[Bug libstdc++/71945] Integer overflow in use counter of shared pointers

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71945
Bug 71945 depends on bug 121148, which changed state.

Bug 121148 Summary: Should use modular arithmetic for _Atomic_word
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121148

           What    |Removed                     |Added
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             Status|REOPENED                    |RESOLVED
         Resolution|---                         |FIXED