Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

9 files changed, 718 insertions, 0 deletions

diff --git a/js/src/tests/shell/README b/js/src/tests/shell/README
new file mode 100644
index 0000000000..0c7a3d1498
--- /dev/null
+++ b/js/src/tests/shell/README
@@ -0,0 +1 @@
+Tests for JS shell-only functions
diff --git a/js/src/tests/shell/futex-apis.js b/js/src/tests/shell/futex-apis.js
new file mode 100644
index 0000000000..dd38a1c98b
--- /dev/null
+++ b/js/src/tests/shell/futex-apis.js
@@ -0,0 +1,125 @@
+// |reftest| skip-if(!xulRuntime.shell)
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ */
+
+if (this.SharedArrayBuffer && this.Atomics) {
+
+// Checks for parameter validation of wait/wake API.  All of these test
+// cases should throw exceptions during parameter validation, before
+// we check whether any waiting should be done.
+
+let ab = new ArrayBuffer(16);
+let sab = new SharedArrayBuffer(16);
+
+//////////////////////////////////////////////////////////////////////
+//
+// The view must be an Int32Array on a SharedArrayBuffer.
+
+// Check against non-TypedArray cases.
+
+{
+    let values = [null,
+		  undefined,
+		  true,
+		  false,
+		  new Boolean(true),
+		  10,
+		  3.14,
+		  new Number(4),
+		  "Hi there",
+		  new Date,
+		  /a*utomaton/g,
+		  { password: "qumquat" },
+		  new DataView(new ArrayBuffer(10)),
+		  new ArrayBuffer(128),
+		  new SharedArrayBuffer(128),
+		  new Error("Ouch"),
+		  [1,1,2,3,5,8],
+		  ((x) => -x),
+		  new Map(),
+		  new Set(),
+		  new WeakMap(),
+		  new WeakSet(),
+		  new Promise(() => "done"),
+		  Symbol("halleluja"),
+		  // TODO: Proxy?
+		  Object,
+		  Int32Array,
+		  Date,
+		  Math,
+		  Atomics ];
+
+    for ( let i=0 ; i < values.length ; i++ ) {
+	let view = values[i];
+	assertThrowsInstanceOf(() => Atomics.wait(view, 0, 0), TypeError);
+	assertThrowsInstanceOf(() => Atomics.wake(view, 0), TypeError);
+    }
+}
+
+// Check against TypedArray on non-shared memory and wrong view types cases.
+
+{
+    let views = [Int8Array, Uint8Array, Int16Array, Uint16Array, Uint32Array,
+      Uint8ClampedArray, Float32Array, Float64Array];
+
+    for ( let View of views ) {
+	let view = new View(ab);
+
+	assertThrowsInstanceOf(() => Atomics.wait(view, 0, 0), TypeError);
+	assertThrowsInstanceOf(() => Atomics.wake(view, 0), TypeError);
+    }
+}
+
+// Check against TypedArray on non-shared memory and correct view types cases.
+
+{
+    let views = [Int32Array];
+
+    for ( let View of views ) {
+        let view = new View(ab);
+
+        assertThrowsInstanceOf(() => Atomics.wait(view, 0, 0), TypeError);
+        assertEq(Atomics.wake(view, 0, 0), 0);
+    }
+}
+
+// Check against TypedArray on shared memory, but wrong view type
+
+{
+    let views = [Int8Array, Uint8Array, Int16Array, Uint16Array, Uint32Array,
+		 Uint8ClampedArray, Float32Array, Float64Array];
+
+    for ( let View of views ) {
+	let view = new View(sab);
+
+	assertThrowsInstanceOf(() => Atomics.wait(view, 0, 0), TypeError);
+	assertThrowsInstanceOf(() => Atomics.wake(view, 0), TypeError);
+    }
+}
+
+//////////////////////////////////////////////////////////////////////
+//
+// The indices must be in the range of the array
+
+{
+    let view = new Int32Array(sab);
+
+    let indices = [ (view) => -1,
+		    (view) => view.length,
+		    (view) => view.length*2,
+		    (view) => '-3.5',
+	            (view) => ({ valueOf: () => -8 }) ];
+
+    for ( let iidx=0 ; iidx < indices.length ; iidx++ ) {
+	let Idx = indices[iidx](view);
+	assertThrowsInstanceOf(() => Atomics.wait(view, Idx, 10), RangeError);
+	assertThrowsInstanceOf(() => Atomics.wake(view, Idx), RangeError);
+    }
+}
+
+} // if (this.SharedArrayBuffer && this.Atomics) { ... }
+
+reportCompare(true,true);
diff --git a/js/src/tests/shell/futex.js b/js/src/tests/shell/futex.js
new file mode 100644
index 0000000000..f3ad8c0a3e
--- /dev/null
+++ b/js/src/tests/shell/futex.js
@@ -0,0 +1,117 @@
+// |reftest| slow skip-if(!xulRuntime.shell)
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ */
+
+var DEBUG = false;
+
+function dprint(s) {
+    if (DEBUG) print(s);
+}
+
+var hasSharedArrayBuffer = !!(this.SharedArrayBuffer &&
+                              this.getSharedObject &&
+                              this.setSharedObject);
+
+// Futex test
+
+// Only run if helper threads are available.
