gistfile1.txt

 % ./mkmrb.sh samples/class.rb
=================================================================
==1294==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x22e068e9 at pc 0x004b32bb bp 0xffbfe4cc sp 0xffbfe0a8
WRITE of size 8 at 0x22e068e9 thread T0
    #0 0x4b32ba in __asan_memcpy /usr/src/contrib/llvm-project/compiler-rt/lib/asan/asan_interceptors_memintrinsics.cpp:22:3
    #1 0x534f13 in write_footer /usr/home/hiroki/rtlbm-mruby/mruby/src/dump.c:358:3
    #2 0x52ce88 in dump_irep /usr/home/hiroki/rtlbm-mruby/mruby/src/dump.c:858:3
    #3 0x52d454 in mrb_dump_irep_binary /usr/home/hiroki/rtlbm-mruby/mruby/src/dump.c:890:12
    #4 0x52af12 in dump_file /usr/home/hiroki/rtlbm-mruby/mruby/mrbgems/mruby-bin-mrbc/tools/mrbc/mrbc.c:263:9
    #5 0x52678a in main /usr/home/hiroki/rtlbm-mruby/mruby/mrbgems/mruby-bin-mrbc/tools/mrbc/mrbc.c:333:12
    #6 0x4ab055 in _start1 /usr/src/lib/csu/i386/crt1_c.c:73:7
    #7 0x4aaf27 in _start /usr/src/lib/csu/i386/crt1_s.S:49

0x22e068e9 is located 0 bytes to the right of 1129-byte region [0x22e06480,0x22e068e9)
allocated by thread T0 here:
    #0 0x50eed4 in realloc /usr/src/contrib/llvm-project/compiler-rt/lib/asan/asan_malloc_linux.cpp:164:3
    #1 0x6710b5 in mrb_default_allocf /usr/home/hiroki/rtlbm-mruby/mruby/src/state.c:68:12
    #2 0x53ee2c in mrb_realloc_simple /usr/home/hiroki/rtlbm-mruby/mruby/src/gc.c:221:8
    #3 0x53fb13 in mrb_realloc /usr/home/hiroki/rtlbm-mruby/mruby/src/gc.c:235:8
    #4 0x53fd32 in mrb_malloc /usr/home/hiroki/rtlbm-mruby/mruby/src/gc.c:251:10
    #5 0x52c7cc in dump_irep /usr/home/hiroki/rtlbm-mruby/mruby/src/dump.c:827:26
    #6 0x52d454 in mrb_dump_irep_binary /usr/home/hiroki/rtlbm-mruby/mruby/src/dump.c:890:12
    #7 0x52af12 in dump_file /usr/home/hiroki/rtlbm-mruby/mruby/mrbgems/mruby-bin-mrbc/tools/mrbc/mrbc.c:263:9
    #8 0x52678a in main /usr/home/hiroki/rtlbm-mruby/mruby/mrbgems/mruby-bin-mrbc/tools/mrbc/mrbc.c:333:12
    #9 0x4ab055 in _start1 /usr/src/lib/csu/i386/crt1_c.c:73:7
    #10 0x4aaf27 in _start /usr/src/lib/csu/i386/crt1_s.S:49

SUMMARY: AddressSanitizer: heap-buffer-overflow /usr/src/contrib/llvm-project/compiler-rt/lib/asan/asan_interceptors_memintrinsics.cpp:22:3 in __asan_memcpy
Shadow bytes around the buggy address:
  0x445c0cc0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x445c0cd0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x445c0ce0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x445c0cf0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x445c0d00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x445c0d10: 00 00 00 00 00 00 00 00 00 00 00 00 00[01]fa fa
  0x445c0d20: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x445c0d30: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x445c0d40: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x445c0d50: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x445c0d60: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
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
  Shadow gap:              cc
==1294==ABORTING
Generate image successfully, length=2, checksum=0x0