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Zig self hosted compiler is now capable of building itself (github.com)

752 points by marcthe12 · 1611 days ago · 274 comments on HN

Article summary

The Zig self-hosted compiler is now capable of building itself, marking a significant milestone for the language. This achievement is a result of the compiler's ability to use the LLVM backend to compile the compiler itself. The new compiler codebase uses significantly less memory and represents a modest performance improvement. The reduced memory usage has significant value, allowing for builds on less expensive hardware or more builds on the same hardware.

Main themes

  • Memory Management
  • Compiler Development
  • Systems Programming
  • Language Design
  • Performance Optimization
  • Garbage Collection

What commenters say

  • Some argue that explicit memory management is preferable to smart pointers and reference counting, as it allows for more control and predictability.
  • Others disagree, citing the benefits of smart pointers and reference counting in preventing memory leaks and improving code safety.
  • The use of smart pointers can be problematic if not used carefully, leading to unnecessary heap allocations and memory waste.
  • Garbage collection is proposed as a scalable solution to the problem of use after free bugs, but it comes with its own set of tradeoffs.
  • The Zig language's design and safety features make it well-suited for systems programming and memory management.
  • Some argue that the lifetime of memory managed by smart pointers is predictable and not a problem in practice.
  • Others point out that this predictability can be broken in certain situations, such as when using unsafe code or locks.