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src: fix --prof-process CLI argument handling
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Make sure that options after `--prof-process` are not treated
as Node.js options.

Fixes: #22786

PR-URL: #22790
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Bryan English <bryan@bryanenglish.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
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addaleax authored and targos committed Sep 20, 2018
1 parent 24a35f9 commit bc07612
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Showing 3 changed files with 39 additions and 1 deletion.
4 changes: 3 additions & 1 deletion lib/internal/bootstrap/node.js
Original file line number Diff line number Diff line change
Expand Up @@ -642,9 +642,11 @@
for (const [ from, expansion ] of aliases) {
let isAccepted = true;
for (const to of expansion) {
if (!to.startsWith('-')) continue;
if (!to.startsWith('-') || to === '--') continue;
const recursiveExpansion = aliases.get(to);
if (recursiveExpansion) {
if (recursiveExpansion[0] === to)
recursiveExpansion.splice(0, 1);
expansion.push(...recursiveExpansion);
continue;
}
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2 changes: 2 additions & 0 deletions src/node_options.cc
Original file line number Diff line number Diff line change
Expand Up @@ -108,6 +108,8 @@ EnvironmentOptionsParser::EnvironmentOptionsParser() {
AddOption("--prof-process",
"process V8 profiler output generated using --prof",
&EnvironmentOptions::prof_process);
// Options after --prof-process are passed through to the prof processor.
AddAlias("--prof-process", { "--prof-process", "--" });
AddOption("--redirect-warnings",
"write warnings to file instead of stderr",
&EnvironmentOptions::redirect_warnings,
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34 changes: 34 additions & 0 deletions test/parallel/test-tick-processor-arguments.js
Original file line number Diff line number Diff line change
@@ -0,0 +1,34 @@
'use strict';
const common = require('../common');
const tmpdir = require('../common/tmpdir');
const fs = require('fs');
const assert = require('assert');
const { spawnSync } = require('child_process');

if (!common.isMainThread)
common.skip('chdir not available in workers');
if (!common.enoughTestMem)
common.skip('skipped due to memory requirements');
if (common.isAIX)
common.skip('does not work on AIX');

tmpdir.refresh();
process.chdir(tmpdir.path);

// Generate log file.
spawnSync(process.execPath, [ '--prof', '-p', '42' ]);

const logfile = fs.readdirSync('.').filter((name) => name.endsWith('.log'))[0];
assert(logfile);

// Make sure that the --preprocess argument is passed through correctly,
// as an example flag listed in deps/v8/tools/tickprocessor.js.
// Any of the other flags there should work for this test too, if --preprocess
// is ever removed.
const { stdout } = spawnSync(
process.execPath,
[ '--prof-process', '--preprocess', logfile ],
{ encoding: 'utf8' });

// Make sure that the result is valid JSON.
JSON.parse(stdout);

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