anchor.diff:  
   If we try to get more info about the backtrace that led to this crash we will see that there is not enough information available.
   
  -[source,bash]
  +[source]
   ----
   (gdb) bt
   #0  0x0000000000418b5e in ?? ()
  
positive.code: 
  Then start the application in `gdb` and execute `run`.
  
  [source,bash]
  ----
  gdb ./target/debugging-native-1.0.0-SNAPSHOT-runner
  ...
  
negative.code: We already see that `gdb` is able to tell us which method caused the crash and where it’s located in the source code.
  We can also get a backtrace of the call graph that led us to this state:
  
  [source]
  ----
  (gdb) bt
  #0  com.oracle.svm.core.UnmanagedMemoryUtil::copyLongsBackward(org.graalvm.word.Pointer *, org.graalvm.word.Pointer *, org.graalvm.word.UnsignedWord *) () at com/oracle/svm/core/UnmanagedMemoryUtil.java:169
  