tables-generalized-struct.js

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// table.set in bounds with i32 x eqref - works, no value generated

// table.set with (ref null T) - works

// table.set with null - works

// table.set out of bounds - fails

    let ins = wasmEvalText(

        `(module

           (table (export "t") 10 eqref)

           (type $dummy (struct (field i32)))

           (func (export "set_eqref") (param i32) (param eqref)

             (table.set (local.get 0) (local.get 1)))

           (func (export "set_null") (param i32)

             (table.set (local.get 0) (ref.null eq)))

           (func (export "set_ref") (param i32) (param eqref)

             (table.set (local.get 0) (ref.cast (ref null $dummy) (local.get 1))))

           (func (export "make_struct") (result eqref)

             (struct.new $dummy (i32.const 37))))`);

    let a = ins.exports.make_struct();

    ins.exports.set_eqref(3, a);

    assertEq(ins.exports.t.get(3), a);

    ins.exports.set_null(3);

    assertEq(ins.exports.t.get(3), null);

    let b = ins.exports.make_struct();

    ins.exports.set_ref(5, b);

    assertEq(ins.exports.t.get(5), b);

    assertErrorMessage(() => ins.exports.set_eqref(10, a), WebAssembly.RuntimeError, /index out of bounds/);

    assertErrorMessage(() => ins.exports.set_eqref(-1, a), WebAssembly.RuntimeError, /index out of bounds/);

// table.grow on table of eqref with non-null ref value

    let ins = wasmEvalText(

        `(module

          (type $S (struct (field i32) (field f64)))

          (table (export "t") 2 eqref)

          (func (export "f") (result i32)

           (table.grow (struct.new $S (i32.const 0) (f64.const 3.14)) (i32.const 1))))`);

    assertEq(ins.exports.t.length, 2);

    assertEq(ins.exports.f(), 2);

    assertEq(ins.exports.t.length, 3);

    assertEq(typeof ins.exports.t.get(2), "object");