1 files changed, 22 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Frame-onStep-18.js b/js/src/jit-test/tests/debug/Frame-onStep-18.js
new file mode 100644
index 0000000000..0484a45cf7
--- /dev/null
+++ b/js/src/jit-test/tests/debug/Frame-onStep-18.js
@@ -0,0 +1,22 @@
+// Regression test for bug 1370648.
+
+let g = newGlobal({newCompartment: true});
+
+let dbg = Debugger(g);
+let lines = [0, 0, 0, 0, 0];
+dbg.onDebuggerStatement = function (frame) {
+  let dLine = frame.script.getOffsetLocation(frame.offset).lineNumber;
+  lines[0] = 1;
+  frame.onStep = function () {
+    lines[frame.script.getOffsetLocation(this.offset).lineNumber - dLine] = 1;
+  };
+}
+
+let s = `
+      debugger;                 // 0
+      if (1 !== 1) {            // 1
+        print("dead code!?");   // 2
+      }                         // 3
+`;
+g.eval(s);
+assertEq(lines.join(""), "11001");