Skip to content
Learn Netverks

Lesson

Step 35/36 97% through track

production-checklist

Production checklist

Last reviewed May 28, 2026 Content v20260528
Track mode
server_compiled
Means
Compiled runner
Reading
~1 min
Level
advanced

This lesson

This lesson teaches Production checklist: the syntax, patterns, and safety habits you need before advancing in C.

Teams still ship Production checklist in C codebases—skipping it leaves gaps in debugging and code reviews.

You will apply Production checklist in contexts like: Kernels, drivers, embedded devices, and performance libraries used by other languages.

Write C in main.c with int main(), click Run on server—the dev runner compiles with cc/gcc -std=c11 and runs the binary; read stderr for compile and linker errors (LEARNING_RUNNER_ENABLED=true).

When pointers, structs, and basic control flow from intermediate lessons are familiar.

Shipping C means more than compiling—enable warnings, use sanitizers in CI, audit dependencies, and document memory ownership in APIs.

Checklist

  • -Wall -Wextra -Werror in CI
  • AddressSanitizer / UBSan in test builds
  • Static analysis (clang-tidy, cppcheck)
  • Bounded string functions (snprintf, strncpy with care)
  • Fuzz critical parsers (libFuzzer, AFL)
  • Pin compiler versions for reproducible builds

Important interview questions and answers

  1. Q: Why -Werror?
    A: Treats warnings as build failures—prevents shipping latent bugs.
  2. Q: How prevent buffer overflows?
    A: Bounds checks, safe APIs, sanitizers, and code review on all pointer arithmetic.

Self-check

  1. What sanitizer catches use-after-free?
  2. Why pin compiler versions in release builds?

Interview prep

Why -Werror in CI?

Prevents merging code with warnings that often indicate real bugs—especially format string and pointer issues.

Sanitizers in CI?

AddressSanitizer and UBSan catch memory errors during automated tests before production.

Interview tip Lesson completion confidence

Can you explain this lesson in 30 seconds without reading notes?

Not saved yet.

Playground

Runs on the configured server runner (dev: npm run runner with LEARNING_RUNNER_ENABLED=true). Output appears below the editor.

Check yourself

Multiple choice — immediate feedback.

Discussion

Past discussion is visible to everyone. Only logged-in users can post comments and replies.

Starter discussion topics

  • -Wall -Wextra?
  • Sanitizers when?

Sign up or log in to post comments and sync lesson progress across devices.

No discussion yet. Be the first to ask a question.

Jump

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36