test: Add ios_base::width tsan suppression #23370

1. 
   hebasto commented at 8:44 am on October 27, 2021: member

   This PR:

   • adds tsan suppression for intermittent failures in CI

   0SUMMARY: ThreadSanitizer: data race /usr/lib/llvm-12/bin/../include/c++/v1/ios:523:12 in std::__1::ios_base::width() const
   

   • fixes #23366
2. test: Add ios_base::width tsan suppression 96c7db9373
3. hebasto added the label Tests on Oct 27, 2021
4. 
   shaavan commented at 12:26 pm on October 27, 2021: contributor

   Concept ACK

   TSan suppression looks like the right thing to do for now. But as @ryanofsky mentioned here, we have to take a look into the source of this error and make sure that suppressing this error might not cause a significant problem in the future.

5. 
   laanwj commented at 12:18 pm on November 10, 2021: member

   Concept and code review ACK 96c7db9373014ce232ab01d11333650c9ddf9ee5 (I think adding a surpression deep inside the C++ library is somewhat scary, but the explanation in @ryanofsky ’s comment makes it clearer)
6. laanwj merged this on Nov 10, 2021
7. laanwj closed this on Nov 10, 2021

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8. hebasto deleted the branch on Nov 10, 2021
9. sidhujag referenced this in commit 6d02f3b61f on Nov 10, 2021
10. DrahtBot locked this on Nov 10, 2022

Contributors
hebasto shaavan laanwj

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Tests