Four layer reflectivity model not working

[smk78]

Not sure if this issue should go here or against sasmodels?

Running 5.0.5 release on W10/x64.

In SasView/sasview#1498 (comment) @Butler commented:

I think there used to be (... a reflectivity slab model) as part of the very early suite of models though I think they have been removed.

Coincidentally, recently attempting to use the four layer neutron reflectivity model (http://marketplace.sasview.org/models/89/) from the Marketplace, the FitPage populates with the model but Compute generates a very ugly error and nothing happens:

10:33:40 - INFO:  --- SasView session started, version 5.0.5, 2022 ---
10:33:40 - INFO: Python: 3.8.10 (tags/v3.8.10:3d8993a, May  3 2021, 11:48:03) [MSC v.1928 64 bit (AMD64)]
10:34:22 - INFO: C:\SasView-5.0.5\tinycc-data\tcc.exe -shared -rdynamic -Wall C:\Users\zzzzz\AppData\Local\Temp\sas64_multi_reflec_212DEEA3_794x270i.c -o C:\Users\zzzzz\.sasview\compiled_models\sas64_multi_reflec_212DEEA3.so
10:34:25 - INFO: C:\SasView-5.0.5\tinycc-data\tcc.exe -shared -rdynamic -Wall C:\Users\zzzzz\AppData\Local\Temp\sas64_multi_reflec_212DEEA3_f7ou8t8w.c -o C:\Users\zzzzz\.sasview\compiled_models\sas64_multi_reflec_212DEEA3.so
10:34:25 - ERROR: Traceback (most recent call last):
  File "sasmodels\kerneldll.py", line 198, in compile_model
    subprocess.check_output(command, shell=shell, stderr=subprocess.STDOUT)
  File "subprocess.py", line 415, in check_output
  File "subprocess.py", line 516, in run
subprocess.CalledProcessError: Command '['C:\\SasView-5.0.5\\tinycc-data\\tcc.exe', '-shared', '-rdynamic', '-Wall', 'C:\\Users\\zzzzz\\AppData\\Local\\Temp\\sas64_multi_reflec_212DEEA3_794x270i.c', '-o', 'C:\\Users\\zzzzz\\.sasview\\compiled_models\\sas64_multi_reflec_212DEEA3.so']' returned non-zero exit status 1.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "sas\sascalc\data_util\calcthread.py", line 269, in _run
  File "sas\qtgui\Perspectives\Fitting\ModelThread.py", line 203, in compute
  File "sasmodels\sasview_model.py", line 713, in calculate_Iq
    return self._calculate_Iq(qx, qy)
  File "sasmodels\sasview_model.py", line 721, in _calculate_Iq
    self.__class__._model = core.build_model(self._model_info)
  File "sasmodels\core.py", line 339, in build_model
    return kerneldll.load_dll(source['dll'], model_info, numpy_dtype)
  File "sasmodels\kerneldll.py", line 301, in load_dll
    filename = make_dll(source, model_info, dtype=dtype)
  File "sasmodels\kerneldll.py", line 278, in make_dll
    compile_model(source=filename, output=dll)
  File "sasmodels\kerneldll.py", line 201, in compile_model
    raise RuntimeError("compile failed.\n%s\n%s"%(command_str, output))
RuntimeError: compile failed.
C:\SasView-5.0.5\tinycc-data\tcc.exe -shared -rdynamic -Wall C:\Users\zzzzz\AppData\Local\Temp\sas64_multi_reflec_212DEEA3_794x270i.c -o C:\Users\zzzzz\.sasview\compiled_models\sas64_multi_reflec_212DEEA3.so
C:/Users/zzzzz/.sasview/plugin_models/multi_reflec.c:10: error: ';' expected (got "cfloat")
10:34:25 - ERROR: Traceback (most recent call last):
  File "sasmodels\kerneldll.py", line 198, in compile_model
    subprocess.check_output(command, shell=shell, stderr=subprocess.STDOUT)
  File "subprocess.py", line 415, in check_output
  File "subprocess.py", line 516, in run
subprocess.CalledProcessError: Command '['C:\\SasView-5.0.5\\tinycc-data\\tcc.exe', '-shared', '-rdynamic', '-Wall', 'C:\\Users\\zzzzz\\AppData\\Local\\Temp\\sas64_multi_reflec_212DEEA3_f7ou8t8w.c', '-o', 'C:\\Users\\zzzzz\\.sasview\\compiled_models\\sas64_multi_reflec_212DEEA3.so']' returned non-zero exit status 1.

This model was uploaded in Dec 2017 when the current release was 4.1.2, but that throws the same 'cfloat' error.