[Cherry-pick into swift/release/5.10] Lazy-initialize Swift runtime in backwards interop synth provider. #7601
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adrian-prantl
commented
Oct 9, 2023
adrian-prantl
commented
Otherwise the Swift runtime and scratch context will be initialized in any process that contains C++ struct types, which costs performance and produces spurious warnings if no Swift runtime is available. rdar://116533409 (cherry picked from commit 3bce4a2)
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