Could you elaborate? What was the problem and what was the solution?
Memory leak. As explained, it's not really Julia's fault.
This I also found amazing: https://github.com/JuliaLang/julia/issues/28726 . It took 4 hours to go from bug report about bad compiler code generation to a patch.
I have commented with some details there:
https://github.com/JuliaLang/julia/issues/30653#issuecomment...
Could you elaborate? What was the problem and what was the solution?