[Dune] [#454] cast from GenericIterator to const GenericIterator broken

[Dune]

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User who did this - Martin Nolte (nolte) 

Attached to Project - Dune
Summary - cast from GenericIterator to const GenericIterator broken
Task Type - Bug Report
Category - Common
Status - New
Assigned To - 
Operating System - Unspecified / All
Severity - Medium
Priority - Normal
Reported Version - SVN
Due in Version - 1.2
Due Date - Undecided
Details - Adding a template parameter for the reference in revision 5345 broke the implicit cast from a GenericIterator to a const GenericIterator.

The problem is that GenericIterator< const C, const T > sets R=const T& while the mutable iterator GenericIterator< C, T > sets R=T& and uses this R in the copy constructors (and in equals, distanceTo).

See iteratorfacestest for details (yes, it fails).

PS: Why does distanceTo copy the iterator instead of taking a const reference?

More information can be found at the following URL:
http://www.dune-project.org/flyspray/index.php?do=details&task_id=454

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