+if (hasSharedArrayBuffer && helperThreadCount() !== 0) {
+
+var mem = new Int32Array(new SharedArrayBuffer(1024));
+
+////////////////////////////////////////////////////////////
+
+// wait() returns "not-equal" if the value is not the expected one.
+
+mem[0] = 42;
+
+assertEq(Atomics.wait(mem, 0, 33), "not-equal");
+
+// wait() returns "timed-out" if it times out
+
+assertEq(Atomics.wait(mem, 0, 42, 100), "timed-out");
+
+////////////////////////////////////////////////////////////
+
+// Main is sharing the buffer with the worker; the worker is clearing
+// the buffer.
+
+mem[0] = 42;
+mem[1] = 37;
+mem[2] = DEBUG;
+
+setSharedObject(mem.buffer);
+
+evalInWorker(`
+var mem = new Int32Array(getSharedObject());
+function dprint(s) {
+    if (mem[2]) print(s);
+}
+assertEq(mem[0], 42);		// what was written in the main thread
+assertEq(mem[1], 37);		//   is read in the worker
+mem[1] = 1337;
+dprint("Sleeping for 2 seconds");
+sleep(2);
+dprint("Waking the main thread now");
+setSharedObject(null);
+assertEq(Atomics.notify(mem, 0, 1), 1); // Can fail spuriously but very unlikely
+`);
+
+var then = Date.now();
+assertEq(Atomics.wait(mem, 0, 42), "ok");
+dprint("Woke up as I should have in " + (Date.now() - then)/1000 + "s");
+assertEq(mem[1], 1337); // what was written in the worker is read in the main thread
+assertEq(getSharedObject(), null); // The worker's clearing of the mbx is visible
+
+////////////////////////////////////////////////////////////
+
+// Test the default argument to Atomics.notify()
+
+setSharedObject(mem.buffer);
+
+evalInWorker(`
+var mem = new Int32Array(getSharedObject());
+sleep(2);				// Probably long enough to avoid a spurious error next
+assertEq(Atomics.notify(mem, 0), 1);	// Last argument to notify should default to +Infinity
+`);
+
+var then = Date.now();
+dprint("Main thread waiting on wakeup (2s)");
+assertEq(Atomics.wait(mem, 0, 42), "ok");
+dprint("Woke up as I should have in " + (Date.now() - then)/1000 + "s");
+
+////////////////////////////////////////////////////////////
+
+// A tricky case: while in the wait there will be an interrupt, and in
+// the interrupt handler we will execute a wait.  This is
+// explicitly prohibited (for now), so there should be a catchable exception.
