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// Declared segments parse and validate
wasmFullPass(`
(module
(func $f1)
(elem declare func $f1)
(elem declare funcref (ref.null func))
(func $run)
(export "run" (func $run))
)
`);
// Declared segments can be used with externref
wasmFullPass(`
(module
(elem declare externref (ref.null extern))
(func $run)
(export "run" (func $run))
)
`);
// Declared segments cannot be used at runtime
{
let inst = wasmEvalText(`
(module
(func $f1)
(table 1 1 funcref)
(elem $e1 declare func $f1)
(func (export "testfn") (table.init $e1 (i32.const 0) (i32.const 0) (i32.const 1)))
)
`);
assertErrorMessage(() => inst.exports.testfn(), WebAssembly.RuntimeError, /index out of bounds/);
}
// Declared segments can be dropped, although this has no effect
wasmEvalText(`
(module
(func $f1)
(table 1 1 funcref)
(elem $e1 declare func $f1)
(func $start (elem.drop $e1) (elem.drop $e1))
(start $start)
)
`)
// Declared segments don't cause initialization of a table
wasmAssert(`
(module
(func $f1)
(table 1 1 funcref)
(elem declare func $f1)
(func $at (param i32) (result i32)
local.get 0
table.get 0
ref.is_null
)
(export "at" (func $at))
)
`, [{type: 'i32', func: '$at', args: ['i32.const 0'], expected: '1'}]);