Unclosed braces cause hanging

[AntoinePrv]

These examples will run forever

void f() {
    int x = 0;

{
    int x = 0;

Setups tried:

• xeus-cpp==0.8.0 on conda-forge for MacOS arm64 (M3)
• xeus-cpp==0.8.0 on exmscripten-forge for emscripten-wasm32

[anutosh491]

Thanks for the report

I provided a fix here few months back : llvm/llvm-project#127569

I think we should be able to land it. Let me work towards revamping it now !