Segmentation faults of bootstrap compiler?

Ben Gamari ben at
Fri Oct 6 13:25:41 UTC 2017

Ben Gamari <ben at> writes:

> Hello everyone,
> Earlier this week there was a commit (perhaps
> ef26182e2014b0a2a029ae466a4b121bf235e4e4) which appears to trigger
> segmentation faults of the stage 0 compiler (GHC 8.2.1) during
> validation on Harbormaster (e.g. [1]). Unfortunately I've been unable to
> reproduce this reliably. Has anyone else observed this in their own
> environment?
I have been able to collect a core dump of the crashing compiler and
have opened #14329 to track the issue.


- Ben

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