V8 - Nil reference issue with nested go-app components

[aervin]

Hoping there's a simple fix for this nil reference issue I'm experiencing during app.Compo.Update() calls.

Code that raises the error:

app.Div().ID(adminId).Body(
	app.Button().
            ID(adminId).
            Class("default").
            Style("min-width", "72px").
            Body(&CompIcon{Name: "far fa-trash-alt"}),
)

Code that makes things work:

app.Div().ID(adminId).Body(
	app.Button().
            ID(adminId).
            Class("default").
            Style("min-width", "72px").
            Body((&CompIcon{Name: "far fa-trash-alt"}).Render()),
)

Calling app.Compo.Render() explicitly seems to resolve the issue. But I'm wondering if this is expected or if there's an issue with how I'm composing my components.

TIA!

[aervin]

Ran into this again so thought I'd follow up with a traceback:

panic: runtime error: invalid memory address or nil pointer dereference [recovered]
wasm_exec.js:51 	panic: runtime error: invalid memory address or nil pointer dereference
wasm_exec.js:51 [signal 0xb code=0x0 addr=0x0 pc=0x0]
wasm_exec.js:51 
wasm_exec.js:51 goroutine 1 [running]:
wasm_exec.js:51 github.com/maxence-charriere/go-app/v8/pkg/app.RunWhenOnBrowser.func1()
wasm_exec.js:51 	/home/aaron/go/pkg/mod/github.com/maxence-charriere/go-app/v8@v8.0.0/pkg/app/app.go:103 +0x4
wasm_exec.js:51 panic(0x6fd40, 0x617980)
wasm_exec.js:51 	/snap/go/7954/src/runtime/panic.go:965 +0x19
wasm_exec.js:51 github.com/maxence-charriere/go-app/v8/pkg/app.(*Compo).Defer(0xaeac60, 0xb95d70)
wasm_exec.js:51 	/home/aaron/go/pkg/mod/github.com/maxence-charriere/go-app/v8@v8.0.0/pkg/app/component.go:177 +0xb
wasm_exec.js:51 github.com/maxence-charriere/go-app/v8/pkg/app.(*Compo).Update(0xaeac60)
wasm_exec.js:51 	/home/aaron/go/pkg/mod/github.com/maxence-charriere/go-app/v8@v8.0.0/pkg/app/component.go:189 +0x5
wasm_exec.js:51 main.(*CompCloudServiceDetails).OnUpdate2.func1()
wasm_exec.js:51 	/home/aaron/Desktop/tc-saas-backend/src-go/hq/src-wasm/comp-cloud-service-details.go:164 +0x4

[maxence-charriere]

Thanks for reporting, I'll see what I can do.

[aervin]

Thanks! Please let me know if I need to provide more context.