1 files changed, 28 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/parser/stencil-asmjs.js b/js/src/jit-test/tests/parser/stencil-asmjs.js
new file mode 100644
index 0000000000..0379fa05eb
--- /dev/null
+++ b/js/src/jit-test/tests/parser/stencil-asmjs.js
@@ -0,0 +1,28 @@
+// |jit-test| skip-if: isLcovEnabled()
+
+let source = `
+  var m = function() {
+    "use asm"
+    function g(){}
+    return g;
+  }
+
+  function check() {
+    var objM = new m;
+    var g = m();
+    // g is a ctor returning an primitive value, thus an empty object
+    assertEq(Object.getOwnPropertyNames(new g).length, 0);
+  }
+
+  check()
+`;
+
+// Check that on-demand delazification and concurrent delazification are not
+// attempting to parse "use asm" functions.
+const options = {
+    fileName: "tests/asm.js/testBug999790.js",
+    lineNumber: 1,
+    eagerDelazificationStrategy: "CheckConcurrentWithOnDemand",
+    newContext: true,
+};
+evaluate(source, options);