@panic and beginnigs of inferred error sets
* ZIR: add two instructions: - ret_err_value_code - ret_err_value * AstGen: add countDefers and utilize it to emit more efficient ZIR for return expressions in the presence of defers. * AstGen: implement |err| payloads for `errdefer` syntax. - There is not an "unused capture" error for it yet. * AstGen: `return error.Foo` syntax gets a hot path in return expressions, using the new ZIR instructions. This also is part of implementing inferred error sets, since we need to tell Sema to add an error value to the inferred error set before it gets coerced. * Sema: implement `@setCold`. - Implement `@setCold` support for C backend. * `@panic` and regular safety panics such as `unreachable` now properly invoke `std.builtin.panic`. * C backend: improve pointer and function value rendering. * C linker: fix redundant typedefs. * Add Type.error_set_inferred. * Fix Value.format for enum_literal, enum_field_index, bytes. * Remove the C backend test that checks for identical text I measured a 14% reduction in Total ZIR Bytes from master branch for std/os.zig.
A general-purpose programming language and toolchain for maintaining robust, optimal, and reusable software.
Resources
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- Chapter 0 - Getting Started | ZigLearn.org
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- download a pre-built binary
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License
The ultimate goal of the Zig project is to serve users. As a first-order effect, this means users of the compiler, helping programmers to write better software. Even more important, however, are the end-users.
Zig is intended to be used to help end-users accomplish their goals. Zig should be used to empower end-users, never to exploit them financially, or to limit their freedom to interact with hardware or software in any way.
However, such problems are best solved with social norms, not with software licenses. Any attempt to complicate the software license of Zig would risk compromising the value Zig provides.
Therefore, Zig is available under the MIT (Expat) License, and comes with a humble request: use it to make software better serve the needs of end-users.
This project redistributes code from other projects, some of which have other licenses besides MIT. Such licenses are generally similar to the MIT license for practical purposes. See the subdirectories and files inside lib/ for more details.