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[WebAssembly][Clang] _externref_t usage in global scope emits fatal error in backend #141011

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[WebAssembly][Clang] _externref_t usage in global scope emits fatal error in backend#141011
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backend:WebAssemblycrashPrefer [crash-on-valid] or [crash-on-invalid]Prefer [crash-on-valid] or [crash-on-invalid]llvm:SelectionDAGSelectionDAGISel as wellSelectionDAGISel as well
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Losy001
opened on May 22, 2025
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When targeting WASM, __externref_t emits a fatal error in the backend whenever it's used in global scope.

This error is reproduced here

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    backend:WebAssemblycrashPrefer [crash-on-valid] or [crash-on-invalid]Prefer [crash-on-valid] or [crash-on-invalid]llvm:SelectionDAGSelectionDAGISel as wellSelectionDAGISel as well

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