bug1678785.js - mozsearch

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// This exposed a bug in CL's aarch64 isel, in which the -4098 was

// incorrectly sign-extended out to 64 bits.

let { exports } = new WebAssembly.Instance(new WebAssembly.Module(

    wasmTextToBinary(`

      (module

        (type (;0;) (func))

        (type (;1;) (func (result i32)))

        (type (;2;) (func (result i64)))

        (func (;0;) (type 0)

          i32.const -4098

          i32.load16_s offset=1

          drop)

        (memory (;0;) 1)

        (export "g" (func 0)))` )));

try {

    exports.g();

} catch (e) {}