System information

• Have I written custom code (as opposed to using a stock example script provided in TensorFlow): yes
• OS Platform and Distribution (e.g., Linux Ubuntu 16.04):
  macOS 10.13.3
  JRE version: Java(TM) SE Runtime Environment (8.0_121-b13) (build 1.8.0_121-b13)
• TensorFlow installed from (source or binary): maven

    <dependency>
      <groupId>org.tensorflow</groupId>
      <artifactId>tensorflow</artifactId>
      <version>1.4.0</version>
    </dependency>

• TensorFlow version (use command below): 1.4.0
• Python version: N/A
• Bazel version (if compiling from source): N/A
• GCC/Compiler version (if compiling from source): N/A
• CUDA/cuDNN version: N/A
• GPU model and memory: N/A
• Exact command to reproduce:

    // JUnit test case
    public void testSigSegv() {
        byte[][] bb = new byte[3][];  // note: new byte[3][1] doesn't crash, presumably it is initialized by the compile

        bb[0] = new byte[] { 0 };
        bb[1] = new byte[] { 1 };
        // no bb[2]

        // next line sigsegv's
        Tensors.create(bb);
    }

Describe the problem

Using Tensors.create to get a Tensor<String> from an uninitialized 2D byte array (byte[][]) results in a SIGSEGV from JNI. See full log below.

Source code / logs

When running the above test case, I get the following output.

#
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x000000010571f0b3, pid=30179, tid=0x0000000000001a03
#
# JRE version: Java(TM) SE Runtime Environment (8.0_121-b13) (build 1.8.0_121-b13)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.121-b13 mixed mode bsd-amd64 compressed oops)
# Problematic frame:
# V  [libjvm.dylib+0x31f0b3]
#
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
# An error report file with more information is saved as:
# /Users/ben/AGLabs/nfl/JavaProjects/nlp/hs_err_pid30179.log
#
# If you would like to submit a bug report, please visit:
#   http://bugreport.java.com/bugreport/crash.jsp
#

Process finished with exit code 134 (interrupted by signal 6: SIGABRT)

I'm not familiar enough with JNI in general to know if I'm expecting too much. I won't be surprised if you mark this wontfix, I was just surprised to be able to crash the process with a segfault given some bad data. Easy enough to work around (I will size/init my arrays more carefully) but thought you might want to know.

Cheers! Thanks so much for this library!