[6.0][Runtime] Avoid dlsym of objc_isUniquelyReferenced. #73432
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We attempted to use the declaration if it exists, and fall back to dlsym. This didn't actually work and we always call dlsym. Include the right header (when available) and add a weak check to the direct call. rdar://127116080 (cherry picked from commit 4d62c52)
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Explanation: We want to directly reference |
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@swift-ci please test |
tbkka
approved these changes
May 6, 2024
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Cherry-pick #73285 to
release/6.0.We attempted to use the declaration if it exists, and fall back to dlsym. This didn't actually work and we always call dlsym. Include the right header (when available) and add a weak check to the direct call.
rdar://127116080