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==15833==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x6020000429f6 at pc 0x55571a3caf51 bp 0x7ffdbabfd5f0 sp 0x7ffdbabfd5e0
READ of size 1 at 0x6020000429f6 thread T0
    #0 0x55571a3caf50 in re_search_internal /home/ben/Programoj/texinfo-6.8/gnulib/lib/regexec.c:764
    #1 0x55571a3c88d8 in rpl_regexec /home/ben/Programoj/texinfo-6.8/gnulib/lib/regexec.c:219
    #2 0x55571a37a8f3 in extend_matches /home/ben/Programoj/texinfo-6.8/info/search.c:142
    #3 0x55571a37b1cf in regexp_search /home/ben/Programoj/texinfo-6.8/info/search.c:214
    #4 0x55571a38dfcd in info_search_in_node_internal /home/ben/Programoj/texinfo-6.8/info/session.c:3956
    #5 0x55571a38ed01 in info_search_internal /home/ben/Programoj/texinfo-6.8/info/session.c:4087
    #6 0x55571a392477 in info_search_next /home/ben/Programoj/texinfo-6.8/info/session.c:4688
    #7 0x55571a37e9b3 in info_read_and_dispatch /home/ben/Programoj/texinfo-6.8/info/session.c:252
    #8 0x55571a37e797 in info_session /home/ben/Programoj/texinfo-6.8/info/session.c:220
    #9 0x55571a365a26 in main /home/ben/Programoj/texinfo-6.8/info/info.c:1079
    #10 0x7fca41f5bbf6 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21bf6)
    #11 0x55571a3457e9 in _start (/usr/local/bin/info+0x237e9)

0x6020000429f6 is located 0 bytes to the right of 6-byte region [0x6020000429f0,0x6020000429f6)
allocated by thread T0 here:
    #0 0x7fca42633f30 in realloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xdef30)
    #1 0x55571a3a8c0e in re_string_realloc_buffers /home/ben/Programoj/texinfo-6.8/gnulib/lib/regex_internal.c:168
    #2 0x55571a3a82e9 in re_string_allocate /home/ben/Programoj/texinfo-6.8/gnulib/lib/regex_internal.c:61
    #3 0x55571a3ca27b in re_search_internal /home/ben/Programoj/texinfo-6.8/gnulib/lib/regexec.c:636
    #4 0x55571a3c88d8 in rpl_regexec /home/ben/Programoj/texinfo-6.8/gnulib/lib/regexec.c:219
    #5 0x55571a37a8f3 in extend_matches /home/ben/Programoj/texinfo-6.8/info/search.c:142
    #6 0x55571a37b1cf in regexp_search /home/ben/Programoj/texinfo-6.8/info/search.c:214
    #7 0x55571a38dfcd in info_search_in_node_internal /home/ben/Programoj/texinfo-6.8/info/session.c:3956
    #8 0x55571a38ed01 in info_search_internal /home/ben/Programoj/texinfo-6.8/info/session.c:4087
    #9 0x55571a392477 in info_search_next /home/ben/Programoj/texinfo-6.8/info/session.c:4688
    #10 0x55571a37e9b3 in info_read_and_dispatch /home/ben/Programoj/texinfo-6.8/info/session.c:252
    #11 0x55571a37e797 in info_session /home/ben/Programoj/texinfo-6.8/info/session.c:220
    #12 0x55571a365a26 in main /home/ben/Programoj/texinfo-6.8/info/info.c:1079
    #13 0x7fca41f5bbf6 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21bf6)

SUMMARY: AddressSanitizer: heap-buffer-overflow /home/ben/Programoj/texinfo-6.8/gnulib/lib/regexec.c:764 in re_search_internal
Shadow bytes around the buggy address:
  0x0c04800004e0: fa fa fd fa fa fa fd fd fa fa fd fa fa fa fd fa
  0x0c04800004f0: fa fa fd fd fa fa fd fa fa fa fd fd fa fa fd fa
  0x0c0480000500: fa fa fd fa fa fa fd fd fa fa fd fa fa fa 04 fa
  0x0c0480000510: fa fa fd fa fa fa fd fd fa fa fd fa fa fa fd fa
  0x0c0480000520: fa fa 00 fa fa fa 00 fa fa fa 00 fa fa fa fd fa
=>0x0c0480000530: fa fa 00 fa fa fa 00 fa fa fa 00 00 fa fa[06]fa
  0x0c0480000540: fa fa fd fa fa fa fd fd fa fa 00 fa fa fa 00 fa
  0x0c0480000550: fa fa 00 00 fa fa fd fa fa fa fd fd fa fa 00 fa
  0x0c0480000560: fa fa 00 fa fa fa 00 00 fa fa fa fa fa fa fa fa
  0x0c0480000570: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c0480000580: 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
==15833==ABORTING