63 lines
2.5 KiB
Diff
63 lines
2.5 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Shelley Vohr <shelley.vohr@gmail.com>
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Date: Mon, 9 Aug 2021 18:42:15 +0200
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Subject: repl: fix crash when SharedArrayBuffer disabled
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It's possible for SharedArrayBuffers to be disabled with
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--no-harmony-sharedarraybuffer so we first need to check that this
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isn't the case before attempting to use them in the repl or a crash occurs.
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Upstreamed at https://github.com/nodejs/node/pull/39718.
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diff --git a/benchmark/worker/atomics-wait.js b/benchmark/worker/atomics-wait.js
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index a771b1813731edf4f0dd60f3505799e389f1d876..b9461677e2d7d1df192e752496e62cca837717b5 100644
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--- a/benchmark/worker/atomics-wait.js
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+++ b/benchmark/worker/atomics-wait.js
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@@ -7,6 +7,10 @@ const bench = common.createBenchmark(main, {
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});
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function main({ n }) {
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+ if (typeof SharedArrayBuffer === 'undefined') {
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+ throw new Error('SharedArrayBuffers must be enabled to run this benchmark');
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+ }
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+
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const i32arr = new Int32Array(new SharedArrayBuffer(4));
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bench.start();
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for (let i = 0; i < n; i++)
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diff --git a/lib/internal/main/worker_thread.js b/lib/internal/main/worker_thread.js
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index 71a07a63a3636ab211746004ebab24a0058b08fc..e3ce67987ee3185a93750ebad72beab304c71e3a 100644
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--- a/lib/internal/main/worker_thread.js
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+++ b/lib/internal/main/worker_thread.js
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@@ -9,7 +9,7 @@ const {
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ArrayPrototypeSplice,
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ObjectDefineProperty,
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PromisePrototypeCatch,
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- globalThis: { Atomics },
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+ globalThis: { Atomics, SharedArrayBuffer },
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} = primordials;
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const {
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@@ -142,6 +142,9 @@ port.on('message', (message) => {
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const originalCwd = process.cwd;
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process.cwd = function() {
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+ // SharedArrayBuffers can be disabled with --no-harmony-sharedarraybuffer.
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+ if (typeof SharedArrayBuffer === 'undefined') return originalCwd();
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+
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const currentCounter = Atomics.load(cwdCounter, 0);
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if (currentCounter === lastCounter)
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return cachedCwd;
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diff --git a/lib/internal/worker.js b/lib/internal/worker.js
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index d59399bfefed10f85e0adac7ef9fefc0cb1ae67c..ad70afa311d0a0418d788920b42259f94c283006 100644
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--- a/lib/internal/worker.js
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+++ b/lib/internal/worker.js
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@@ -91,7 +91,8 @@ let cwdCounter;
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const environmentData = new SafeMap();
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-if (isMainThread) {
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+// SharedArrayBuffers can be disabled with --no-harmony-sharedarraybuffer.
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+if (isMainThread && typeof SharedArrayBuffer !== 'undefined') {
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cwdCounter = new Uint32Array(new SharedArrayBuffer(4));
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const originalChdir = process.chdir;
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process.chdir = function(path) {
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