diff --git a/gas/Cargo.lock b/gas/Cargo.lock
index 7adb829..4353571 100644
--- a/gas/Cargo.lock
+++ b/gas/Cargo.lock
@@ -13,7 +13,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 [[package]]
 name = "parity-wasm"
 version = "0.2.0"
-source = "git+https://github.com/nikvolf/parity-wasm#cafc5058357f6ea84daaec870057da8455bf74e8"
+source = "git+https://github.com/nikvolf/parity-wasm#4011af4f75e9334a2a018fdb2f464d9c7eb21617"
 dependencies = [
  "byteorder 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
diff --git a/gas/src/main.rs b/gas/src/main.rs
index 22a6149..95e272f 100644
--- a/gas/src/main.rs
+++ b/gas/src/main.rs
@@ -48,6 +48,8 @@ fn main() {
     // back to plain module
     let mut module = mbuilder.build();
 
+    assert!(module.global_section().is_some());
+
     // calculate actual function index of the imported definition
     //    (substract all imports that are NOT functions)
 
diff --git a/samples/contract1.c b/samples/contract1.c
new file mode 100644
index 0000000..3812354
--- /dev/null
+++ b/samples/contract1.c
@@ -0,0 +1,10 @@
+int ops = 0;
+
+void log(int block_ops) {
+    ops += block_ops;
+}
+
+int call(int x) {
+  log(5);
+  return 2 * x;
+}
\ No newline at end of file