Bug with redstone dust and anvil.

Please attach the crash report ([minecraft|http://hopper.minecraft.net/help/finding-minecraft-data-folder]/crash-reports/crash-<DATE>-client.txt), otherwise we can not diagnose this issue.
For technical support please use the Mojang Support Center.

-- I am a bot. This action was performed automagically!

What is the bug here ?
What's the expected result?

I belive (tho have no idea) think that he's trying to say that anvils are able to replace redstone, instead of placing the anvil ontop or to the side of the dust.
(havn't tested)

@unknown, yes, thanks. See the duplicated ticket MC-1511