Rust implementation of C's va_list type

Overview

This crate provides a rust VaListtype, which is binary-compatible for the C va_list type. It is intended to allow rust code to provide the complex logic of variable argument functions.

Example

extern crate va_list;
use va_list::VaList;

extern "C" print_ints_va(count: u32, mut args: VaList)
{
	for i in (0 .. count) {
		println!("{}: {}", i, args.get::<i32>());
	}
}

Status

• x86_64 ELF (aka System-V)
  • Linux: CI tested, and used in the wild
• aarch64 ELF: Minimal testing
  • Unix (not macos)
• cdecl32 32-bit: Minimal testing
  • Unix x86/arm32
  • Windows
• cdecl 64-bit: CI tested
  • macos amd64
  • Windows
  • Unix riscv64
  • unix loongarch64

License

Licensed under either of

• Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.