#11978: running a profiled build of shake test suite with rts args +RTS -hb -N10 triggers SIGSEGV ---------------------------------+---------------------------------------- Reporter: carter | Owner: Type: bug | Status: new Priority: highest | Milestone: Component: Compiler | Version: 8.0.1 Resolution: | Keywords: Operating System: MacOS X | Architecture: Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #4820 | Differential Rev(s): Wiki Page: | ---------------------------------+---------------------------------------- Comment (by erikd): Recreated @carter's original test running `shake`'s test suite. With my proposed fix applied, I still get a segfault. Running under `gdb` provides the following backtrace: {{{ Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x7fffbb7fe700 (LWP 9743)] overwritingClosure (p=0x20010d8e0) at includes/rts/storage/ClosureMacros.h:535 535 ((StgThunk *)(p))->payload[i] = 0; (gdb) bt #0 overwritingClosure (p=0x20010d8e0) at includes/rts/storage/ClosureMacros.h:535 #1 doneWithMsgThrowTo (m=0x20010d8e0) at rts/Messages.h:25 #2 executeMessage (cap=cap@entry=0x1496740, m=0x20010d8e0) at rts/Messages.c:104 #3 0x0000000000f47834 in scheduleProcessInbox (pcap=<optimized out>) at rts/Schedule.c:1005 #4 scheduleFindWork (pcap=<optimized out>) at rts/Schedule.c:616 #5 schedule (initialCapability=<optimized out>, task=task@entry=0x7fff88000910) at rts/Schedule.c:274 #6 0x0000000000f490dc in scheduleWorker (cap=<optimized out>, task=0x7fff88000910) at rts/Schedule.c:2382 #7 0x00007ffff75b6454 in start_thread (arg=0x7fffbb7fe700) at pthread_create.c:334 #8 0x00007ffff6d72eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 (gdb) print i $1 = 910560 (gdb) print p $2 = (StgClosure *) 0x20010d8e0 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11978#comment:8 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler