Assertion failed: Failed to find the # of uses of var: $0

[axiomsofchoice]

I was compiling the cubescript example directly via the command line and encountered this:

Assertion failed: Failed to find the # of uses of var: $0
Stack: Error
at assertTrue (utility.js:60:23)
at analyzer.js:271:13
at Array.forEach (native)
at analyzer.js:260:20
at Array.forEach (native)
at Object.processItem (analyzer.js:238:22)
at Object.process (framework.js:155:26)
at framework.js:104:25
at Array.forEach (native)
at Object.solve (framework.js:92:27)
utility.js:61: Assertion failed: Failed to find the # of uses of var: $0
throw msg;
^

[kripken]

Can you attach the .ll file that was generated? And, what OS are you on?

[axiomsofchoice]

Yes, sure. The box I'm runing on is:

Linux maclane 2.6.32-21-server #32-Ubuntu SMP Fri Apr 16 09:17:34 UTC 2010 x86_64 GNU/Linux

I've uploaded the .ll file here:

https://gist.github.com/1008855

[kripken]

Thanks, and what specific command did you run to compile it?

[axiomsofchoice]

According to my bash history:

llvm-gcc -O3 --emit-llvm command.cpp -c -o command
llvm-dis command

Please note that the -show-annotations flag doesn't appear to work with my version of llvm-dis as it gives the following error:

llvm-dis: Unknown command line argument '-show-annotations'. Try: 'llvm-dis -help'

The version I'm using is the following:

$ llvm-dis --version
Low Level Virtual Machine (http://llvm.org/):
llvm version 2.7 ( 2.7-0ubuntu1)
Optimized build.
Built Apr 28 2010 (14:19:53).
Host: x86_64-pc-linux-gnu
Host CPU: core2

Registered Targets:
(none)

[axiomsofchoice]

Just spotted what might be going on: the version of llvm I've been using is 2.7 and not the 2.9 version required here: https://github.com/kripken/emscripten/wiki/Getting-started

[kripken]

Ah yeah, I should have asked about the LLVM version. That is probably the cause.