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Sale Djenic
99c95234d9
On iOS, Nim builds --app:staticlib, so the .a ships bitcode, and the actual LTO + codegen happens at Xcode's final link.
ThinLTO is aggressive about cross-module optimization, and it occasionally miscompiles code with subtle semantics.
The exact pattern that's failing — Nim's ORC move/destructor handling around std/json's ref-based JsonNode built
via %* (a newJObject() followed by a run of OrderedTable inserts) — is a classic place for an over-eager optimizer to
wrongly drop the populated temporary or elide the inserts, yielding an empty {}.