Re: GDB 12.0.90 available for testing

[Pedro Alves <pedro@palves.net>]

On 2022-03-31 12:58, Eli Zaretskii wrote:
>> Date: Thu, 31 Mar 2022 10:44:21 +0100
>> Cc: gdb-patches@sourceware.org
>> From: Pedro Alves <pedro@palves.net>

>> This is not really a failure, it's just a warning, though the message
>> gdb prints sounds scary.  I chatted with Tromey about it last week, and the
>> issue is that there's a unit test that always exercises a symbol with a
>> latin-1 character (0xff).  I added that testcase originally, and IIRC, that
>> was about making sure that the name lookup index was able to sort
>> strings properly with the 0xff character, because the code
>> does "ch+1" at some point in the sorting/lookup algorithm, which overflows
>> in that case.
>>
>> It may be that fix is to make the unit test temporarily set the
>> host charset, and also to remove that "should not happen" warning, as
>> I think that it should be possible to come up with such symbol names
>> with escape codes, thus it's not always really a bug.
> 
> Does this test fail on GNU/Linux?  If not, can you (or someone else)
> tell what is the difference between GNU/Linux and Windows for this
> purpose?  Neither is using Latin-1 as the default host charset, right?

I see the same warning on GNU/Linux, just different host encoding:

(gdb) maint selftest 
...
Running selftest dw2_expand_symtabs_matching.
warning: could not convert 'yfunc�' from the host encoding (UTF-8) to UTF-32.
This normally should not happen, please file a bug report.
warning: charset conversion failure for 'yfunc�'.
You may have the wrong value for 'set ada source-charset'.
...
Ran 145 unit tests, 0 failed
(gdb) 

Note the "0 failed" at the end.  I assume you get that too?  That's what I mean
by "this is not really a failure, it's just a warning".

> 
>> But in nutshell, this isn't really a GDB bug, and it shouldn't block the release.
> 
> I didn't want to imply that the release should be blocked.  I'm just
> trying to use the pretest for what i's intended: to find bugs and fix
> them, preferably before the release.

Understood.