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mblondel avatar mblondel commented on July 21, 2024

Confirmed. Thanks for the bug report!

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mblondel avatar mblondel commented on July 21, 2024

Could you try with Cython 0.17.2? (released today)

If the bug is still there, we'll have to create a minimalistic reproducible example and file a bug report to Cython.

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Raz0r avatar Raz0r commented on July 21, 2024

Yes, the same error on Cython 0.17.2:

cython --cplus lightning/dual_cd_fast.pyx
cython --cplus lightning/kernel_fast.pyx

Error compiling Cython file:
------------------------------------------------------------
...
        if self.size + col_size > self.capacity:
            if self.verbose >= 2:
                print "Empty cache by half"
            self._clear_columns(self.columns.size() / 2)

        self.columns[0][i] = <double*> stdlib.calloc(self.n_samples,
                      ^
------------------------------------------------------------

lightning/kernel_fast.pyx:202:23: Compiler crash in AnalyseExpressionsTransform

ModuleNode.body = StatListNode(kernel_fast.pyx:9:0)
StatListNode.stats[9] = StatListNode(kernel_fast.pyx:138:5)
StatListNode.stats[0] = CClassDefNode(kernel_fast.pyx:138:5,
    as_name = u'KernelCache',
    base_class_module = u'',
    base_class_name = u'Kernel',
    class_name = u'KernelCache',
    module_name = u'',
    visibility = u'private')
CClassDefNode.body = StatListNode(kernel_fast.pyx:140:4)
StatListNode.stats[5] = CFuncDefNode(kernel_fast.pyx:189:9,
    args = [...]/2,
    modifiers = [...]/0,
    visibility = u'private')
File 'Nodes.py', line 343, in analyse_expressions: StatListNode(kernel_fast.pyx:190:8)
File 'Nodes.py', line 4308, in analyse_expressions: SingleAssignmentNode(kernel_fast.pyx:202:29)
File 'Nodes.py', line 4414, in analyse_types: SingleAssignmentNode(kernel_fast.pyx:202:29)
File 'ExprNodes.py', line 2601, in analyse_target_types: IndexNode(kernel_fast.pyx:202:23,
    result_is_used = True,
    use_managed_ref = True)
File 'ExprNodes.py', line 3017, in is_lvalue: IndexNode(kernel_fast.pyx:202:23,
    result_is_used = True,
    use_managed_ref = True)

Compiler crash traceback from this point on:
  File "/usr/local/lib/python2.6/dist-packages/Cython/Compiler/ExprNodes.py", line 3017, in is_lvalue
    return not base_type.base_type.is_array
AttributeError: 'CppClassType' object has no attribute 'base_type'
make: *** [lightning/kernel_fast.cpp] Error 1

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mblondel avatar mblondel commented on July 21, 2024

I just tried on Cython v 0.19 and it compiles fine now (probably because I removed support for kernels).

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