I don’t have a minimal example to demonstrate, but wanted to throw in an anecdote that I don’t think 9.2.8 backported this fix entirely. A user of my app reported that they were running into this error on their kernel version, and I had been compiling with 9.2.6 I believe. I first upgraded to 9.2.8 but they reported it was still happening, and I then confirmed that on my end. I have upgraded again to 9.4.6 and it seems to be working. I didn’t try +RTS -xp -RTS on any version though.
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