Invalid memory read access in get_tags_of_indirect_tags_table()

[Hanno Böck]

The attached file will cause an invalid memory read, leading to a
segfault.

Here's a stack trace from address sanitizer:
==2482==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 
0x0000005460e6 bp 0x7ffd9fec9e30 sp 0x7ffd9fec9c20 T0)
==2482==The signal is caused by a READ memory access.
==2482==Hint: address points to the zero page.
    #0 0x5460e5 in get_tags_of_indirect_tags_table 
/f/texinfo/trunk/info/nodes.c:461:37
    #1 0x5460e5 in build_tags_and_nodes /f/texinfo/trunk/info/nodes.c:139
    #2 0x549462 in info_load_file /f/texinfo/trunk/info/nodes.c:757:5
    #3 0x548c6d in info_find_file /f/texinfo/trunk/info/nodes.c:667:17
    #4 0x54a593 in info_get_node_with_defaults 
/f/texinfo/trunk/info/nodes.c:990:19
    #5 0x56de62 in dump_node_to_stream /f/texinfo/trunk/info/session.c:3764:10
    #6 0x56db32 in dump_nodes_to_file /f/texinfo/trunk/info/session.c:3727:11
    #7 0x531e19 in main /f/texinfo/trunk/info/info.c:1073:7
    #8 0x7fb742a3078f in __libc_start_main (/lib64/libc.so.6+0x2078f)
    #9 0x41a598 in _start (/old-ram1/texinfo/ginfo+0x41a598)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV /f/texinfo/trunk/info/nodes.c:461:37 in 
get_tags_of_indirect_tags_table
==2482==ABORTING


-- 
Hanno Böck
https://hboeck.de/

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invalid-memory-read-get_tags_of_indirect_tags_table.info
Description: Binary data