When running class-dump build with ASan, the following errors are reported:
==67822==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x6030000095a0 at pc 0x0001068b4d2d bp 0x7fff595270b0 sp 0x7fff59526860
READ of size 16 at 0x6030000095a0 thread T0
#0 0x1068b4d2c in __asan_memcpy (libclang_rt.asan_osx_dynamic.dylib+0x40d2c)
#1 0x106716ed4 in -CDLCSegment initWithDataCursor:
#2 0x10672d82b in +CDLoadCommand loadCommandWithDataCursor:

Created pull request https://github.com/nygard/class-dump/pull/65 to fix this in upstream repository.