diff --git a/Project.toml b/Project.toml
index 4ea2e86c..a1db18f3 100644
--- a/Project.toml
+++ b/Project.toml
@@ -3,7 +3,7 @@ uuid = "6f1fad26-d15e-5dc8-ae53-837a1d7b8c9f"
 license = "MIT"
 desc = "Tape based task copying in Turing"
 repo = "https://github.com/TuringLang/Libtask.jl.git"
-version = "0.6.8"
+version = "0.6.9"
 
 [deps]
 IRTools = "7869d1d1-7146-5819-86e3-90919afe41df"
diff --git a/src/tapedfunction.jl b/src/tapedfunction.jl
index ea5ea13c..b6c22e71 100644
--- a/src/tapedfunction.jl
+++ b/src/tapedfunction.jl
@@ -173,12 +173,25 @@ function (instr::Instruction{F})() where F
     end
 end
 
+"""
+    __new__(T, args)
+
+Return a new instance of `T` with `args` even when there is no inner constructor for these args.
+Source: https://discourse.julialang.org/t/create-a-struct-with-uninitialized-fields/6967/5
+"""
+@generated function __new__(T, args)
+    return Expr(:splatnew, :T, :args)
+end
+
 function _new end
 function (instr::Instruction{typeof(_new)})()
     # catch run-time exceptions / errors.
     try
-        expr = Expr(:new, map(val, instr.input)...)
-        output = eval(expr)
+        input = map(val, instr.input)
+        T = input[1]
+        args = input[2:end]
+        output = __new__(T, args)
+
         instr.output.val = output
         instr.tape.counter += 1
     catch e