On Monday, December 24, 2012 11:18:26 PM UTC+1, Jean-Pierre Flori wrote: > > > > On Monday, December 24, 2012 10:54:48 PM UTC+1, Simon King wrote: >> >> Hi Jean-Pierre, >> >> On 2012-12-24, Jean-Pierre Flori <jpf...@gmail.com> wrote: >> > Not sure we got these so clearly before, but using --without-pymalloc >> and >> > Valgrind (hint: finish and review #13060) I get lots of >> > >> > >> >==28631== Invalid read of size 8 >> >==28631== at 0x10429E50: >> > __pyx_tp_dealloc_4sage_9structure_15category_object_CategoryObject >> > (category_object.c:8990) >> > ... >> >==28631== by 0x10A6CD28: >> > __pyx_pw_4sage_9structure_11coerce_dict_16TripleDictEraser_3__call__ >> > (coerce_dict.c:1225) >> >> OK, that's good, because it clearly points to the stuff from #715 and >> thus gives hope to find a bug in the new code. >> > Yup, let's hope so. > > Maybe the problem is with endomorphism rings, because we have the domain > and codomain pointing to the same parent, that's a nice culprit for a > superfluous decref. > Any reason for calling directly _refcache.__delitem__ rather than del _refcache ? Changing this solves the problem, but surely only by hiding the bug...
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