#13695: Highly nested UNPACKed data causes panic ---------------------------------+---------------------------------------- Reporter: ryanreich | Owner: (none) Type: bug | Status: new Priority: high | Milestone: 8.2.1 Component: Compiler | Version: 8.2.1-rc2 Resolution: | Keywords: Operating System: Linux | Architecture: Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #3990 | Differential Rev(s): Wiki Page: | ---------------------------------+---------------------------------------- Comment (by ryanreich): That's odd; it should "work" as-is. I wonder if I got the ghc version wrong? It's shown in the panic message, though: 8.2.0.20170505. Just in case this is an issue of some more obscure environment, let me post my stack.yaml and bigint.cabal as well. Also, here's my system info: {{{ ryan@thermophile $ uname -a Linux thermophile 4.8.0-49-generic #52-Ubuntu SMP Thu Apr 20 09:38:39 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux ryan@thermophile $ free -h total used free shared buff/cache available Mem: 7.7G 2.3G 1.9G 321M 3.5G 4.7G Swap: 3.7G 0B 3.7G ryan@thermophile $ cat /proc/cpuinfo processor : 3 (and 0, 1, 2) vendor_id : GenuineIntel cpu family : 6 model : 142 model name : Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz stepping : 9 microcode : 0x3c cpu MHz : 799.871 cache size : 4096 KB physical id : 0 siblings : 4 core id : 1 cpu cores : 2 apicid : 3 initial apicid : 3 fpu : yes fpu_exception : yes cpuid level : 22 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch epb intel_pt tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid mpx rdseed adx smap clflushopt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp bugs : bogomips : 5800.00 clflush size : 64 cache_alignment : 64 address sizes : 39 bits physical, 48 bits virtual power management: }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13695#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler