Compiler crashes on clause with value pattern and guard

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Procedure to Repeat:
def g(0, x) if (true) = x
def g(x, y) = x+1 #
g(0)

OR

def g(0) if (true) = 0
def g(x) = x+1 #
g(0)

will crash the compiler with an assertion (caused by a reference to a variable 
not in the context). However if you remove the guard they work fine.

Version and Platform:
r3117 inside eclipse on linux and Try Orc.

I believe this problem is caused by a generated variable being referenced 
without binding. 

Original issue reported on code.google.com by arthur.peters on 4 Dec 2012 at 9:51

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Original comment by arthur.peters on 4 Dec 2012 at 10:04

• Removed labels: Usability

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Fixed in r3133. This was an operator precedence mistake caused by the 
difference between the Orc and Scala DSL operator precedence.

Original comment by arthur.peters on 11 Dec 2012 at 12:06

• Changed state: Fixed