Boost
C++ Libraries
...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
This is an older version of Boost and was released in 2018. The current version is 1.89.0.
The bugs to be fixed have come from several sources.
One type of bug which has been very difficult to understand has been that some test cases failed when compiled with optimisation and not without it. I now believe that this is related to the use of references in the arguments passed back, and I have one test where the cure is demonstrated, lazy_make_pair_tests.