libc 0.2.190: libc::pid_t

# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
version = 4

[[package]]
name = "libc"
version = "0.2.190"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ce5d3ddc6d3fa000eb1536d85e147bfe31aacaba692ed6a876f95cb7c855be78"

[[package]]
name = "sample-libc-pid-t"
version = "0.1.0"
dependencies = [
 "libc",
]

[package]
name = "sample-libc-pid-t"
version = "0.1.0"
edition = "2021"

[dependencies]
libc = "=0.2.190"

Clean-room public code sample — generation instructions

Write a brand-new, minimal, self-contained code sample in this clean-room directory.
Do not copy, paraphrase, or reference any existing project source. Work only from this spec.

A csx.json manifest scaffold already exists. Do not recreate it from memory. Preserve its case.goal, packages and symbols; fill its empty case.contract with exact assertions and correct its environment, commands and verifierAdapter for the files you generate.

Goal: verify libc::pid_t in pkg:cargo/libc@0.2.190
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:cargo/libc@0.2.190
Demonstrate these symbols/APIs:
  - libc::pid_t

Rules:
  - One focused purpose; the smallest project that proves the goal.
  - Include a contract test (test/contract.*) that runs OFFLINE and exits 0 exactly when the goal behavior works.
  - Pin every dependency with a lockfile so resolution is reproducible.
  - No secrets, credentials, or tokens. No real URLs (only example.com or localhost). No absolute paths.
  - No personal names, emails, company names, or project identifiers of any kind.
  - No binaries and no generated output (node_modules, dist, target, venv, .git, .env).
  - Keep it under 200 files and 256KB packed.

{"case":{"caseId":"case:sha256:a15751700ce63dc3958a35423bb9bf8e19e4b6a62a3666dd395de834c0da7eb6","contract":["libc::pid_t is a 32-bit signed integer type alias (i32) with size 4 and alignment 4 on Linux","unsafe { libc::getpid() } and unsafe { libc::getppid() } return values of type libc::pid_t where getpid() \u003e 0"],"goal":"verify libc::pid_t in pkg:cargo/libc@0.2.190","kind":"HOW","packages":["pkg:cargo/libc@0.2.190"],"schemaVersion":1,"symbols":["libc::pid_t"]},"contractCommand":["cargo","run","--offline"],"environment":{"arch":"x64","ecosystem":"cargo","os":"linux","packageManager":"cargo","schemaVersion":1},"license":"MIT-0","packages":["pkg:cargo/libc@0.2.190"],"schemaVersion":1,"subject":"pkg:cargo/libc@0.2.190","symbols":["libc::pid_t"],"verifierAdapter":"cargo@1"}

{
  "schemaVersion": 1,
  "goal": "verify libc::pid_t in pkg:cargo/libc@0.2.190",
  "kind": "HOW",
  "packages": [
    "pkg:cargo/libc@0.2.190"
  ],
  "symbols": [
    "libc::pid_t"
  ]
}

use libc::{getppid, getpid, pid_t};
use std::mem::{align_of, size_of};

fn main() {
    let pid: pid_t = unsafe { getpid() };
    let ppid: pid_t = unsafe { getppid() };

    assert!(pid > 0, "current process pid_t must be positive");
    assert!(ppid >= 0, "parent process pid_t must be non-negative");
    assert_eq!(size_of::<pid_t>(), 4);
    assert_eq!(align_of::<pid_t>(), 4);

    let typed_zero: pid_t = 0i32;
    assert_eq!(typed_zero, 0);
}