🧬 Related Insights?

- **Read more:** [R's Vitals Package: Finally, a Sanity Check for LLM Hype](https://theaicatchup.com/article/how-to-choose-the-best-llm-using-r-and-vitals/) - **Read more:** [Swift 6.3 Cracks Android Open – C Interop Gets Teeth](https://theaicatchup.com/article/swift-63-stabilizes-android-sdk-extends-c-interop-and-more/) Frequently Asked Questions **Does defer work in loops or conditionals in GCC and Clang?** No, not yet—defer statements are per-scope, no loop deferral until C2z. Use helpers for now. **Is defer zero-cost in performance?** Yes, compiles to gotos or handlers with negligible overhead—benchmarks confirm it. **When will defer hit stable Linux distros?** GCC 15 in Fedora 42 (mid-2025), Clang 19 already in Arch. Ubuntu lags to 26.04.

💻 Programming Languages

C's New Defer: GCC and Clang Finally Catch Go's Cleanup Trick

Picture this: a C function tangled in gotos and manual frees, now simplified with one keyword. Defer in GCC and Clang lands like a long-overdue patch for C's messiest pains.

theAIcatchup Apr 08, 2026 4 min read

Code snippet showing defer statement compiling in GCC terminal

⚡ Key Takeaways

GCC 15 and Clang 19 now compile C23's defer statement for automatic scope-exit cleanup. 𝕏
Borrowed from Go, it eliminates manual error-path frees without runtime cost. 𝕏
Accelerates C's shift to safer resource management, pulling devs from Rust/Zig. 𝕏

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theAIcatchup

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#C23 #Clang #GCC #defer statement

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Originally reported by Reddit r/programming

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