Re: AddressSanitizer reports a heap buffer overflow from skip_node_separator() on malformed info file

[Gavin Smith]

On Thu, May 06, 2021 at 10:09:04PM -0400, Nathaniel Beaver wrote:
> Steps to reproduce:
> Compile with -fsanitize=address, then run:
> 
> info -f reproduce_bug.info
> 
> Expected behavior:
> 
> info does not trigger AddressSanitizer errors.
> 
> Actual behavior:
> 
> AddressSanitizer reports a heap-buffer-overflow from skip_node_separator()
> in info/search.c:645
> 
> Comments:
> This file was generated by afl-fuzz and then hand-edited; I don't understand
> how it creates a heap buffer overflow.
> 
> Sincerely,
> 
> Nathaniel Beaver

I couldn't reproduce this.  First I tried with Valgrind which didn't
show any problems and then I tried compiling with -fsanitise=address which
also didn't show any problems.  Maybe it was fixed as part of the other
issue you sent.