better eof handling in CellId

git-svn-id: https://svn.dealii.org/trunk@29873 0785d39b-7218-0410-832d-ea1e28bc413d

diff --git a/deal.II/include/deal.II/grid/cell_id.h b/deal.II/include/deal.II/grid/cell_id.h
index 5dee60740f1da749d672d2308b286d417da0b1e0..16192ca3f418ab71e6c155e0640c006ec5482364 100644 (file)
--- a/deal.II/include/deal.II/grid/cell_id.h
+++ b/deal.II/include/deal.II/grid/cell_id.h
@@ -77,7 +77,12 @@ inline std::ostream& operator<< (std::ostream& os, const CellId& cid)
  */
 inline std::istream& operator>> (std::istream& is, CellId& cid)
 {
-  is >> cid.coarse_cell_id;
+  unsigned int cellid;
+  is >> cellid;
+  if (is.eof())
+    return is;
+
+  cid.coarse_cell_id = cellid;
   char dummy;
   is >> dummy;
   Assert(dummy=='_', ExcMessage("invalid CellId"));