Re: SIGABRT in text_buffer_iconv on malformed input file

[Gavin Smith]

On Mon, May 25, 2020 at 01:42:10PM -0400, Nathaniel Beaver wrote:
> Steps to reproduce:
> 
> $ info -f ./bug_sigabrt.info
> gconv.c:73: __gconv: Assertion `outbuf != NULL && *outbuf != NULL' failed.
> Aborted (core dumped)
> 
> Expected behavior:
> 
> info shows an error and exits cleanly.
> 
> Actual behavior:
> 
> info exits with SIGABRT
> 
> Discussion:
> 
> This file was generated by afl-fuzz and then hand-edited. I do not claim to
> understand how it triggers the bug in texinfo.

Thanks for testing this.

I'll take a look at it some time as well as your other report, but I 
wonder if it is possible for you to compile with -O0 to avoid the 
backtrace having many values which are "optimized out."