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// |jit-test| skip-if: !wasmGcEnabled()
// br_on_null from constant
wasmValidateText(`(module
(func
ref.null extern
br_on_null 0
drop
)
)`);
// br_on_null from parameter
wasmValidateText(`(module
(func (param externref)
local.get 0
br_on_null 0
drop
)
)`);
// br_on_null with single result
wasmValidateText(`(module
(func (result i32)
i32.const 0
ref.null extern
br_on_null 0
drop
)
)`);
// br_on_null with multiple results
wasmValidateText(`(module
(func (result i32 i32 i32)
i32.const 0
i32.const 1
i32.const 2
ref.null extern
br_on_null 0
drop
)
)`);
// Test the branch takes the correct path and results are passed correctly
let {isNull} = wasmEvalText(`(module
(func (export "isNull") (param externref) (result i32)
i32.const 1
local.get 0
br_on_null 0
drop
drop
i32.const 0
)
)`).exports;
assertEq(isNull(null), 1, `null is null`);
for (let val of WasmNonNullExternrefValues) {
assertEq(isNull(val), 0, `${typeof(val)} is not null`);
}