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Allow disable node v8 maglev jit compiler on node24. #4447

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Merged
TingluoHuang merged 2 commits into from
May 26, 2026
+12 −1
Merged

Allow disable node v8 maglev jit compiler on node24. #4447

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af0fab8
Disable node v8 maglev jit compiler on Windows.
TingluoHuang May 22, 2026
0663c69
feedback.
TingluoHuang May 26, 2026
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3 changes: 2 additions & 1 deletion .gitignore
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Original file line number Diff line number Diff line change
Expand Up @@ -27,4 +27,5 @@ TestResults
TestLogs
.DS_Store
.mono
**/*.DotSettings.user
**/*.DotSettings.user
**/*.lscache
10 changes: 10 additions & 0 deletions src/Runner.Worker/Handlers/NodeScriptActionHandler.cs
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Expand Up @@ -12,6 +12,7 @@
using GitHub.Runner.Sdk;
using GitHub.Runner.Worker.Container;
using GitHub.Runner.Worker.Container.ContainerHooks;
using GitHub.Services.Common;

namespace GitHub.Runner.Worker.Handlers
{
Expand Down Expand Up @@ -128,6 +129,15 @@ public async Task RunAsync(ActionRunStage stage)
// file name character on Linux.
string arguments = StepHost.ResolvePathForStepHost(ExecutionContext, StringUtil.Format(@"""{0}""", target.Replace(@"""", @"\""")));

// Disable maglev jit compiler in node.js 24.x.x on x64 Windows until the node.js bug is fixed.
// https://github.com/nodejs/node/issues/62260
if (nodeRuntimeVersion.StartsWith("node24", StringComparison.OrdinalIgnoreCase) &&
(StringUtil.ConvertToBoolean(System.Environment.GetEnvironmentVariable("ACTIONS_RUNNER_DISABLE_NODE_MAGLEV")) || StringUtil.ConvertToBoolean(Environment.GetValueOrDefault("ACTIONS_RUNNER_DISABLE_NODE_MAGLEV"))))
{
Trace.Info("Disable maglev jit compiler in node.js");
arguments = $"--no-maglev {arguments}";
}

#if OS_WINDOWS
// It appears that node.exe outputs UTF8 when not in TTY mode.
Encoding outputEncoding = Encoding.UTF8;
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