[GHC] #2148: x86_64 code use several GiB of memory generates: internal error: ASSERTION FAILED: file sm/Storage.c, line 1126

[GHC]

#2148: x86_64 code use several GiB of memory generates: internal error: ASSERTION
FAILED: file sm/Storage.c, line 1126
----------------------------+-----------------------------------------------
 Reporter:  twhitehead      |          Owner:  simonmar      
     Type:  bug             |         Status:  new           
 Priority:  normal          |      Milestone:  6.8.3         
Component:  Runtime System  |        Version:  6.8.2         
 Severity:  normal          |     Resolution:                
 Keywords:                  |     Difficulty:  Unknown       
 Testcase:                  |   Architecture:  x86_64 (amd64)
       Os:  Linux           |  
----------------------------+-----------------------------------------------
Comment (by twhitehead):

 I managed to cleanup the code even further and still have it exhibit the
 bug.  The new code just generate a list of M N-length substrings (when I
 said prefixes above, I meant substrings) from the fixed !ByteString
 ['0'..'Z'].

 Compiling as above ("ghc --make -O2 -debug Bug") and running with "./Bug 8
 134217728" (i.e., N=8 and M=134217728) produces the following after about
 an hour and three quarters:

 {{{
 Starting block 0
 Starting block 1
 Memory leak detected
   gen 0 blocks :   57
   gen 1 blocks : 2523057
   nursery      :  128
   allocate()   :    0
   retainer     :    0
   arena blocks :    0
   exec         :    0
   free         : 5830
   total        : 2529072

   in system    : 3555720
 Bug_: internal error: ASSERTION FAILED: file sm/Storage.c, line 1206

     (GHC version 6.8.2 for x86_64_unknown_linux)
     Please report this as a GHC bug:
 http://www.haskell.org/ghc/reportabug
 }}}

 I'll attach the simplified code.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2148#comment:3>
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