Public bug reported:

I spotted another (double) null pointer dereference in main().

Look at this snippet:

++partnum;
partname_begin = strstr(data_begin, name_key);
partname_begin = strstr(partname_begin, name_begin) + strlen(name_begin);
partname_end = strstr(partname_begin, name_end);

The results of the strstr calls are not checked against NULL.

** Affects: dmg2img (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1835465

Title:
  Another null ptr deref in main()

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