A Segmentation fault in dmg2img.c:237

[seviezhou]

System info

Ubuntu X64, gcc (Ubuntu 5.5.0-12ubuntu1), dmg2img (latest master f16f24)

Command line

./dmg2img -i ./SEGV-dmg2img-237 -o /dev/null

Output

Segmentation fault

AddressSanitizer output

ASAN:SIGSEGV
=================================================================
==10882==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x7efc257f513d bp 0x000000000000 sp 0x7ffc51c0a3c8 T0)
    #0 0x7efc257f513c  (/lib/x86_64-linux-gnu/libc.so.6+0xaa13c)
    #1 0x402f31 in main /home/seviezhou/dmg2img/dmg2img.c:237
    #2 0x7efc2576b83f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2083f)
    #3 0x407fe8 in _start (/home/seviezhou/dmg2img/dmg2img+0x407fe8)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV ??:0 ??
==10882==ABORTING

POC

SEGV-dmg2img-237.zip