test(profiling): ASAN test for #3898

[realFlowControl]

Description

Adds a test for #3898 / #3896

This does not yet trigger in CI and that is because we do not run profiler tests against ZTS ASAN because the ZTS ASAN images we prebuild only have DEBUG ZTS ASAN and no NDEBUG version, but the profiler does not build against DEBUG PHP builds.

I hacked this a bit locally and not only does this newly added test fail, but also the other preloading test:

  Number of tests : 40
  Tests skipped   : 11
  Tests failed    : 2
  Tests passed    : 27

  Failed tests:

  [profiling] Profiling should only be enabled after preloading has happened
  [profiling] ASAN regression: ZTS preloading must not duplicate INI values from themselves

  ASAN caught the expected issue:

  ERROR: AddressSanitizer: heap-use-after-free
  READ of size 4
  #0 zend_string_dup .../Zend/zend_string.h:217
  #1 zai_config_ini_rinit .../zend_abstract_interface/config/config_ini.c:429
  ...
  freed by thread T0 here:
  #1 zend_string_release .../Zend/zend_string.h:339
  #2 zai_config_ini_rinit .../zend_abstract_interface/config/config_ini.c:428

[datadog-prod-us1-5]

 

✨ Fix all issues with BitsAI

⚠️ Warnings

🚦 3 Pipeline jobs failed

DataDog/apm-reliability/dd-trace-php | test_extension_ci: [8.2]     

🔧 Fix in code (Fix with Cursor).

1 failed test. Error: Assert that the default environment can be read from agent info in dd_trace_agent_env.phpt.

DataDog/apm-reliability/dd-trace-php | helper-rust integration coverage     

🔄 Retry job. This looks flaky and may succeed on retry.

Failed to write archive entry contents due to ConnectionReset: reqwest::Error: source hyper::Error (Io connection reset).

DataDog/apm-reliability/dd-trace-php | test_extension_ci: [8.4]     

🛟 This job is unlikely to succeed on retry. Please review your pipeline configuration.

Failed to install live debugger span decoration probe. Error: command terminated with exit code 2.

ℹ️ Info

No other issues found (see more)

🧪 All tests passed
❄️ No new flaky tests detected

🎯 Code Coverage (details)
• Patch Coverage: 100.00%
• Overall Coverage: 60.70% (-0.05%)

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[pr-commenter]

Benchmarks [ profiler ]

Benchmark execution time: 2026-05-22 11:57:16

Comparing candidate commit 2f8ce94 in PR branch florian/test-3898 with baseline commit 0fb4c56 in branch master.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 27 metrics, 9 unstable metrics.

[realFlowControl]

We already have a test that fails, it is just not executed, as we where missing ZTS ASAN tests, but #3908 adds these