[libc++] Fix std::function's handling of blocks under Objc ARC
Previously, some uses of std::function with blocks would crash when ARC was enabled. rdar://100907096 Differential Revision: https://reviews.llvm.org/D135706
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dd9afdbb
Previously, some uses of std::function with blocks would crash when ARC was enabled. rdar://100907096 Differential Revision: https://reviews.llvm.org/D135706
mentioned in commit 68725091
·mentioned in commit 68725091