Hi Robert After some internal discussion, we have not found an obvious way to not have the extra typedef. Is this a big problem? Maybe there are other people on the list that are more fluent in C++ and could think of a way to do it? Greetings Hannes On 30 April 2013 07:48, Robert Bradshaw <robertwb@gmail.com> wrote:
Dear mailing list
In the process of developing a rather large Cython project where we wrap
scientific OpenMS library (http://sourceforge.net/projects/open-ms/) using Cython, we have come across an issue with the C++ code that is generated by Cython. The issue is that Cython generates C++ that is not compatible with the Clang compiler.
I hope this is the correct mailing list to report this issue since it seems to be a bug in Cython and not in Clang (after some discussion we have concluded that Clang is most likely correct in rejecting the generated code). Since we do not have access to the issue tracker, we hoped posting our issue here would clear up matters.
The issue occurs with the following minimal testcase:
from libcpp.vector cimport vector as libcpp_vector from cython.operator cimport dereference as deref, preincrement as inc
cdef class TestClass:
cdef libcpp_vector[float] inst
def __iter__(self): it = self.inst.begin() while it != self.inst.end(): yield deref(it) inc(it)
When compiled with Cython to C++, it generates C++ that cannot be compiled with Clang (however it seems that gcc and MSVS accept the code). It seems
same issue with Clang was already discussed here: https://bugzilla.mozilla.org/show_bug.cgi?id=623303 and the conclusion was that Clang is correct in reporting the code as erroneous.
In the above case, the invalid C++ code that gets generated is:
p->__pyx_v_it.std::vector<float>::iterator::~iterator();
The correct code for the above case would probably be (this is just a suggestion, it compiles with gcc and clang on our machines and our tests run through with it):
typedef std::vector<float>::iterator _it; p->__pyx_v_it.~_it();
We have tested it with the 0.18 release as well as the newest 0.19b2 build from github (58131b68dc033fc7ca269d875a2aab2b4e9646a2) and the results were
On Fri, Apr 12, 2013 at 8:04 AM, Hannes Röst <hroest_nospam2333@quantentunnel.de> wrote: the that the the
same.
Thanks for the report. Can you think of a solution that doesn't require a special typedef declaration for each type you might want to call a destructor on? _______________________________________________ cython-devel mailing list cython-devel@python.org http://mail.python.org/mailman/listinfo/cython-devel