[Error Return Traces](https://ziglang.org/documentation/0.9.1/#Error-Return-Traces) ```zig fn zirErrorReturnTrace( sema: *Sema, block: *Block, extended: Zir.Inst.Extended.InstData, ) CompileError!Air.Inst.Ref { const src: LazySrcLoc = .{ .node_offset = @bitCast(i32, extended.operand) }; return sema.fail(block, src, "TODO: Sema.zirErrorReturnTrace", .{}); } ```