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==3221==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x60300000e9ac at pc 0x742282 bp 0x7fffbe3173b0 sp 0x7fffbe3173a0
READ of size 4 at 0x60300000e9ac thread T0
    #0 0x742281 in archive_read_format_tar_read_header libarchive/archive_read_support_format_tar.c:520
    #1 0x4b3c63 in _archive_read_next_header2 libarchive/archive_read.c:645
    #2 0x4b3c63 in _archive_read_next_header libarchive/archive_read.c:685
    #3 0x42a29a in read_archive tar/read.c:252
    #4 0x42d6d2 in tar_mode_x tar/read.c:104
    #5 0x414a3f in main tar/bsdtar.c:805
    #6 0x7f40e4a8cf9f in __libc_start_main (/lib64/libc.so.6+0x1ff9f)
    #7 0x41a5cd (/mnt/ram/libarchive/bsdtar+0x41a5cd)

0x60300000e9ac is located 4 bytes to the left of 32-byte region [0x60300000e9b0,0x60300000e9d0)
allocated by thread T0 here:
    #0 0x7f40e723b9d6 in __interceptor_realloc (/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.2/libasan.so.1+0x579d6)
    #1 0x83e418 in archive_string_ensure libarchive/archive_string.c:311
    #2 0x83e418 in archive_wstring_ensure libarchive/archive_string.c:263
    #3 0x83e418 in archive_wstring_append_from_mbs libarchive/archive_string.c:599

SUMMARY: AddressSanitizer: heap-buffer-overflow libarchive/archive_read_support_format_tar.c:520 archive_read_format_tar_read_header
Shadow bytes around the buggy address:
  0x0c067fff9ce0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c067fff9cf0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c067fff9d00: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c067fff9d10: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c067fff9d20: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
=>0x0c067fff9d30: fa fa fa fa fa[fa]00 00 00 00 fa fa 00 00 00 00
  0x0c067fff9d40: fa fa 00 00 00 00 fa fa 00 00 00 00 fa fa fd fd
  0x0c067fff9d50: fd fd fa fa fd fd fd fd fa fa fd fd fd fd fa fa
  0x0c067fff9d60: fd fd fd fd fa fa fd fd fd fd fa fa fd fd fd fd
  0x0c067fff9d70: fa fa fd fd fd fd fa fa fd fd fd fd fa fa fd fd
  0x0c067fff9d80: fd fd fa fa fd fd fd fd fa fa fd fd fd fd fa fa
Shadow byte legend (one shadow byte represents 8 application bytes):
  Addressable:           00
  Partially addressable: 01 02 03 04 05 06 07 
  Heap left redzone:       fa
  Heap right redzone:      fb
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  Stack partial redzone:   f4
  Stack after return:      f5
  Stack use after scope:   f8
  Global redzone:          f9
  Global init order:       f6
  Poisoned by user:        f7
  Contiguous container OOB:fc
  ASan internal:           fe
==3221==ABORTING