Use this skill to audit a class, struct, or union for padding waste and propose a member ordering that minimizes sizeof without changing behavior. The canonical fix is to order non-static data members from largest alignment to smallest so the compiler inserts fewer alignment-padding bytes. Placing a small member such as std::uint16_t between two larger, more-strictly-aligned members forces internal padding to re-align the member that follows it; moving the small member to the end lets it share the struct's trailing slot instead. Whether that actually shrinks sizeof depends on the exact…
Cpp Struct Layout is a community-contributed Claude Code skill in the general-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/cpp-struct-layout/ and loads when your prompt matches the skill's trigger.
When to invoke it: Use when: reviewing, designing, or shrinking the in-memory layout of a C/C++ class, struct, or union to remove padding waste by reordering data members from largest to smallest alignment, or when sizeof seems larger than the sum of its members.
The Cpp Struct Layout Claude Code skill is built for Claude Code users and developers across all disciplines looking for general-purpose AI assistance. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 196,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).
mkdir -p ~/.claude/skills/cpp-struct-layout curl -L https://claudskills.com/skills/cpp-struct-layout/SKILL.md \ -o ~/.claude/skills/cpp-struct-layout/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/cpp-struct-layout/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/cpp-struct-layout/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\cpp-struct-layout\SKILL.md on Windows. See the full install guide for step-by-step instructions.
Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →
The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.
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SKILL.md from the source repository to ~/.claude/skills/cpp-struct-layout/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Cpp Struct Layout is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at /learn/what-is-a-claude-skill/.If you reference this skill in a blog post, paper, or documentation, you can cite it as:
@misc{cpp-struct-layout-2026,
author = {sjinks},
title = {Cpp Struct Layout [Claude Code skill]},
year = {2026},
publisher = {ClaudSkills},
url = {https://claudskills.com/skills/cpp-struct-layout/}
}Grade A · scanned 2026-09-28 — free static scan against the OWASP Agentic Skills Top 10.
No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›
Browse all General skills in the ClaudSkills registry, or explore these other picks from the same category:
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SKILL.md files, not affiliated with, endorsed by, or sponsored by Anthropic.