[loader] Fix zombie creation

[iamluc]

Description

Reviewer checklist

• Test coverage seems ok.
• Appropriate labels assigned.

[datadog-datadog-prod-us1]

⚠️ Tests

✨ Fix all issues with BitsAI or with Cursor

⚠️ Warnings

🧪 13 Tests failed

testSearchPhpBinaries from integration.DDTrace\Tests\Integration\PHPInstallerTest (Datadog) (Fix with Cursor)

DDTrace\Tests\Integration\PHPInstallerTest::testSearchPhpBinaries
Test code or tested code printed unexpected output: Searching for available php binaries, this operation might take a while.

phpvfscomposer://tests/vendor/phpunit/phpunit/phpunit:106

testSimplePushAndProcess from laravel-58-test.DDTrace\Tests\Integrations\Laravel\V5_8\QueueTest (Datadog) (Fix with Cursor)

DDTrace\Tests\Integrations\Laravel\V5_8\QueueTest::testSimplePushAndProcess
Test code or tested code printed unexpected output: spanLinksTraceId: 69bdd82b000000001d01316c0bf71918
tid: 69bdd82b00000000
hexProcessTraceId: 1d01316c0bf71918
hexProcessSpanId: 96c1533363ae654c
processTraceId: 2090006042203592984
processSpanId: 10863055256375158092

phpvfscomposer://tests/vendor/phpunit/phpunit/phpunit:106

testSimplePushAndProcess from laravel-8x-test.DDTrace\Tests\Integrations\Laravel\V8_x\QueueTest (Datadog) (Fix with Cursor)

DDTrace\Tests\Integrations\Laravel\V8_x\QueueTest::testSimplePushAndProcess
Test code or tested code printed unexpected output: spanLinksTraceId: 69bdd860000000006d163e5b3a0f1e11
tid: 69bdd86000000000
hexProcessTraceId: 6d163e5b3a0f1e11
hexProcessSpanId: 21347434734cf4f9
processTraceId: 7860538761158794769
processSpanId: 2392665070662120697

phpvfscomposer://tests/vendor/phpunit/phpunit/phpunit:106

View all

ℹ️ Info

No other issues found (see more)

❄️ No new flaky tests detected

_{This comment will be updated automatically if new data arrives.
🔗 Commit SHA: 8f69fee | Docs | Datadog PR Page | Was this helpful? React with 👍/👎 or give us feedback!}

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 68.73%. Comparing base (ec92fdf) to head (8f69fee).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3683      +/-   ##
==========================================
- Coverage   68.76%   68.73%   -0.04%     
==========================================
  Files         166      166              
  Lines       19030    19030              
  Branches     1797     1797              
==========================================
- Hits        13086    13080       -6     
- Misses       5128     5135       +7     
+ Partials      816      815       -1     

Flag	Coverage Δ
helper-rust-integration	78.82% <ø> (ø)
helper-rust-unit	49.36% <ø> (-0.08%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.
see 2 files with indirect coverage changes

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[pr-commenter]

Benchmarks [ tracer ]

Benchmark execution time: 2026-03-17 17:06:52

Comparing candidate commit b88cc42 in PR branch luc/loader-fix-zombies with baseline commit 8cd0131 in branch master.

Found 3 performance improvements and 2 performance regressions! Performance is the same for 187 metrics, 2 unstable metrics.

scenario:MessagePackSerializationBench/benchMessagePackSerialization

• 🟩 execution_time [-8.884µs; -7.516µs] or [-7.985%; -6.756%]

scenario:MessagePackSerializationBench/benchMessagePackSerialization-opcache

• 🟩 execution_time [-5.064µs; -3.476µs] or [-4.632%; -3.179%]

scenario:PDOBench/benchPDOOverhead

• 🟥 execution_time [+7.708µs; +11.562µs] or [+3.530%; +5.295%]

scenario:PDOBench/benchPDOOverheadWithDBM

• 🟥 execution_time [+5.630µs; +8.923µs] or [+2.576%; +4.083%]

scenario:TraceSerializationBench/benchSerializeTrace

• 🟩 execution_time [-20.632µs; -9.368µs] or [-4.688%; -2.129%]

[bwoebi]

Tests are successful, so merging.