+
+var exn = false;
+timeout(2, function () {
+    dprint("In the interrupt, starting inner wait with timeout 2s");
+    try {
+        Atomics.wait(mem, 0, 42); // Should throw
+    } catch (e) {
+        dprint("Got the interrupt exception!");
+        exn = true;
+    }
+    return true;
+});
+try {
+    dprint("Starting outer wait");
+    assertEq(Atomics.wait(mem, 0, 42, 5000), "timed-out");
+}
+finally {
+    timeout(-1);
+}
+assertEq(exn, true);
+
+////////////////////////////////////////////////////////////
+
+} // if (hasSharedArrayBuffer && helperThreadCount() !== 0) { ... }
+
+dprint("Done");
+reportCompare(true,true);
diff --git a/js/src/tests/shell/gcstats.js b/js/src/tests/shell/gcstats.js
new file mode 100644
index 0000000000..8923a1e489
--- /dev/null
+++ b/js/src/tests/shell/gcstats.js
@@ -0,0 +1,60 @@
+// |reftest| skip-if(!xulRuntime.shell)
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ */
+
+function garbage() {
+  var x;
+  for (var i = 0; i < 100000; i++)
+    x = { 'i': i };
+}
+
+setGCCallback({
+  action: "majorGC",
+  depth: 1,
+  phases: "both"
+});
+
+gc();
+garbage();
+
+setGCCallback({
+  action: "majorGC",
+  depth: 2,
+  phases: "both"
+});
+
+gc();
+garbage();
+
+setGCCallback({
+  action: "majorGC",
+  depth: 8,
+  phases: "begin"
+});
+
+gc();
+garbage();
+
+setGCCallback({
+  action: "minorGC",
+  phases: "both"
+});
+
+gc();
+garbage();
+
+var caught = false;
+try {
+  setGCCallback({
+    action: "majorGC",
+    depth: 10000,
+    phases: "begin"
+  });
+} catch (e) {
+  caught = ((""+e).indexOf("Nesting depth too large") >= 0);
+}
+
+reportCompare(caught, true);
diff --git a/js/src/tests/shell/mailbox.js b/js/src/tests/shell/mailbox.js
new file mode 100644
index 0000000000..1ab2f662cd
--- /dev/null
+++ b/js/src/tests/shell/mailbox.js
@@ -0,0 +1,104 @@
+// |reftest| skip-if(!xulRuntime.shell)
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ */
+
+// Tests the shared-object mailbox in the shell.
+
+var hasSharedMemory = !!(this.SharedArrayBuffer &&
+                         this.getSharedObject &&
+                         this.setSharedObject);
+
+if (!hasSharedMemory) {
+    reportCompare(true, true);
+    quit(0);
+}
+
+var sab = new SharedArrayBuffer(12);
+var mem = new Int32Array(sab);
+
+// SharedArrayBuffer mailbox tests
+
+assertEq(getSharedObject(), null); // Mbx starts empty
+
+assertEq(setSharedObject(mem.buffer), undefined); // Setter returns undefined
+assertEq(getSharedObject() == null, false);       // And then the mbx is not empty
+
+var v = getSharedObject();
+assertEq(v.byteLength, mem.buffer.byteLength); // Looks like what we put in?
+var w = new Int32Array(v);
+mem[0] = 314159;
+assertEq(w[0], 314159);		// Shares memory (locally) with what we put in?
+mem[0] = 0;
+
+setSharedObject(3.14);	// Share numbers
+assertEq(getSharedObject(), 3.14);
+
+setSharedObject(null);	// Setting to null clears to null
+assertEq(getSharedObject(), null);
+
+setSharedObject(mem.buffer);
+setSharedObject(undefined); // Setting to undefined clears to null
+assertEq(getSharedObject(), null);
+
+setSharedObject(mem.buffer);
+setSharedObject();		// Setting without arguments clears to null
+assertEq(getSharedObject(), null);
+
+// Non-shared objects cannot be stored in the mbx
+
+assertThrowsInstanceOf(() => setSharedObject({x:10, y:20}), Error);
+assertThrowsInstanceOf(() => setSharedObject([1,2]), Error);
+assertThrowsInstanceOf(() => setSharedObject(new ArrayBuffer(10)), Error);
+assertThrowsInstanceOf(() => setSharedObject(new Int32Array(10)), Error);
+assertThrowsInstanceOf(() => setSharedObject(false), Error);
+assertThrowsInstanceOf(() => setSharedObject(mem), Error);
+assertThrowsInstanceOf(() => setSharedObject("abracadabra"), Error);
+assertThrowsInstanceOf(() => setSharedObject(() => 37), Error);
+
+// We can store wasm shared memories, too
