creating numpy array of NaN crashes compiler

[sbourdeauducq]

import numpy as np
from artiq.experiment import *


class FX(EnvExperiment):
    def build(self):
        self.setattr_device("core")

    @kernel
    def run(self):
        np.full(3, np.nan)

$ artiq_compile.py fx.py 
<function make_array>
Traceback (most recent call last):
  File "/home/sb/artiq/artiq/frontend/artiq_compile.py", line 76, in <module>
    main()
  File "/home/sb/artiq/artiq/frontend/artiq_compile.py", line 58, in main
    attribute_writeback=False, print_as_rpc=False)
  File "/home/sb/artiq/artiq/coredevice/core.py", line 106, in compile
    library = target.compile_and_link([module])
  File "/home/sb/artiq/artiq/compiler/targets.py", line 187, in compile_and_link
    return self.link([self.assemble(self.compile(module)) for module in modules])
  File "/home/sb/artiq/artiq/compiler/targets.py", line 187, in <listcomp>
    return self.link([self.assemble(self.compile(module)) for module in modules])
  File "/home/sb/artiq/artiq/compiler/targets.py", line 141, in compile
    llmod = module.build_llvm_ir(self)
  File "/home/sb/artiq/artiq/compiler/module.py", line 93, in build_llvm_ir
    attribute_writeback=self.attribute_writeback)
  File "/home/sb/artiq/artiq/compiler/transforms/llvm_ir_generator.py", line 492, in process
    self.process_function(func)
  File "/home/sb/artiq/artiq/compiler/transforms/llvm_ir_generator.py", line 654, in process_function
    llinsn = getattr(self, "process_" + type(insn).__name__)(insn)
  File "/home/sb/artiq/artiq/compiler/transforms/llvm_ir_generator.py", line 1575, in process_Quote
    return self._quote(insn.value, insn.type, lambda: [repr(insn.value)])
  File "/home/sb/artiq/artiq/compiler/transforms/llvm_ir_generator.py", line 1510, in _quote
    return _quote_attributes()
  File "/home/sb/artiq/artiq/compiler/transforms/llvm_ir_generator.py", line 1490, in _quote_attributes
    lambda: path() + [attr])
  File "/home/sb/artiq/artiq/compiler/transforms/llvm_ir_generator.py", line 1571, in _quote
    assert False, fail_msg
AssertionError: at <module 'numpy' from '/home/sb/miniconda3/envs/py35/lib/python3.5/site-packages/numpy/__init__.py'>.full