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src: fix crash in GetErrorSource() for invalid using syntax #62770

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src: fix crash in GetErrorSource() for invalid using syntax #62770

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4 changes: 2 additions & 2 deletions src/node_errors.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -150,8 +150,7 @@ static std::string GetErrorSource(Isolate* isolate,
: 0;
int start = message->GetStartColumn(context).FromMaybe(0);
int end = message->GetEndColumn(context).FromMaybe(0);
if (start >= script_start) {
CHECK_GE(end, start);
if (start >= script_start && end >= script_start) {
start -= script_start;
end -= script_start;
}
Expand All @@ -163,6 +162,7 @@ static std::string GetErrorSource(Isolate* isolate,

if (start > end ||
start < 0 ||
end < 0 ||
static_cast<size_t>(end) > sourceline.size()) {
return buf;
}
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23 changes: 23 additions & 0 deletions test/parallel/test-cli-eval-invalid-using.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,23 @@
'use strict';

require('../common');
const assert = require('assert');
const { spawnSyncAndAssert } = require('../common/child_process');

[
'{using x=null, []=null;}',
'{using x=null, {}=null;}',
'async function f() { { await using x=null, []=null; } }',
'async function f() { { await using x=null, {}=null; } }',
Comment on lines +10 to +11
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@aduh95 aduh95 Apr 16, 2026

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Suggested change
'async function f() { { await using x=null, []=null; } }',
'async function f() { { await using x=null, {}=null; } }',
'async function f() { await using x=null, []=null; }',
'async function f() { await using x=null, {}=null; }',

or even

Suggested change
'async function f() { { await using x=null, []=null; } }',
'async function f() { { await using x=null, {}=null; } }',
'{ await using x=null, []=null; }',
'{ await using x=null, {}=null; }',

].forEach((script) => {
spawnSyncAndAssert(process.execPath, ['--eval', script], {
status: 1,
signal: null,
stderr(output) {
assert.match(output, /SyntaxError/);
assert.doesNotMatch(output, /Assertion failed/);
assert.doesNotMatch(output, /Native stack trace/);
},
stdout: '',
});
});
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