+
+if (!this.WebAssembly || !wasmThreadsEnabled()) {
+    reportCompare(true, true);
+    quit(0);
+}
+
+setSharedObject(null);
+
+var mem = new WebAssembly.Memory({initial: 1, maximum: 1, shared: true});
+setSharedObject(mem);
+var ia1 = new Int32Array(mem.buffer);
+
+var mem2 = getSharedObject();
+assertEq(mem2.buffer instanceof SharedArrayBuffer, true);
+assertEq(mem2.buffer.byteLength, 65536);
+var ia2 = new Int32Array(mem2.buffer);
+
+ia2[37] = 0x12345678;
+assertEq(ia1[37], 0x12345678);
+
+// Can't store a non-shared memory
+
+assertThrowsInstanceOf(() => setSharedObject(new WebAssembly.Memory({initial: 1, maximum: 1})), Error);
+
+// We can store wasm modules
+
+var mod = new WebAssembly.Module(wasmTextToBinary(`(module
+                                                    (import "m" "f" (func (param i32) (result i32)))
+                                                    (func (export "hi") (result i32)
+                                                     (i32.const 37))
+                                                    )`));
+
+setSharedObject(mod);
+
+var mod2 = getSharedObject();
+
+// This should fail because we're not providing the correct import object
+assertThrowsInstanceOf(() => new WebAssembly.Instance(mod2, {m:{}}), WebAssembly.LinkError);
+
+// But this should work
+new WebAssembly.Instance(mod2, {m:{f:(x) => x}});
+
+reportCompare(true,true);
diff --git a/js/src/tests/shell/os.js b/js/src/tests/shell/os.js
new file mode 100644
index 0000000000..06e08f683b
--- /dev/null
+++ b/js/src/tests/shell/os.js
@@ -0,0 +1,39 @@
+// |reftest| skip-if(!xulRuntime.shell||xulRuntime.OS=="WINNT")
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ */
+
+var pid = os.getpid();
+assertEq(pid > 0, true);
+
+var PATH = os.getenv("PATH");
+assertEq(PATH.indexOf("bin") > 0, true);
+assertEq(os.getenv("SQUAMMISH_HILLBILLY_GOAT_SQUEEZERS"), undefined);
+
+assertEq(os.system("true"), 0, "/bin/true should exit 0");
+assertEq(os.system("false") != 0, true, "/bin/false should exit nonzero");
+
+var kidpid = os.spawn("sleep 60");
+assertEq(kidpid > 0, true, "spawning sleep");
+var info = os.waitpid(kidpid, true);
+assertEq(info.hasOwnProperty("pid"), false);
+assertEq(info.hasOwnProperty("exitStatus"), false);
+
+os.kill(kidpid);
+
+info = os.waitpid(kidpid);
+assertEq(info.hasOwnProperty("pid"), true, "waiting on dead process should return pid");
+assertEq(info.pid, kidpid);
+assertEq(info.hasOwnProperty("exitStatus"), false, "killed process should not have exitStatus");
+
+kidpid = os.spawn("false");
+assertEq(kidpid > 0, true, "spawning /bin/false");
+info = os.waitpid(kidpid);
+assertEq(info.hasOwnProperty("pid"), true, "waiting on dead process should return pid");
+assertEq(info.pid, kidpid);
+assertEq(info.hasOwnProperty("exitStatus"), true, "process should have exitStatus");
+assertEq(info.exitStatus, 1, "/bin/false should exit 1");
+
+reportCompare(true, true);
diff --git a/js/src/tests/shell/script-file-name-utf8.js b/js/src/tests/shell/script-file-name-utf8.js
new file mode 100644
index 0000000000..99fb318ae2
--- /dev/null
+++ b/js/src/tests/shell/script-file-name-utf8.js
@@ -0,0 +1,235 @@
+// |reftest| skip-if(!xulRuntime.shell)
+
+// Retrieve the script file name through various functions and ensure it's
+// always correctly decoded from UTF-8.
+
+// Special value when filename cannot be retrieved.
+const NOT_SUPPORTED = "*not supported*";
+
+// Return the file name from the Error#fileName property.
+function errorFileName(fileName) {
+  return evaluate("new Error().fileName", {fileName});
+}
+
+// Return the file name from the Parser by a SyntaxError.
+function errorFileNameParser(fileName) {
+  try {
+    evaluate("###", {fileName});
+  } catch (e) {
+    return e.fileName;
+  }
+}
+
+// Retrieve the file name through DescriptedCaller (1).
