segfault in bio_readhdr (pocketsphinx, VS9)

[Fabrizio Morbini]

Hi, i'm trying to use pocketsphinx with visual studio 9.
pocketsphinx 0.6 compiles fine (with sphinxbase 0.6) but when i execute
pocketsphinx_batch.exe on the following configuration file:
<start cfg="" file="">
-hmm ../pocketsphinx/model/hmm/en/tidigits
-lm ../pocketsphinx/model/lm/en/tidigits.DMP
-dict ../pocketsphinx/model/lm/en/tidigits.dic
-ctl ../pocketsphinx/test/data/tidigits/tidigits.ctl
-cepdir ../pocketsphinx/test/data/tidigits
-hyp testest.match
-samprate 16000
<end cfg="" file=""> </end></start>

I get a segmentation fault in the first fgets of the function bio_readhdr when
trying to read the file ../../model/hmm/en/tidigits/transition_matrices. The
output is:

INFO: acmod.c(238): Parsed model-specific feature parameters from
../../model/hmm/en/tidigits/feat.params
INFO: fe_interface.c(288): You are using the internal mechanism to generate
the seed.
INFO: feat.c(848): Initializing feature stream to type: 's2_4x', ceplen=13,
CMN='current', VARNORM='no', AGC='none'
INFO: cmn.c(142): mean= 12.00, mean= 0.0
INFO: mdef.c(520): Reading model definition: ../../model/hmm/en/tidigits/mdef
INFO: mdef.c(531): Found byte-order mark BMDF, assuming this is a binary mdef
file
INFO: bin_mdef.c(330): Reading binary model definition:
../../model/hmm/en/tidigits/mdef
INFO: bin_mdef.c(508): 34 CI-phone, 396 CD-phone, 5 emitstate/phone, 170 CI-
sen, 670 Sen, 222 Sen-Seq
INFO: tmat.c(205): Reading HMM transition probability matrices:
../../model/hmm/en/tidigits/transition_matrices

The same cfg file above works fine with the executable created in cygwin (from
the same source code).

Thanks,
fabrizio.

[Nickolay V. Shmyrev]

Hello

Thanks for your report. Can you please provide a stacktrace for the segfault.

[Fabrizio Morbini]

here is the call stack displayed by VS9 when the problem happens:

ntdll.dll!77228c39()

ntdll.dll!77228b48()

sphinxbase.dll!_lock_file(_iobuf * pf=0x005f0480) Line 242 C
sphinxbase.dll!fgets(char * string=0x0018b854, int count=16384, _iobuf *
str=0x005f0480) Line 71 + 0x9 bytes C
sphinxbase.dll!bio_readhdr(_iobuf * fp=0x005f0480, char * * *
argname=0x0018f980, char * * * argval=0x0018f974, int * swap=0x0018f9e0) Line
163 + 0x15 bytes C
pocketsphinx.dll!tmat_init(const char * file_name=0x00344928, logmath_s *
lmath=0x00344318, double tpfloor=9.9999997473787516e-005, int breport=1) Line
215 + 0x1e bytes C
pocketsphinx.dll!acmod_init_am(acmod_s * acmod=0x00344a50) Line 100 + 0x41
bytes C
pocketsphinx.dll!acmod_init(cmd_ln_s * config=0x00344230, logmath_s *
lmath=0x00344318, fe_s * fe=0x00000000, feat_s * fcb=0x00000000) Line 269 +
0x9 bytes C
pocketsphinx.dll!ps_reinit(ps_decoder_s * ps=0x00344270, cmd_ln_s *
config=0x00344230) Line 234 + 0x16 bytes C
pocketsphinx.dll!ps_init(cmd_ln_s * config=0x00344230) Line 300 + 0xd bytes C
pocketsphinx_batch.exe!main(int argc=2, char * * argv=0x002f1e98) Line 625 +
0xc bytes C
pocketsphinx_batch.exe!__tmainCRTStartup() Line 266 + 0x19 bytes C
pocketsphinx_batch.exe!mainCRTStartup() Line 182 C
kernel32.dll!76d03677()
ntdll.dll!77229d72()
ntdll.dll!77229d45()
pocketsphinx.dll!UnDecorator::getDecoratedName() Line 987 + 0x14 bytes C++

[Nickolay V. Shmyrev]

Hm, strange

It works with VC2008 ExpressEdition here. Are you sure you didn't corrupt the
pocketsphinx archive somehow?

[Fabrizio Morbini]

Hi Nickolay, the problem was in the VS configuration file. I had changed the
property:
Configuration properties->C/C++->Code generation->Runtime library
from: Multi-threaded Debug DLL (/MDd)
to: Multi-threaded Debug (/MTd)

because i wanted to remove the dependency on VS runtime dll.

apparently that breaks pocketsphinx or requires some other option to be
changed to make it work.

thanks.