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// |jit-test| --setpref=wasm_gc=true; skip-if: !wasmGcEnabled()
var ins = wasmEvalText(`(module
(type $t (func (param i64 i64 funcref) (result i64)))
(elem declare func $fac-acc $fac-acc-broken)
(func $fac-acc (export "fac-acc") (param i64 i64 funcref) (result i64)
(if (result i64) (i64.eqz (local.get 0))
(then (local.get 1))
(else
(return_call $vis
(i64.sub (local.get 0) (i64.const 1))
(i64.mul (local.get 0) (local.get 1))
(local.get 2)
)
)
)
)
;; same as $fac-acc but fails on i == 6
(func $fac-acc-broken (param i64 i64 funcref) (result i64)
(if (result i64) (i64.eqz (local.get 0))
(then (local.get 1))
(else
(return_call $vis
(i64.sub (local.get 0) (i64.const 1))
(i64.mul (local.get 0) (local.get 1))
(select (result funcref)
(ref.null func) (local.get 2)
(i64.eq (local.get 0) (i64.const 6)))
)
)
)
)
(func $vis (export "vis") (param i64 i64 funcref) (result i64)
local.get 0
local.get 1
local.get 2
local.get 2
ref.cast (ref null $t)
return_call_ref $t
)
(func $trap (export "trap") (param i64 i64 funcref) (result i64)
unreachable
)
(func (export "main") (param i64) (result i64)
(call $vis (local.get 0) (i64.const 1) (ref.func $fac-acc))
)
(func (export "main_null") (param i64) (result i64)
(return_call $vis (local.get 0) (i64.const 1) (ref.null $t))
)
(func (export "main_broken") (param i64) (result i64)
(return_call $vis (local.get 0) (i64.const 1) (ref.func $fac-acc-broken))
)
)`);
// Check return call via wasm function
assertEq(ins.exports.main(5n), 120n);
// Check return call directly via interpreter stub
const fac = ins.exports["fac-acc"];
const vis = ins.exports["vis"];
assertEq(vis(4n, 1n, fac), 24n);
// Calling into JavaScript (and back).
if ("Function" in WebAssembly) {
const visFn = new WebAssembly.Function({
parameters: ["i64", "i64", "funcref"],
results: ["i64"]
}, function (i, n, fn) {
if (i <= 0n) {
return n;
}
return vis(i - 1n, i * n, fn);
});
assertEq(vis(3n, 1n, visFn), 6n);
}
// Check return call directly via jit stub
check_stub1: {
let options = getJitCompilerOptions();
if (!options["baseline.enable"]) break check_stub1;
const check = function() {
vis(4n, 1n, fac);
};
for (let i = options["baseline.warmup.trigger"] + 1; i--;)
check();
}
// Handling traps.
const trap = ins.exports["trap"];
assertErrorMessage(() => vis(4n, 1n, trap), WebAssembly.RuntimeError, /unreachable executed/);
const main_broken = ins.exports["main_broken"];
assertErrorMessage(() => main_broken(8n), WebAssembly.RuntimeError, /dereferencing null pointer/);
const main_null = ins.exports["main_null"];
assertErrorMessage(() => main_null(5n), WebAssembly.RuntimeError, /dereferencing null pointer/);
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