ARMv7 race condition
Here's an ARMv7 validate job in which
T7815 fails with an assertion error in RTS:
T7815: internal error: ASSERTION FAILED: file rts/STM.c, line 587
(GHC version 22.214.171.12400127 for arm_unknown_linux)
Please report this as a GHC bug: https://www.haskell.org/ghc/reportabug
This is the line, not particularly helpful.
I suspect it's a race condition, because the pipeline of a child commit didn't trigger the assertion.
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