Octave fails after a certain number of calls to ReadSegy

[wbpramik]

Hi

I have a program that reads SEGY data (using SegyMat) that fails after a
certain number of calls to ReadSegy.  The number of calls before failure is
between 502 and 506 depending on the version of the program I am trying to
run.

I created a simplified version of the program below:

clear
#
# load the segy package
#

pkg load signal;
addpath ('C:\Users\wbpra\Downloads\segymat-1.6\segymat-1.6', '-begin')
addpath ('C:\Users\\wbpra\Downloads\segymat-1.6\segymat-1.6\GUI', '-begin')
datadir =
'C:\Users\wbpra\OneDrive\Documents\2019\Projects\Axxis\Notionals\SEGY\Full
List\';

#
AJJ = 0
[Data1,SegyTraceHeaders,SegyHeader] =
ReadSegy(fullfile(datadir,'NFH_FFID_684457_Gun2.segy'));
AJJ = AJJ + 1
[Data2,SegyTraceHeaders,SegyHeader] =
ReadSegy(fullfile(datadir,'NFH_FFID_684457_Gun3.segy'));
AJJ = AJJ + 1
[Data3,SegyTraceHeaders,SegyHeader] =
ReadSegy(fullfile(datadir,'NFH_FFID_684457_Gun4.segy'));
AJJ = AJJ + 1
[Data4,SegyTraceHeaders,SegyHeader] =
ReadSegy(fullfile(datadir,'NFH_FFID_684457_Gun5.segy'));
AJJ = AJJ + 1

.
.
.

and so on for 1500 calls to ReadSegy

In this version, after 506 calls the program fails with the following error
message:


error: load: unable to open input file 'SegyMAT_Rev'
error: called from
    GetSegyHeaderBasics at line 34 column 5
    GetSegyHeader at line 91 column 15
    ReadSegy at line 269 column 15
    tull2 at line 1026 column 39

I think this may be a memory related problem.

I'm running Octave 5.1.0 and have SegyMat-1.6 loaded on a Windows 10
machine.

Any ideas?

Thanks

Bill




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