bug-verify

The final verification step for a PHP core bug fix. It runs relevant tests and checks, including nearby extensions, compiler warnings, and optionally broader or memory-error checks.

In plain words
What is it for?
Use it after implementing a php-src fix to run related and dependent tests, compare compiler warnings with the original source revision, optionally use AddressSanitizer or Valgrind, and mark the task complete.
Why use it?
It checks that the fix solves the reported problem without breaking related PHP behavior or introducing new build warnings. The results are recorded in SPEC.md.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/pronskiy/php-src-developer/bug-verify
Any agent
npx skills add pronskiy/php-src-developer --skill bug-verify
Clone the repo
git clone --depth 1 https://github.com/pronskiy/php-src-developer

Made for: Claude Code, Codex.

Per session 104 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,639 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00104 $0.02639
Opus 5 $0.00052 $0.01319
Sonnet 5 $0.00021 $0.00528
Haiku 4.5 $0.00010 $0.00264

Measured yesterday against content hash 394656cda68d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

bug-verify scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/php-core-developer/skills/bug-verify/SKILL.md · 214 lines

How it starts

The opening of the file, as written. The whole thing — 214 lines — stays where its author put it; the contents beside it link to each section on GitHub.

bug-verify

Fourth and last step of the bug-fix flow. Owns the Verification phase. Confirms the fix doesn't regress nearby tests and doesn't introduce new compiler warnings.

Inputs

  1. SPEC.md in the task directory resolved per _shared/task-dir.md (env var → .current → cwd), type: bug, Implementation phase done.
  2. $PHP_SRC_DIR with the post-fix sapi/cli/php built.

What it produces

  • Updated SPEC.md: Verification phase done (or blocked with reasons), top-level status: done.
  • A summary suitable for the user's commit / PR description.

Phase owned

Verification.

Steps this skill adds (some are optional):

  • related-testsmake TESTS=<related-dir> test or run-tests.php <related-dir> passes.
  • dependents-tests — extensions that link against (or #include headers from) the changed translation unit pass their own test directories. Always added by default; one sub-step per dependent extension that triggers any new failure. Catches the cross-extension regression case where e.g. a change in ext/date breaks ext/spl.
  • warnings-clean — no new compiler warnings versus php_src_ref (the SHA recorded in SPEC.md frontmatter).
  • full-test (optional)make test; only added if the user explicitly asks.
  • valgrind / asan (optional) — only for memory-sensitive fixes; only on user request.

Workflow

1. Pre-guardrails

  • SPEC.md type: bug, Implementation phase done. Refuse otherwise.
  • The new .phpt from Reproduction is recorded.

2. Choose the related test directory

From the Implementation steps (impl-N) and the Reproduction test path, pick the nearest meaningful test directory:

Changed file Related test dir
ext/<name>/... ext/<name>/tests/
Zend/... Zend/tests/
main/streams/... tests/streams/
sapi/<name>/... sapi/<name>/tests/

If the change touches multiple subsystems, run each. Add a related-tests step per directory.

3. Run related tests

Read the full file on GitHub · 214 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday First seen · 214 lines · 104 tokens per session scan A 394656cda68d

Subscribe to this mod's changes

bug-verify is a skill published in the GitHub repository pronskiy/php-src-developer (8 stars, last pushed 3mo ago), licensed MIT. It adds 104 tokens to every session and 2,639 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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