]) try
 ////////////////////////////////////
 //  Error handler
 ////////////////////////////////////
-catch (Dune::Exception e) {
+catch (Dune::Exception& e) {
     std::cout << e << std::endl;
     return 1;
 }

test/multidomain/facet/test_facetcouplingmapper_boundary.cc

@@ -133,7 +133,7 @@ int main (int argc, char *argv[]) try
 // //////////////////////////////////
 //   Error handler
 // /////////////////////////////////
-catch (Dune::Exception e) {
+catch (Dune::Exception& e) {
     std::cout << e << std::endl;
     return 1;
 }

test/multidomain/facet/test_gridmanager.cc

@@ -277,7 +277,7 @@ int main (int argc, char *argv[]) try
 // //////////////////////////////////
 //   Error handler
 // /////////////////////////////////
-catch (Dune::Exception e) {
+catch (Dune::Exception& e) {
     std::cout << e << std::endl;
     return 1;
 }

test/multidomain/facet/test_vertexmapper.cc

@@ -170,7 +170,7 @@ int main (int argc, char *argv[]) try
 // //////////////////////////////////
 //   Error handler
 // /////////////////////////////////
-catch (Dune::Exception e)
+catch (Dune::Exception& e)
 {
     std::cout << e << std::endl;
     return 1;