+function descriptedCallerViaThisFileName(fileName) {
+  return evaluate("thisFilename()", {fileName});
+}
+
+// Retrieve the file name through DescriptedCaller (2).
+function descriptedCallerViaEvalInContext(fileName) {
+  return evaluate("evalcx('new Error().fileName')", {fileName});
+}
+
+// Retrieve the file name through DescriptedCaller (3).
+function descriptedCallerViaEval(fileName) {
+  var pattern = / line 1 > eval$/;
+  return evaluate("eval('new Error().fileName')", {fileName}).replace(pattern, "");
+}
+
+// Retrieve the file name through DescriptedCaller (4).
+function descriptedCallerViaFunction(fileName) {
+  var pattern = / line 1 > Function$/;
+  return evaluate("Function('return new Error().fileName')()", {fileName}).replace(pattern, "");
+}
+
+// Retrieve the file name through DescriptedCaller (5).
+function descriptedCallerViaEvalReturningScope(fileName) {
+  return evaluate("evalReturningScope('var a = new Error().fileName')", {fileName}).a;
+}
+
+// Retrieve the file name through DescriptedCaller (7).
+var wasmModuleConstructorTemp;
+function descriptedCallerViaWasm(fileName) {
+  if (!wasmIsSupported()) {
+    return fileName;
+  }
+
+  wasmModuleConstructorTemp = null;
+  evaluate(`
+    function wasmEvalText(str, imports) {
+      let binary = wasmTextToBinary(str);
+      assertEq(WebAssembly.validate(binary), true);
+      let m = new WebAssembly.Module(binary);
+      return new WebAssembly.Instance(m, imports);
+    }
+    wasmEvalText('(module (import "" "a" (func)) (func (call 0)) (export "bar" (func 1)))',
+                  {
+                    "": {
+                      a() {
+                        wasmModuleConstructorTemp = new Error().stack;
+                        return 0;
+                      }
+                    }
+                  }).exports.bar();
+  `, {fileName});
+  var pattern = /^@(.*) line \d+ >.*$/;
+  var index = 1; // Direct caller is the wasm function.
+  return wasmModuleConstructorTemp.split("\n")[index].replace(pattern, "$1");
+}
+
+// Return the file name from Reflect.parse().
+function reflectParseSource(fileName) {
+  return Reflect.parse("", {source: fileName}).loc.source;
+}
+
+// Return the file name using the Error#stack property.
+function fromErrorStack(fileName) {
+  var pattern = /^@(.*):\d+:\d+$/;
+  return evaluate("new Error().stack", {fileName}).split("\n")[0].replace(pattern, "$1");
+}
+
+// Return the file name using the Error#stack property from an asm.js function.
+function fromErrorStackAsmJS(fileName) {
+  var asm = evaluate(`(function asm(stdlib, foreign) {
+    "use asm";
+    var f = foreign.f;
+    function g() {
+      return f() | 0;
+    }
+    return {g: g};
+  })`, {fileName});
+
+  var stackFileName;
+  var foreign = {
+    f() {
+      var pattern = /^g@(.*):\d+:\d+$/;
+      var index = 1; // Direct caller is the asm.js function.
+      var stack = new Error().stack;
+      stackFileName = stack.split("\n")[index].replace(pattern, "$1");
+      return 0;
+    }
+  };
+
+  asm(this, foreign).g();
+
+  return stackFileName;
+}
+
+// Return the file name using the Error#stacl property when a streaming compiled WASM function.
+function fromErrorStackStreamingWasm(fileName) {
+  if (!wasmIsSupported() || helperThreadCount() == 0) {
+    return fileName;
+  }
+
+  var source = new Uint8Array(wasmTextToBinary(`
+    (module (import "" "a" (func)) (func (call 0)) (export "bar" (func 1)))
+  `));
+  source.url = fileName;
+
+  var stackFileName;
+  var imports = {
+    "": {
+      a() {
+        var pattern = /^@(.*):wasm-function.*$/;
+        var index = 1; // Direct caller is the asm.js function.
+        var stack = new Error().stack;
+        stackFileName = stack.split("\n")[index].replace(pattern, "$1");
+        return 0;
+      }
+    }
+  };
+
+  var result;
+  WebAssembly.instantiateStreaming(source, imports).then(r => result = r);
+
+  drainJobQueue();
+
+  result.instance.exports.bar();
+
+  return stackFileName;
+}
+
+// Return the file name using the embedded info in getBacktrace().
