c-systems-development

name	c-systems-development
description	Develop, review, debug, and optimize C/C++ systems code. Use for embedded software, Linux services, native libraries, memory safety, concurrency, performance, build systems, and hardware-facing code.

C Systems Development

Purpose

Help engineers work on C and C++ code with attention to correctness, memory safety, portability, and hardware constraints.

Workflow

1. Identify target platform, compiler, standard version, build system, and runtime constraints.
2. Inspect ownership, lifetime, allocation, error handling, thread-safety, and ABI boundaries.
3. Prefer simple data structures and explicit ownership over hidden global state.
4. For bugs, produce a minimal reproduction or targeted test before large refactors.
5. For performance, measure first and distinguish algorithmic cost from cache, allocation, syscall, and synchronization costs.

Checklist

• Bounds checks, integer overflow, signed/unsigned conversions.
• Null handling and cleanup on all error paths.
• Race conditions, lock ordering, atomics, and memory barriers.
• Undefined behavior, strict aliasing, alignment, and lifetime.
• Sanitizers: ASan, UBSan, TSan, MSan where applicable.
• Build flags, warnings, static analysis, and cross-compilation.

Output

Return findings or changes with:

• Risk summary.
• Exact files/functions when available.
• Tests or commands to verify.
• Remaining assumptions.