Re: [boost] [thread] Testing with Sanitisers (ASAN, TSAN, MSAN)

Subject: Re: [boost] [thread] Testing with Sanitisers (ASAN, TSAN, MSAN)
From: Ben Pope (benpope81_at_[hidden])
Date: 2015-03-13 04:08:22

On Friday, March 13, 2015 04:01 PM, Ben Pope wrote:
> On Friday, March 13, 2015 02:54 PM, Vicente J. Botet Escriba wrote:
>> Le 13/03/15 07:49, Vicente J. Botet Escriba a écrit :
>>
>> Other report this issue
>>
>> WARNING: ThreadSanitizer: data race (pid=4677)
>> ....
>>
>>    Location is global 'std::__1::cout' of size 160 at 0x7f6d813c1b40
>> (libc++.so.1+0x0000002b8bd8)
>>
>>
>> See the full  report here [1].
>>
>> The test is using std::cout in a multi-threaded env.
>>
>> Is this telling that the standard library has a data race?
>
> std::cout isn't thread safe, is it?

Oh, I just checked... There shouldn't be a race, but the output may be 
garbled, which messes up the boost test log files (so you need to 
serialise access to BOOST_CHECK anyway).

I'm not currently linking the executables to a sanitised version of 
libc++, I'm not sure if that affects the reporting of the results, but 
I'll reduce it and confirm with clang dev list.

Ben