+function getBacktraceScriptName(fileName) {
+  var pattern = /^\d+ <TOP LEVEL> \["(.*)":\d+:\d\]$/;
+  return evaluate("getBacktrace()", {fileName}).split("\n")[0].replace(pattern, "$1");
+}
+
+// Return the file name from the coverage report.
+function getLcovInfoScriptName(fileName) {
+  var g = newGlobal();
+  var scriptFiles =  g.evaluate("getLcovInfo()", {fileName})
+                      .split("\n")
+                      .filter(x => x.startsWith("SF:"));
+  assertEq(scriptFiles.length, 1);
+  return scriptFiles[0].substring(3);
+}
+
+// Return the file name from the error during module import.
+function moduleResolutionError(fileName) {
+  const a = parseModule(`import { x } from "b";`, fileName);
+  const ma = registerModule("a", a);
+  const b = parseModule(`export var y = 10;`);
+  const mb = registerModule("b", b);
+
+  try {
+    moduleLink(ma);
+  } catch (e) {
+    return e.fileName;
+  }
+}
+
+// Return the file name from the profiler stack.
+function geckoInterpProfilingStack(fileName) {
+  enableGeckoProfilingWithSlowAssertions();
+  const stack = evaluate(`readGeckoInterpProfilingStack();`, { fileName });
+  if (stack.length === 0) {
+    return NOT_SUPPORTED;
+  }
+  const result = stack[0].dynamicString;
+  disableGeckoProfiling();
+  return result;
+}
+
+const testFunctions = [
+  errorFileName,
+  errorFileNameParser,
+  descriptedCallerViaThisFileName,
+  descriptedCallerViaEvalInContext,
+  descriptedCallerViaEval,
+  descriptedCallerViaFunction,
+  descriptedCallerViaEvalReturningScope,
+  descriptedCallerViaWasm,
+  reflectParseSource,
+  fromErrorStack,
+  fromErrorStackAsmJS,
+  fromErrorStackStreamingWasm,
+  getBacktraceScriptName,
+  moduleResolutionError,
+];
+
+if (isLcovEnabled()) {
+  testFunctions.push(getLcovInfoScriptName);
+}
+
+const fileNames = [
+  "",
+  "test",
+  "Ðëßþ",
+  "тест",
+  "テスト",
+  "\u{1F9EA}",
+];
+
+for (const fn of testFunctions) {
+  for (const fileName of fileNames) {
+    const result = fn(fileName);
+    if (result === NOT_SUPPORTED) {
+      continue;
+    }
+    assertEq(result, fileName, `Caller '${fn.name}'`);
+  }
+}
+
+if (typeof reportCompare === "function")
+  reportCompare(true, true);
diff --git a/js/src/tests/shell/shell.js b/js/src/tests/shell/shell.js
new file mode 100644
index 0000000000..7584133dad
--- /dev/null
+++ b/js/src/tests/shell/shell.js
@@ -0,0 +1,4 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
diff --git a/js/src/tests/shell/warning.js b/js/src/tests/shell/warning.js
new file mode 100644
index 0000000000..3a390b0864
--- /dev/null
+++ b/js/src/tests/shell/warning.js
@@ -0,0 +1,33 @@
+// |reftest| skip-if(!xulRuntime.shell)
+
+var BUGNUMBER = 1170716;
+var summary = 'Add js shell functions to get last warning';
+
+print(BUGNUMBER + ": " + summary);
+
+// Warning with JSEXN_SYNTAXERR.
+
+enableLastWarning();
+eval(`function f() { if (false) { "use asm"; } }`);
+
+warning = getLastWarning();
+assertEq(warning !== null, true);
+assertEq(warning.name, "SyntaxError");
+assertEq(warning.message.includes("Directive Prologue"), true);
+assertEq(warning.lineNumber, 1);
+assertEq(warning.columnNumber, 28);
+
+// Disabled.
+
+disableLastWarning();
+
+eval(`function f() { if (false) { "use asm"; } }`);
+
+enableLastWarning();
+warning = getLastWarning();
+assertEq(warning, null);
+
+disableLastWarning();
+
+if (typeof reportCompare === "function")
+  reportCompare(true, true);