With this patch make test produces:

# of expected passes            80
> # of unexpected failures        6
> # of expected failures          1
> FAIL: /home/arr/projects/klee/test/Expr/Parser/ConstantFolding.pc
> FAIL: /home/arr/projects/klee/test/Expr/Parser/Exprs.pc
> XFAIL: /home/arr/projects/klee/test/Expr/Evaluate2.pc
> FAIL: /home/arr/projects/klee/test/Feature/AsmAddresses.c
> FAIL: /home/arr/projects/klee/test/Feature/ExprLogging.c
> FAIL: /home/arr/projects/klee/test/Programs/pcregrep.c
> FAIL: /home/arr/projects/klee/test/Solver/FastCexSolver.pc


Most of these are kleaver failures with following error message:

> error: type widths do not match in binary expression
>

And Programs/pcregrep.c is failing due to some memory error. I'm running
these tests on Ubuntu in VirtualBox, so maybe it's due to insufficient
memory or something.

At this point, i doubt that i can finish porting KLEE to LLVM trunk alone. I
have almost none experience with LLVM and haven't any with KLEE itself. But
if anyone can point me where to dig kleaver issue, i can spend some more
time on this.
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