Well, I'll take them over the nothing you're giving me :D

But in all seriousness, I want this:

  struct Result { int value; int err; };
  #define TRY(res) \
    ({ \
       Result _res = res; \
       if (failed(res)) return res; \
       res.value; \
    })
  Result f1(...) { ... }
  Result f2() {
     int res = TRY(f1(...)); // <<<<
     ...
     return success();
  }

Can't be done with lambdas since the macro needs to return out of the actual function, not the lambda. Pretty much rust question mark, but without rust, or zig "try" but without zig.