Add m-esr52 at 52.6.0

1 files changed, 92 insertions, 0 deletions

diff --git a/js/src/jit-test/tests/saved-stacks/capture-first-frame-with-principals.js b/js/src/jit-test/tests/saved-stacks/capture-first-frame-with-principals.js
new file mode 100644
index 000000000..6b126cb09
--- /dev/null
+++ b/js/src/jit-test/tests/saved-stacks/capture-first-frame-with-principals.js
@@ -0,0 +1,92 @@
+// Create two different globals whose compartments have two different
+// principals. Test getting the first frame on the stack with some given
+// principals in various configurations of JS stack and of wanting self-hosted
+// frames or not.
+
+const g1 = newGlobal({
+  principal: 0xffff
+});
+
+const g2 = newGlobal({
+  principal: 0xff
+});
+
+// Introduce everyone to themselves and each other.
+g1.g2 = g2.g2 = g2;
+g1.g1 = g2.g1 = g1;
+
+g1.g2obj = g2.eval("new Object");
+
+g1.evaluate(`
+  const global = this;
+
+  // Capture the stack back to the first frame in the g2 global.
+  function capture(shouldIgnoreSelfHosted = true) {
+    return captureFirstSubsumedFrame(global.g2obj, shouldIgnoreSelfHosted);
+  }
+`, {
+  fileName: "script1.js"
+});
+
+g2.evaluate(`
+  const capture = g1.capture;
+
+  // Use our Function.prototype.bind, not capture.bind (which is ===
+  // g1.Function.prototype.bind) so that the generated bound function is in our
+  // compartment and has our principals.
+  const boundTrue = Function.prototype.bind.call(capture, null, true);
+  const boundFalse = Function.prototype.bind.call(capture, null, false);
+
+  function getOldestFrame(stack) {
+    while (stack.parent) {
+      stack = stack.parent;
+    }
+    return stack;
+  }
+
+  function dumpStack(name, stack) {
+    print("Stack " + name + " =");
+    while (stack) {
+      print("    " + stack.functionDisplayName + " @ " + stack.source);
+      stack = stack.parent;
+    }
+    print();
+  }
+
+  // When the youngest frame is not self-hosted, it doesn't matter whether or not
+  // we specify that we should ignore self hosted frames when capturing the first
+  // frame with the given principals.
+  //
+  // Stack: iife1 (g2) <- capture (g1)
+
+  (function iife1() {
+    const captureTrueStack = capture(true);
+    dumpStack("captureTrueStack", captureTrueStack);
+    assertEq(getOldestFrame(captureTrueStack).functionDisplayName, "iife1");
+    assertEq(getOldestFrame(captureTrueStack).source, "script2.js");
+
+    const captureFalseStack = capture(false);
+    dumpStack("captureFalseStack", captureFalseStack);
+    assertEq(getOldestFrame(captureFalseStack).functionDisplayName, "iife1");
+    assertEq(getOldestFrame(captureFalseStack).source, "script2.js");
+  }());
+
+  // When the youngest frame is a self hosted frame, we get two different
+  // captured stacks depending on whether or not we ignore self-hosted frames.
+  //
+  // Stack: iife2 (g2) <- bound function (g2) <- capture (g1)
+
+  (function iife2() {
+    const boundTrueStack = boundTrue();
+    dumpStack("boundTrueStack", boundTrueStack);
+    assertEq(getOldestFrame(boundTrueStack).functionDisplayName, "iife2");
+    assertEq(getOldestFrame(boundTrueStack).source, "script2.js");
+
+    const boundFalseStack = boundFalse();
+    dumpStack("boundFalseStack", boundFalseStack);
+    assertEq(getOldestFrame(boundFalseStack).functionDisplayName !== "iife2", true);
+    assertEq(getOldestFrame(boundFalseStack).source, "self-hosted");
+  }());
+`, {
+  fileName: "script2.js"
+});