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util: inspect: do not crash on an Error stack pointing to itself #58196

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Merged
nodejs-github-bot merged 3 commits into from
Jun 16, 2025
Merged

util: inspect: do not crash on an Error stack pointing to itself #58196

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8b819f9
util: inspect: do not crash on an Error stack pointing to itself
SamVerschueren May 6, 2025
f616bcc
fix: linting error
SamVerschueren May 6, 2025
111b9ca
chore: address feedback
SamVerschueren Jun 13, 2025
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util: inspect: do not crash on an Error stack pointing to itself
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@SamVerschueren
SamVerschueren committed May 6, 2025
commit 8b819f9240e12d3a07fb334085222008e99b87d1
4 changes: 3 additions & 1 deletion lib/internal/util/inspect.js
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Original file line number Diff line number Diff line change
Expand Up @@ -1319,7 +1319,9 @@ function getStackString(ctx, error) {
if (typeof error.stack === 'string') {
return error.stack;
}
return formatValue(ctx, error.stack);
if (error.stack !== error) {
return formatValue(ctx, error.stack);
}
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}
return ErrorPrototypeToString(error);
}
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19 changes: 19 additions & 0 deletions test/parallel/test-util-inspect.js
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Expand Up @@ -3460,3 +3460,22 @@ ${error.stack.split('\n').slice(1).join('\n')}`,
'[[\n Symbol(foo)\n]]'
);
}

{
const prepareStackTrace = Error.prepareStackTrace;

Error.prepareStackTrace = (error) => error;

const error = new Error('foo');

assert.strictEqual(inspect(error), '[Error: foo]');

Error.prepareStackTrace = prepareStackTrace;
}

{
const error = new Error('foo');
error.stack = error

assert.strictEqual(inspect(error), '[Error: foo]');
}