[PATCH] shared_ptr : atomic ref-counts (TSan)

[Marshall Clow]

> 1. Are there means to evolve the ABI?


I started a discussion about this a month or so ago, but it petered out w/o a conclusion.
There are users of libc++ for whom *any* ABI change is unacceptable.
There are also users of libc++ who (as you say), "build the world from scratch" regularly, for whom ABI change is a non-issue.

We need a scheme that satisfies the first group w/o limiting the second.

As for this change, would "fixing" the load on line #102 fix the observed problem?


http://reviews.llvm.org/D8147

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