MATLAB R2019a - segmentation fault on call to readtable() function

Hello,

I am using MATLAB R2019a Update 5 on Ubuntu 14.04 LTS.

The following minimal reproducible code generates a segmentation fault error when run (from the command line, matlab -nosplash -nodesktop -r "minimal_ex"):

udp_file = "udp3DData.txt";

%% Setup the Import Options and import the data
opts = delimitedTextImportOptions("NumVariables", 7);

% Specify range and delimiter
opts.DataLines = [2, Inf];
opts.Delimiter = ",";

% Specify column names and types
opts.VariableNames = ["pktSizeB", "bitRatebps", "goodputbps", "loss", "avgLatencysec", "minLatencysec", "maxLatencysec"];
opts.VariableTypes = ["double", "double", "double", "double", "double", "double", "double"];

% Specify file level properties
opts.ExtraColumnsRule = "ignore";
opts.EmptyLineRule = "read";

readtable(udp_file, opts)

The file "udp3DData.txt" used is attached to this post.

The same code runs fine on MATLAB R2020b (which is not supported on Ubuntu 14.04).

Follows the stacktrace of the crash.

MATLAB crash file:/home/take/matlab_crash_dump.35971-1:


--------------------------------------------------------------------------------
       Segmentation violation detected at Wed Nov 25 17:32:12 2020 +0100
--------------------------------------------------------------------------------

Configuration:
  Crash Decoding           : Disabled - No sandbox or build area path
  Crash Mode               : continue (default)
  Default Encoding         : US-ASCII
  Deployed                 : false
  GNU C Library            : 2.19 stable
  Graphics Driver          : Unknown software 
  Graphics card 1          : 0x15ad ( 0x15ad ) 0x405 Version 0.0.0.0 (0-0-0)
  Java Version             : Java 1.8.0_181-b13 with Oracle Corporation Java HotSpot(TM) 64-Bit Server VM mixed mode
  MATLAB Architecture      : glnxa64
  MATLAB Entitlement ID    : 4933785
  MATLAB Root              : /usr/local/MATLAB/R2019a
  MATLAB Version           : 9.6.0.1174912 (R2019a) Update 5
  OpenGL                   : software
  Operating System         : Ubuntu 14.04.5 LTS
  Process ID               : 35971
  Processor ID             : x86 Family 6 Model 63 Stepping 0, GenuineIntel
  Session Key              : 2cec26a0-e43b-4823-a5fb-7309190e0159
  Static TLS mitigation    : Enabled: Full
  Window System            : The X.Org Foundation (12009000), display localhost:12.0

Fault Count: 1


Abnormal termination:
Segmentation violation

Register State (from fault):
  RAX = 0000000000000046  RBX = 000000000000047c
  RCX = 0000000000000046  RDX = 00007f299bfef1d0
  RSP = 00007f299bfef150  RBP = 00007f299bfef150
  RSI = 0000000000000046  RDI = ffffffffffffffff

   R8 = 0000000000000000   R9 = 00007f299bfef1d0
  R10 = 00007f299a986422  R11 = 00007f29b669d310
  R12 = 00007f2850e4c4d0  R13 = 00007f2992fc0e50
  R14 = 00000000d52f1608  R15 = 0000000000000046

  RIP = 00007f28e97b7b11  EFL = 0000000000010202

   CS = 0033   FS = 0000   GS = 0000

Stack Trace (from fault):
[  0] 0x00007f28e97b7b11 /usr/local/MATLAB/R2019a/sys/java/jre/glnxa64/jre/lib/amd64/libzip.so+00072465
[  1] 0x00007f28e97b8c09 /usr/local/MATLAB/R2019a/sys/java/jre/glnxa64/jre/lib/amd64/libzip.so+00076809
[  2] 0x00007f28e97a9e90 /usr/local/MATLAB/R2019a/sys/java/jre/glnxa64/jre/lib/amd64/libzip.so+00016016 Java_java_util_zip_ZipFile_getEntry+00000240
[  3] 0x00007f28d13b22a5                                   <unknown-module>+00000000
[  4] 0x00007f28d14bdb98                                   <unknown-module>+00000000

Any help is appreciated.

EDIT: It looks like upgrading to MATLAB R2019b Update 7 solved this issue.

[Fred Wagen]

Just in case ... no problem on a Mac (CATALINA) with MATLAB 2019b (or 2020b)