Re: 6.4 profiling bug

this bug is fixed in ghc-6.4.1 (see my attached profile)

Christian


Daniel Fischer wrote:
> Hello,
> I have encountered some strange behaviour with David Tweeds LaTeX-preprocessor
> (slightly modified code attached).
> When I compile it for profiling (-prof -auto-all) and run it on a .tex-file 
> containing some math-environment, it segfaults.
> Files without math are processed properly.
> All .tex-files are processed correctly (except for the weaknesses inherent in 
> the code) when the code is compiled not for profiling or with
> ghc-6.2.2 -prof -auto-all, so I'm rather convinced, it's a 6.4-bug.
>
> If you could explain this behaviour, I'd be grateful.
>
> Cheers,
>
> Daniel Fischer
>
>
> ------------------------------------------------------------------------
>
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        Wed Sep 21 17:23 2005 Time and Allocation Profiling Report  (Final)

           lpp +RTS -p -RTS Triv

        total time  =        0.00 secs   (0 ticks @ 20 ms)
        total alloc =     112,836 bytes  (excludes profiling overheads)

COST CENTRE                    MODULE               %time %alloc

trieLkp                        Trie                   0.0    8.9
relate                         Trie                   0.0   14.1
normTrie                       LPPTries               0.0    2.6
mathTrie                       LPPTries               0.0    6.1
lineCatTrie                    LPPTries               0.0    6.2
envNames                       LPPTries               0.0    4.7
CAF                            GHC.Handle             0.0    7.8
writeOutFile                   Main                   0.0   17.9
main                           Main                   0.0   12.5
format                         Main                   0.0    2.3
expEnd                         Main                   0.0    1.0
expBegin                       Main                   0.0    1.8
doMacs                         Main                   0.0    1.1
concRev                        Main                   0.0    2.0
break'                         Main                   0.0    6.5


                                                                                
               individual    inherited
COST CENTRE              MODULE                                               
no.    entries  %time %alloc   %time %alloc

MAIN                     MAIN                                                   
1           0   0.0    0.0     0.0  100.0
 CAF                     Main                                                 
172           3   0.0    0.1     0.0   71.6
  formParas              Main                                                 
181           1   0.0    1.0     0.0    3.0
   lineType              Main                                                 
185           7   0.0    0.0     0.0    2.0
    trieLkp              Trie                                                 
186          22   0.0    1.0     0.0    2.0
     relate              Trie                                                 
201          65   0.0    1.1     0.0    1.1
     con2tag_RelRes#     Trie                                                 
200          65   0.0    0.0     0.0    0.0
   con2tag_LineCat#      LPPTries                                             
184          46   0.0    0.0     0.0    0.0
  main                   Main                                                 
178           1   0.0   12.5     0.0   68.4
   expContSeqsNSymbols   Main                                                 
182           1   0.0    0.5     0.0   35.7
    doMacs               Main                                                 
192          13   0.0    1.1     0.0   29.3
     concRev             Main                                                 
198          19   0.0    2.0     0.0    2.0
     break'              Main                                                 
193          60   0.0    6.5     0.0   26.2
      trieLkp            Trie                                                 
194          66   0.0    7.5     0.0   19.6
       relate            Trie                                                 
197         582   0.0   12.2     0.0   12.2
       con2tag_RelRes#   Trie                                                 
196         582   0.0    0.0     0.0    0.0
    expCS                Main                                                 
187           7   0.0    1.0     0.0    5.5
     expEnd              Main                                                 
209           2   0.0    1.0     0.0    1.0
     expBegin            Main                                                 
202           2   0.0    1.8     0.0    2.7
      getAbbr            Trie                                                 
203           2   0.0    0.0     0.0    0.9
       compAbbr          Trie                                                 
204           6   0.0    0.3     0.0    0.9
        relate           Trie                                                 
207          29   0.0    0.5     0.0    0.5
        con2tag_RelRes#  Trie                                                 
206          56   0.0    0.0     0.0    0.0
     trieLkp             Trie                                                 
188          16   0.0    0.4     0.0    0.8
      relate             Trie                                                 
191          24   0.0    0.3     0.0    0.3
      con2tag_RelRes#    Trie                                                 
190          24   0.0    0.0     0.0    0.0
    splitScan            Main                                                 
183           8   0.0    0.5     0.0    0.5
   format                Main                                                 
180           1   0.0    2.3     0.0    2.3
   writeOutFile          Main                                                 
179           1   0.0   17.9     0.0   17.9
 CAF                     GHC.Int                                              
144           1   0.0    0.1     0.0    0.1
 CAF                     GHC.Handle                                           
125           9   0.0    7.8     0.0    7.8
 CAF                     System.Posix.Internals                               
109           9   0.0    0.2     0.0    0.2
 CAF                     LPPTries                                              
92           5   0.0    0.1     0.0   20.3
  mathTrie               LPPTries                                             
208           1   0.0    6.1     0.0    6.1
  envNames               LPPTries                                             
205           1   0.0    4.7     0.0    4.7
  lineCatTrie            LPPTries                                             
199           1   0.0    6.2     0.0    6.2
  normTrie               LPPTries                                             
195           1   0.0    2.6     0.0    2.6
  csTrie                 LPPTries                                             
189           1   0.0    0.8     0.0    0.8
 CAF                     Trie                                                  
91           1   0.0    0.0     0.0    0.0
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