I think there might be a memory leak when using
PyDict_SetItem. (specifically this line which has a dubious comment by it).
My reason for thinking it’s a leak is from using the Memory Profiler package, which I was using to investigate a horrendous C extension I was writing.
I have created a minimal example which tests this out, and if I comment out the above line, the apparent leak does go away. However this isn’t a particularly robust approach, and isn’t helpful for writing tests to confirm a fix does indeed solve the issue. All tests currently pass with and without that line.
I tried using Valgrind but it didn’t seem to show any differences in the various cases I tried, not that I know what I’m doing on that front.
I would appreciate any tips on how to debug this, confirm it is/isn’t a memory leak, create some tests,and also check there are no side-effects to removing that line. Thanks!