[PATCH 5/5] [gdb/symtab] Fix data race on per_cu->lang

[Tom de Vries]

On 7/5/22 17:19, Tom de Vries wrote:
> On 7/4/22 20:30, Tom Tromey wrote:
>>>>>>> "Tom" == Tom de Vries <tdevries@suse.de> writes:
>> Tom> Fix this by guarding the write with a lock.
>>
>> I would rather we avoid locks.  Ideally the existing exclusion mechanism
>> should be made to work, but if that fails, perhaps we can use another
>> atomic.
> 
> I gave a different approach a try: eliminating the field.
> 
> That seems to work reasonably well, apart from one specific usage that I 
> disabled (mentioned in commit message).
> 

Hmm, that same piece of code is where I run into 
https://sourceware.org/bugzilla/show_bug.cgi?id=29321 .  And, it's a 
piece of code from a commit where I added per_cu->lang/unit_type.  So, 
this starts to look like the actual cause of problems.

Thanks,
- Tom

> I'm not sure this is a good idea though, but I thought I could at least 
> post it.  Currently testing.
> 
> Thanks,
> - Tom
>