bug:越界访问导致ERROR: AddressSanitizer: heap-buffer-overflow on address

==30==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x603000000054 at pc 0x00000040d6e7 bp 0x7fffd87fd2f0 sp 0x7fffd87fd2e8
READ of

越界访问了，注意数组等的边界，len-1

 

 

 

 

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==30==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x603000000054 at pc 0x00000040d6e7 bp 0x7fffd87fd2f0 sp 0x7fffd87fd2e8
READ of size 4 at 0x603000000054 thread T0
    #1 0x7f96f8e952e0 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x202e0)

0x603000000054 is located 0 bytes to the right of 20-byte region [0x603000000040,0x603000000054)
allocated by thread T0 here:
    #0 0x7f96fa8bace0 in operator new(unsigned long) (/usr/local/lib64/libasan.so.5+0xe9ce0)
    #2 0x7f96f8e952e0 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x202e0)

Shadow bytes around the buggy address:
  0x0c067fff7fb0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c067fff7fc0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c067fff7fd0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c067fff7fe0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c067fff7ff0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x0c067fff8000: fa fa 00 00 00 00 fa fa 00 00[04]fa fa fa fa fa
  0x0c067fff8010: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c067fff8020: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c067fff8030: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c067fff8040: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c067fff8050: fa fa fa fa fa fa fa fa fa fa fa fa fa fa 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
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  Stack after return:      f5
  Stack use after scope:   f8
  Global redzone:          f9
  Global init order:       f6
  Poisoned by user:        f7
  Container overflow:      fc
  Array cookie:            ac
  Intra object redzone:    bb
  ASan internal:           fe
  Left alloca redzone:     ca
  Right alloca redzone:    cb
==30==ABORTING

 

如何利用Sanitizer解决Android开发中遇到的Bug?