#12215: Memleak in UniqueRepresentation, @cached_method
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Reporter: vbraun | Owner: rlm
Type: defect | Status: needs_work
Priority: major | Milestone: sage-5.0
Component: memleak | Keywords: UniqueRepresentation
cached_method caching
Work_issues: Fix two tests | Upstream: N/A
Reviewer: | Author: Simon King
Merged: | Dependencies: #11115 #11900
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Comment(by vbraun):
I ran all doctests and there are a few crashes in `functor.so` elsewhere.
I didn't have to apply any additional patches. It dies with
{{{
Action __cinit__ 84546128
Action __dealloc__ 84546128
Action __cinit__ 84546128
Action __dealloc__ 84546128
Action __cinit__ 84628736
Action __cinit__ 84546128
Action __dealloc__ 84546128
Action __dealloc__ 84546128
/home/vbraun/opt/sage-4.8.rc0/local/lib/libcsage.so(print_backtrace+0x31)[0x7fcc0db1adf6]
/home/vbraun/opt/sage-4.8.rc0/local/lib/libcsage.so(sigdie+0x14)[0x7fcc0db1ae28]
/home/vbraun/opt/sage-4.8.rc0/local/lib/libcsage.so(sage_signal_handler+0x20c)[0x7fcc0db1aa76]
}}}
It seems that its just memory corruption that manifests itself by freeing
the object twice. But the error is presumably elsewhere. Also the gdb
stack trace is completely corrupted.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12215#comment:65>
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