=================================================================
==25427==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x603000000030 at pc 0x00000050cad3 bp 0x7ffceba1fbb0 sp 0x7ffceba1fba8
READ of size 4 at 0x603000000030 thread T0
    #0 0x50cad2 in dump /home/hongxu/tests/jsmn/example/jsondump.c:33:9
    #1 0x50ca00 in dump /home/hongxu/tests/jsmn/example/jsondump.c:46:9
    #2 0x50bed3 in main /home/hongxu/tests/jsmn/example/jsondump.c:120:4
    #3 0x7fabab0cf1c0 in __libc_start_main /build/glibc-itYbWN/glibc-2.26/csu/../csu/libc-start.c:308
    #4 0x41c5d9 in _start (/home/hongxu/tests/jsmn/jsondump+0x41c5d9)

0x603000000030 is located 0 bytes to the right of 32-byte region [0x603000000010,0x603000000030)
allocated by thread T0 here:
    #0 0x4d1c20 in malloc (/home/hongxu/tests/jsmn/jsondump+0x4d1c20)
    #1 0x50bba6 in main /home/hongxu/tests/jsmn/example/jsondump.c:79:8
    #2 0x7fabab0cf1c0 in __libc_start_main /build/glibc-itYbWN/glibc-2.26/csu/../csu/libc-start.c:308

SUMMARY: AddressSanitizer: heap-buffer-overflow /home/hongxu/tests/jsmn/example/jsondump.c:33:9 in dump
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 fa fa fa 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
==25427==ABORTING