golang loop error with a sum wasm function

[andyxning]

Thanks for the bug report!

// wasm.go

package main

import "fmt"
import "github.com/wasmerio/wasmer-go/wasmer"

func native_sum(i uint32, j uint32) (sum uint32) {
	return i + j
}

var wasmer_sum_func = func() wasmer.NativeFunction {
	// Let's assume we don't have WebAssembly bytes at hand. We
	// will write WebAssembly manually.
	wasmBytes := []byte(`
	(module
  (func $add (param $lhs i64) (param $rhs i64) (result i64)
    local.get $lhs
    local.get $rhs
    i64.add)
  (memory 65535)
  (export "sum" (func $add))
)
`)

	// Create an Engine
	engine := wasmer.NewEngine()

	// Create a Store
	store := wasmer.NewStore(engine)

	// Let's compile the module.
	module, err := wasmer.NewModule(store, wasmBytes)

	if err != nil {
		fmt.Println("Failed to compile module:", err)
	}

	// Create an empty import object.
	importObject := wasmer.NewImportObject()

	// Let's instantiate the WebAssembly module.
	instance, err := wasmer.NewInstance(module, importObject)

	if err != nil {
		panic(fmt.Sprintln("Failed to instantiate the module:", err))
	}

	// Now let's execute the `sum` function.
	sum, err := instance.Exports.GetFunction("sum")

	if err != nil {
		panic(fmt.Sprintln("Failed to get the `add_one` function:", err))
	}

	return sum
}()

func main() {
	fmt.Println("wasm")
}

//wasm_test.go

func TestWasmerSumFunc(t *testing.T) {

	elementCount := 100000
	sum_element_1 := make([]int32, elementCount)
	sum_element_2 := make([]int32, elementCount)

	for i := 0; i < elementCount-1; i++ {
		sum_element_1[i] = 10000
		sum_element_2[i] = 10000
	}

	for i := 0; i < elementCount; i++ {
		//t.Logf("%T", wasmer_sum_func)
		_, err := wasmer_sum_func(sum_element_1[i], sum_element_2[i])
		if err != nil {
			t.Fatalf("error: %v. a: %v, b: %v", err, sum_element_1[i], sum_element_2[i])
		}
		//t.Logf("%v", v)
	}
}

Describe the bug

golang test failed with the following error message.

SIGBUS: bus error
PC=0x160b0ea75 m=5 sigcode=2 addr=0x160b0ea75
signal arrived during cgo execution

goroutine 6 gp=0xc000007dc0 m=5 mp=0xc00005d808 [syscall]:

Steps to reproduce

1. Go to '…'
2. Compile with '…'
3. Run '…'
4. See error

If applicable, add a link to a test case (as a zip file or link to a repository we can clone).

Expected behavior

A clear and concise description of what you expected to happen.

Actual behavior

A clear and concise description of what actually happened.

If applicable, add screenshots to help explain your problem.

Additional context

Add any other context about the problem here.