--- !WASM
FileHeader:
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Sections:
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        ReturnType:      I64
        ParamTypes:
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    Imports:
      - Module:          env
        Field:           unused_undef_global
        Kind:            GLOBAL
        GlobalType:      I64
        GlobalMutable:   true
      - Module:          env
        Field:           used_undef_global
        Kind:            GLOBAL
        GlobalType:      I64
        GlobalMutable:   true
  - Type:            FUNCTION
    FunctionTypes:   [ 0 ]
  - Type:            CODE
    Functions:
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        Locals:
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    Relocations:
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        Index:           1
        Offset:          0x00000004
  - Type:            CUSTOM
    Name:            linking
    Version:         2
    SymbolTable:
      - Index:           0
        Kind:            GLOBAL
        Name:            unused_undef_global
        Flags:           [ VISIBILITY_HIDDEN, UNDEFINED ]
        Global:          0
      - Index:           1
        Kind:            GLOBAL
        Name:            used_undef_global
        Flags:           [ VISIBILITY_HIDDEN, UNDEFINED ]
        Global:          1
      - Index:           2
        Kind:            FUNCTION
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        Flags:           [ VISIBILITY_HIDDEN ]
        Function:        0
...