Well, I just found three more c++ bugs. I will file them when I have
Trac access. In the meantime, I post them here before I forget about
them this week-end.
*******************************************************
* Bug#1:
*******************************************************
Compiler crash when a template argument is an undeclared object.
Compiling the following code:
"""""
from libcpp.vector cimport vector
cdef vector[x] *vect
"""""
crash the compiler with the following traceback:
"""""
Traceback (most recent call last):
File "/usr/local/bin/cython", line 8, in <module>
main(command_line = 1)
File "/home/toki/install/cython-devel/Cython/Compiler/Main.py", line
776, in main
result = compile(sources, options)
File "/home/toki/install/cython-devel/Cython/Compiler/Main.py", line
751, in compile
return compile_multiple(source, options)
File "/home/toki/install/cython-devel/Cython/Compiler/Main.py", line
723, in compile_multiple
result = run_pipeline(source, options)
File "/home/toki/install/cython-devel/Cython/Compiler/Main.py", line
593, in run_pipeline
err, enddata = context.run_pipeline(pipeline, source)
File "/home/toki/install/cython-devel/Cython/Compiler/Main.py", line
234, in run_pipeline
data = phase(data)
File "/home/toki/install/cython-devel/Cython/Compiler/ParseTreeTransforms.py",
line 965, in __call__
return super(AnalyseDeclarationsTransform, self).__call__(root)
File "/home/toki/install/cython-devel/Cython/Compiler/Visitor.py",
line 276, in __call__
return super(CythonTransform, self).__call__(node)
File "/home/toki/install/cython-devel/Cython/Compiler/Visitor.py",
line 259, in __call__
return self.visit(root)
File "/home/toki/install/cython-devel/Cython/Compiler/Visitor.py",
line 28, in visit
return handler_method(obj)
File "/home/toki/install/cython-devel/Cython/Compiler/ParseTreeTransforms.py",
line 973, in visit_ModuleNode
node.analyse_declarations(self.env_stack[-1])
File "/home/toki/install/cython-devel/Cython/Compiler/ModuleNode.py",
line 63, in analyse_declarations
self.body.analyse_declarations(env)
File "/home/toki/install/cython-devel/Cython/Compiler/Nodes.py",
line 341, in analyse_declarations
stat.analyse_declarations(env)
File "/home/toki/install/cython-devel/Cython/Compiler/Nodes.py",
line 911, in analyse_declarations
base_type = self.base_type.analyse(env)
File "/home/toki/install/cython-devel/Cython/Compiler/Nodes.py",
line 836, in analyse
self.type = base_type.specialize_here(self.pos, template_types)
File "/home/toki/install/cython-devel/Cython/Compiler/PyrexTypes.py",
line 1924, in specialize_here
return self.specialize(dict(zip(self.templates, template_values)))
File "/home/toki/install/cython-devel/Cython/Compiler/PyrexTypes.py",
line 1940, in specialize
specialized.scope = self.scope.specialize(values)
File "/home/toki/install/cython-devel/Cython/Compiler/Symtab.py",
line 1605, in specialize
entry.cname)
File "/home/toki/install/cython-devel/Cython/Compiler/Symtab.py",
line 350, in declare_type
entry = self.declare(name, cname, type, pos, visibility)
File "/home/toki/install/cython-devel/Cython/Compiler/Symtab.py",
line 306, in declare
if type.is_buffer and not isinstance(self, LocalScope):
AttributeError: 'NoneType' object has no attribute 'is_buffer'
""""""
*************************************************
* Bug#2:
**************************************************
operator[] doesn't return the right type.
If cppclass Foo contain the declaration: "T operator[](int)", and foo
is an instance of Foo, foo[4] is thought by cython to be of type Foo
(instead of T) .
For example:
"""""
from libcpp.vector cimport vector
cdef vector[int] *vect=new vector[int]()
vect.push_back(5)
vect.push_back(6)
print vect[0]
"""""
gives the following error:
"""""
print vect[0]
^
/home/toki/progs/cython13tests/bug1.pyx:6:10: Cannot convert
'vector<int>' to Python object
"""""
****************************************************
* Bug#3:
****************************************************
cython.operator.dereference and functions returning a reference are
not recognized as l-values.
For example, the following code:
"""""
cimport cython.operator.dereference
from libcpp.vector cimport vector
cdef vector[int] *vect=new vector[int]()
vect.push_back(5)
vect.push_back(6)
cdef vector[int].iterator iter=vect.begin()
cython.operator.dereference(iter)=8
""""""
gives the following error:
""""""
cython.operator.dereference(iter)=5
^
/home/toki/progs/cython13tests/bug2.pyx:8:27: Cannot assign to or delete this
""""""
In the same way, replacing the last line by: "vect.at(0)=5" gives:
""""""
vect.at(0)=5
^
/home/toki/progs/cython13tests/bug2.pyx:7:7: Cannot assign to or delete this
""""""
While " *iter=5 " and " vect.at(0)=5 " ares valid C++ code.
*************************************************************
That will be all for today :-)
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