[developers] PET 0.99.12 Core Dumps in Packing Mode

[Eric Nichols]

Greetings,

I have been playing around with the new release of PET (thanks bernd
and stephen :-)
and I think I have found a bug. It seems that cheap will core dump
when loading a grammar with the --packing flag enabled. I have
verified that this occurs in both ERG (2005/10/30) and JACY
(2005/11/30). This appears to have something to do with MRS because it
only occurs if I enable MRS mode when PET is compiled. However cheap
fails to read the grammar successfully REGARDLESS OF WHETHER THE --MRS
FLAG IS SET.

Eric

eric-n at thinkpad:~/delphin/grammars/jp051130 [18:58:13] [22]
:( cheap -packing ~/delphin/grammars/en051005/english
reading `/home/eric-n/delphin/grammars/en051005/pet/english.set'...
including `/home/eric-n/delphin/grammars/en051005/pet/common.set'...
`/home/eric-n/delphin/grammars/en051005/pet/global.set'...
loading `/home/eric-n/delphin/grammars/en051005/english.grm' (LinGO
(05-Sept-05)) reading ME model
`/home/eric-n/delphin/grammars/en051005/rondane.mem'... [11846
features] zsh: segmentation fault  cheap -packing
~/delphin/grammars/en051005/english
eric-n at thinkpad:~/delphin/grammars/jp051130 [18:58:23] [23]
:( cheap -packing ~/delphin/grammars/jp051120/japanese
reading `/home/eric-n/delphin/grammars/jp051120/pet/japanese.set'...
loading `/home/eric-n/delphin/grammars/jp051120/japanese.grm' (Jacy
(2005-11-20)) reading ME model
`/home/eric-n/delphin/grammars/jp051120/LXD-DEF-6.jp051120.mem'...
[60508 features] Ignoring entry with unknown rule `$-*-' in irregular
forms
Ignoring entry with unknown rule `$this' in irregular forms
Ignoring entry with unknown rule `$the' in irregular forms
Ignoring entry with unknown rule `$currently' in irregular forms
Ignoring entry with unknown rule `$c2stem' in irregular forms
Ignoring entry with unknown rule `$---' in irregular forms
zsh: segmentation fault  cheap -packing ~/delphin/grammars/jp051120/japanese
eric-n at thinkpad:~/delphin/grammars/jp051130 [18:58:46] [24]
:(
eric-n at thinkpad:~/delphin/grammars/jp051130 [18:59:36] [25]
:( cheap
parse_options(): expecting name of grammar to load
cheap version 0.99.12
usage: `cheap [options] grammar-file'; valid options are:
  `-tsdb[=n]' --- enable [incr tsdb()] slave mode (protocol version = n)
  `-nsolutions[=n]' --- find best n only, 1 if n is not given
  `-verbose[=n]' --- set verbosity level to n
  `-limit=n' --- maximum number of passive edges
  `-memlimit=n' --- maximum amount of fs memory (in MB)
  `-no-shrink-mem' --- don't shrink process size after huge items
  `-no-filter' --- disable rule filter
  `-qc-unif=n' --- use only top n quickcheck paths (unification)
  `-qc-subs=n' --- use only top n quickcheck paths (subsumption)
  `-compute-qc[=file]' --- compute quickcheck paths (output to file,
                           default /tmp/qc.tdl)
  `-compute-qc-unif[=file]' --- compute quickcheck paths only for
unificaton (output to file,
                           default /tmp/qc.tdl)
  `-compute-qc-subs[=file]' --- compute quickcheck paths only for
subsumption (output to file,
                           default /tmp/qc.tdl)
  `-mrs[=mode]' --- compute MRS semantics (in specified mode)
  `-key=n' --- select key mode (0=key-driven, 1=l-r, 2=r-l, 3=head-driven)
  `-no-hyper' --- disable hyper-active parsing
  `-no-derivation' --- disable output of derivations
  `-rulestats' --- enable tsdb output of rule statistics
  `-no-chart-man' --- disable chart manipulation
  `-default-les' --- enable use of default lexical entries
  `-lattice' --- word lattice parsing
  `-server[=n]' --- go into server mode, bind to port `n' (default: 4711)
  `-k2y[=n]' --- output K2Y, filter at `n' % of raw atoms (default: 50)
  `-k2y-segregation' --- pre-nominal modifiers in analogy to reduced relatives
  `-one-meaning[=n]' --- non exhaustive search for first [nth]
                         valid semantic formula
  `-yy' --- YY input mode (highly experimental)
  `-failure-print' --- print failure paths
  `-no-fullform-morph' --- disable full form morphology
  `-pg' --- print grammar in ASCII form
  `-nbest' --- n-best parsing mode
  `-packing[=n]' --- set packing to n (bit coded; default: 7)
  `-log=[+]file' --- log server mode activity to `file' (`+' appends)
  `-tsdbdump directory' --- write incr[tsdb] item, result and parse
files to `directory'
  `-jxchgdump directory' --- write jxchg/approximation chart files to
`directory'
  `-partial' --- print partial results in case of parse failure
  `-results=n' --- print at most n (full) results
  `-tok=(string|yy|yy_counts|xml|xml_counts)' --- select input method
(default `string')
  `-comment-passthrough[=1]' --- allow input comments (-1 to suppress output)
eric-n at thinkpad:~/delphin/grammars/jp051130 [18:59:38] [26]
:(

--
--Eric Nichols