[GHC] #7323: decoding GADTs gives internal error: stg_ap_v_ret

[GHC]

#7323: decoding GADTs gives internal error: stg_ap_v_ret
---------------------------+------------------------------------------------
 Reporter:  heisenbug      |          Owner:                
     Type:  bug            |         Status:  new           
 Priority:  normal         |      Component:  Compiler      
  Version:  7.7            |       Keywords:                
       Os:  Linux          |   Architecture:  x86_64 (amd64)
  Failure:  Runtime crash  |       Testcase:  yes           
Blockedby:                 |       Blocking:                
  Related:                 |  
---------------------------+------------------------------------------------

Comment(by heisenbug):

 This is what gdb has to say:
 {{{
 (gdb) run
 Starting program: /home/ggreif/ReleaseFeatureMatrix/internal-error
 warning: no loadable sections found in added symbol-file system-supplied
 DSO at 0x2aaaaaaab000
 [Thread debugging using libthread_db enabled]
 internal-error: internal error: stg_ap_v_ret
     (GHC version 7.7.20121012 for x86_64_unknown_linux)
     Please report this as a GHC bug:
 http://www.haskell.org/ghc/reportabug

 Program received signal SIGABRT, Aborted.
 0x00000035b2a30285 in raise () from /lib64/libc.so.6
 (gdb) bt
 #0  0x00000035b2a30285 in raise () from /lib64/libc.so.6
 #1  0x00000035b2a31d30 in abort () from /lib64/libc.so.6
 #2  0x00002aaaac623799 in rtsFatalInternalErrorFn (s=0x2aaaac660128
 "stg_ap_v_ret",
     ap=0x7fffffff8680) at rts/RtsMessages.c:170
 #3  0x00002aaaac623304 in barf (s=0x2aaaac660128 "stg_ap_v_ret") at
 rts/RtsMessages.c:42
 #4  0x00002aaaac64d7ae in stg_ap_v_info ()
    from /home/ggreif/lib/ghc-7.7.20121012/rts-1.0/libHSrts_debug-
 ghc7.7.20121012.so
 #5  0x0000000000000000 in ?? ()
 }}}

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7323#comment:2>
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