Re: [PATCH] gdb/testsuite: capture GDB tty name in default_gdb_spawn

[Simon Marchi <simon.marchi@polymtl.ca>]

> every time I do "make check-gdb" since this patch,
> I see a SIGSEGV in /usr/bin/expect at the end:
> 
> The symptoms are:
> 
> 		=== gdb Summary ===
> 
> # of expected passes		80145
> # of unexpected failures	867
> # of expected failures		72
> # of unknown successes		3
> # of known failures		121
> # of unresolved testcases	5
> # of untested testcases		41
> # of unsupported tests		257
> # of duplicate test names	100
> /home/ed/gnu/gdb-build-2/gdb/testsuite/../../gdb/gdb version  11.0.50.20210610-git -nw -nx -data-directory /home/ed/gnu/gdb-build-2/gdb/testsuite/../data-directory -iex "set height 0" -iex "set width 0" 
> 
> /bin/bash: line 1:  8471 Segmentation fault      (core dumped) runtest --status
> make[3]: *** [check-single] Error 139
> make[3]: Leaving directory `/home/ed/gnu/gdb-build-2/gdb/testsuite'
> make[2]: *** [check] Error 2
> make[2]: Leaving directory `/home/ed/gnu/gdb-build-2/gdb/testsuite'
> make[1]: *** [check] Error 2
> make[1]: Leaving directory `/home/ed/gnu/gdb-build-2/gdb'
> make: *** [check-gdb] Error 2
> 
> 
> the crash is always:
> 
> "expect -- /usr/share/dejagnu/runtest.exp --status"
> 
> crashed with SIGSEGV in Tcl_GetChannelName()
> 
> Do you have any idea what is wrong here, and how to fix it?

I don't know, probably an Expect bug?  Does it happen when running any
test or when running a specific test?

What version do you have?  For reference, I have:

 - expect 5.45.4
 - tcl 8.6.11
 - dejagnu 1.6.2

And I don't see that.

 Simon