Get around a GCC 6 warning.

GCC 6.1 now warns (-Waddress) that (since the dynamic cast of an object
back to its own type always succeeds) the address of an object is always
nonzero, so these casts result in tautologies for valid vector types.

diff --git a/include/deal.II/numerics/vector_tools.templates.h b/include/deal.II/numerics/vector_tools.templates.h
index e6889a36b415401d333bc4168cf0070d087ee451..e1af4962ca8f224013b887cbb3c58101bbb3862a 100644 (file)
--- a/include/deal.II/numerics/vector_tools.templates.h
+++ b/include/deal.II/numerics/vector_tools.templates.h
@@ -6972,15 +6972,8 @@ namespace VectorTools
       }
     else
       {
-        // This function is not implemented for distributed vectors, so
-        // if v is not a boring Vector or BlockVector:
-        Assert(   dynamic_cast<Vector<double> *>(& v)
-                  || dynamic_cast<Vector<float> *>(& v)
-                  || dynamic_cast<Vector<long double> *>(& v)
-                  || dynamic_cast<BlockVector<double> *>(& v)
-                  || dynamic_cast<BlockVector<float> *>(& v)
-                  || dynamic_cast<BlockVector<long double> *>(& v),
-                  ExcNotImplemented());
+        // This function is not implemented for distributed vectors.
+        Assert(!v.supports_distributed_data, ExcNotImplemented());
 
         const unsigned int n = v.size();