#7361: Segmentation fault on 5f37e0c71ff4af8539c5aebc739b006b4f0c6ebf
------------------------------+---------------------------------------------
Reporter: bgamari | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler
Version: | Keywords:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
Failure: Runtime crash | Testcase:
Blockedby: | Blocking:
Related: |
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Comment(by bgamari):
When compiling with -dcore-lint -debug -O, I see the following output from
the compiler,
{{{
*** Core Lint warnings : in result of Desugar (after optimization) ***
{-# LINE 26 "BayesStack/Models/Topic/Types.hs #-}: Warning:
[RHS of $c/=_a1cN :: BayesStack.Models.Topic.Types.Edge
-> BayesStack.Models.Topic.Types.Edge ->
GHC.Types.Bool]
INLINE binder is (non-rule) loop breaker: $c/=_a1cN
}}}
gdb also gives me a slightly different stack trace,
{{{
Program received signal SIGSEGV, Segmentation fault.
0x00007fffec55f136 in scavenge_mutable_list (bd=0x7fffe6202880,
gen=0x6379e8) at rts/sm/Scav.c:1353
1353 switch (get_itbl((StgClosure *)p)->type) {
Missing separate debuginfos, use: debuginfo-install
glibc-2.12-1.80.el6_3.5.x86_64 gmp-4.3.1-7.el6_2.2.x86_64
(gdb) bt
#0 0x00007fffec55f136 in scavenge_mutable_list (bd=0x7fffe6202880,
gen=0x6379e8) at rts/sm/Scav.c:1353
#1 0x00007fffec55f328 in scavenge_capability_mut_lists
(cap=0x7fffec791100) at rts/sm/Scav.c:1427
#2 0x00007fffec556acb in GarbageCollect (collect_gen=0,
do_heap_census=rtsFalse, gc_type=0, cap=0x7fffec791100) at rts/sm/GC.c:343
#3 0x00007fffec544289 in scheduleDoGC (pcap=0x7fffffffdff0,
task=0x645ce0, force_major=rtsFalse) at rts/Schedule.c:1667
#4 0x00007fffec5437dc in schedule (initialCapability=0x7fffec791100,
task=0x645ce0) at rts/Schedule.c:582
#5 0x00007fffec544bf3 in scheduleWaitThread (tso=0x7fffe6305390, ret=0x0,
pcap=0x7fffffffe0d0) at rts/Schedule.c:2368
#6 0x00007fffec53e62a in rts_evalLazyIO (cap=0x7fffffffe0d0, p=0x62c260,
ret=0x0) at rts/RtsAPI.c:497
#7 0x00007fffec5412ff in real_main () at rts/RtsMain.c:63
#8 0x00007fffec5413f4 in hs_main (argc=1, argv=0x7fffffffe248,
main_closure=0x62c260, rts_config=...) at rts/RtsMain.c:114
#9 0x000000000042aa03 in main (argc=1, argv=0x7fffffffe248) at
/tmp/ghc9328_0/ghc9328_0.c:7
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7361#comment:2>
GHC <http://www.haskell.org/ghc/>
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