bt #0 LDV_recordDead (c=c@entry=0x42000a60c8, size=4, size@entry=6) at rts/ProfHeap.c:205 #1 0x0000000000a790f4 in processHeapClosureForDead (c=0x42000a60c8) at rts/LdvProfile.c:124 #2 processNurseryForDead () at rts/LdvProfile.c:192 #3 LdvCensusForDead (N=1) at rts/LdvProfile.c:236 #4 0x0000000000a8174b in GarbageCollect (collect_gen=collect_gen@entry=1, do_heap_census=do_heap_census@entry=false, gc_type=gc_type@entry=0, cap=cap@entry=0x12afd80 <MainCapability>, idle_cap=idle_cap@entry=0x0) at rts/sm/GC.c:461 #5 0x0000000000a6ff55 in scheduleDoGC (pcap=pcap@entry=0x7ffc87622758, force_major=force_major@entry=true, task=0x1e0d660) at rts/Schedule.c:1806 #6 0x0000000000a71110 in exitScheduler (wait_foreign=wait_foreign@entry=false) at rts/Schedule.c:2663 #7 0x0000000000a7cb12 in hs_exit_ (wait_foreign=false) at rts/RtsStartup.c:392 #8 0x0000000000a7cfc5 in shutdownHaskellAndExit (n=0, fastExit=fastExit@entry=0) at rts/RtsStartup.c:553 #9 0x0000000000a6dde1 in hs_main (argc=<optimized out>, argv=<optimized out>, main_closure=<optimized out>, rts_config=...) at rts/RtsMain.c:99 #10 0x0000000000410fd3 in main () }}} `ctr` is `NULL` (which there happens to be an `ASSERT` to check for, but
#15382: heapprof001 segfaults in prof_hc_hb way on i386 -------------------------------------+------------------------------ Reporter: bgamari | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: 8.8.1 Component: Compiler | Version: 8.4.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: x86 Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------ Comment (by bgamari): I have been able to reproduce this issue under `rr`. The backtrace looks like, {{{ LDV_recordDead (c=c@entry=0x42000a60c8, size=4, size@entry=6) at rts/ProfHeap.c:205 205 ctr->c.ldv.void_total += size; the testcase isn't compiled against the debug RTS). -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15382#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler