Opened 8 months ago

Last modified 8 months ago

#16058 new bug

GHC built on macOS Mojave nondeterministically segfaults

Reported by: bgamari Owned by:
Priority: highest Milestone: 8.8.1
Component: Compiler Version: 8.6.3
Keywords: Cc:
Operating System: MacOS X Architecture: x86_64 (amd64)
Type of failure: Building GHC failed Test Case:
Blocked By: Blocking:
Related Tickets: Differential Rev(s):
Wiki Page:


I am seeing perhaps a quarter of GHC builds on the GitLab Darwin builder (running Mojave) fail with a segfault in ghc-stage1. Unfortunately I've been entirely unable to reproduce this in a debugger (which isn't surprising given the low probability of the crash manifesting).

Given that we haven't seen this in any Darwin builds until now I'm suspicious of either the XCode toolchain or Mojave itself.

Change History (3)

comment:2 Changed 8 months ago by bgamari

For the record I have seen this while using both gcc and Apple's clang.

comment:3 Changed 8 months ago by gwynne

previous comment removed

This was not the crash I thought it was; I'm filing a separate ticket.

Last edited 8 months ago by gwynne (previous) (diff)
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