[GHC] #12581: Testsuite segfaults on OS X

[GHC]

#12581: Testsuite segfaults on OS X
---------------------------------+--------------------------------------
        Reporter:  bgamari       |                Owner:
            Type:  bug           |               Status:  new
        Priority:  normal        |            Milestone:  8.2.1
       Component:  Compiler      |              Version:  8.1
      Resolution:                |             Keywords:
Operating System:  MacOS X       |         Architecture:  x86_64 (amd64)
 Type of failure:  None/Unknown  |            Test Case:
      Blocked By:                |             Blocking:
 Related Tickets:                |  Differential Rev(s):
       Wiki Page:                |
---------------------------------+--------------------------------------
Description changed by bgamari:

@@ -0,0 +1,4 @@
+ `derefnull` and ? fail.
+
+ = Bisection log
+

New description:

 `derefnull` and ? fail.

 = Bisection log

 {{{
 git bisect start
 # bad: [34010dbe77ac405da6c671c3feb3573d0d025379] Derive the Generic
 instance in perf/compiler/T5642
 git bisect bad 34010dbe77ac405da6c671c3feb3573d0d025379
 # good: [b4dfe04aa77bb2d0ce2c7d82cab5e4425e0b738c] Fix kind generalisation
 for pattern synonyms
 git bisect good b4dfe04aa77bb2d0ce2c7d82cab5e4425e0b738c
 # skip: [39103062e50249da857761d0eaca325aa428e446] Add -XStaticPointers to
 the flag reference.
 git bisect skip 39103062e50249da857761d0eaca325aa428e446
 # good: [0c0129b6a82a87a9bba19f27a4b19fec9ccc5a8d] RtsUtils: Use `size_t`
 instead of `int` where appropriate
 git bisect good 0c0129b6a82a87a9bba19f27a4b19fec9ccc5a8d
 # good: [bdb0d24be9c83b08fd3f4b870a17f6be31a24b1b] Remote GHCi: separate
 out message types
 git bisect good bdb0d24be9c83b08fd3f4b870a17f6be31a24b1b
 # bad: [4036c1f110578f8e2813295116b79a5a06e2bf59] Testsuite: fix T10482a
 git bisect bad 4036c1f110578f8e2813295116b79a5a06e2bf59
 # bad: [6cedef01e00e95517a546a72592ba6ff07bac605] Test Trac #12133
 git bisect bad 6cedef01e00e95517a546a72592ba6ff07bac605
 # bad: [9854f14ef0a3a6f399a1aa4c141c5e3dddcd77ff] Add a new determinism
 test
 git bisect bad 9854f14ef0a3a6f399a1aa4c141c5e3dddcd77ff
 # good: [206b4a1d0e82e8f0f40f6e36cf657146a8d4b36a] Testsuite: simplify
 extra_file handling
 git bisect good 206b4a1d0e82e8f0f40f6e36cf657146a8d4b36a
 # bad: [dc62a22279846abe7e84ef57896f0a38f6b7b845] Wibble error message for
 #11471
 git bisect bad dc62a22279846abe7e84ef57896f0a38f6b7b845
 # bad: [6b3b631e90aa5f6f9322efcb81e9b13d14d087f0] Testsuite: run all
 indexed-types ways on ./validate --slow
 git bisect bad 6b3b631e90aa5f6f9322efcb81e9b13d14d087f0
 # bad: [58f0086b70f2f409b9f88de1611efcf18756f9e5] Testsuite: open/close
 stdin/stdout/stderr explicitly
 git bisect bad 58f0086b70f2f409b9f88de1611efcf18756f9e5
 # good: [bafd615e40c2a11af1390e736f6122033eecc4c6] Testsuite: do not print
 timeout message
 git bisect good bafd615e40c2a11af1390e736f6122033eecc4c6
 # first bad commit: [58f0086b70f2f409b9f88de1611efcf18756f9e5] Testsuite:
 open/close stdin/stdout/stderr explicitly
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12581#comment:1>
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