Add basic support for signals

[r2c2.git] / source / libr2c2 / train.cpp

diff --git a/source/libr2c2/train.cpp b/source/libr2c2/train.cpp
index f43969d1949b0729eed8ba9132fb1bb37125d23f..ab52ce6ad081bd31eb2b6cd919cc7b9c4e744994 100644 (file)
--- a/source/libr2c2/train.cpp
+++ b/source/libr2c2/train.cpp
@@ -542,7 +542,7 @@ void Train::free_noncritical_blocks()
        }
 }
 
-int Train::get_entry_to_block(Block &block) const
+int Train::get_entry_to_block(const Block &block) const
 {
        for(BlockList::const_iterator i=blocks.begin(); i!=blocks.end(); ++i)
                if(i->block()==&block)