setup boilerplate and tests for 6-dup

Author: oslfmt

lints/duplicate-mutable-accounts/.cargo/config.toml

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+[target.aarch64-apple-darwin]
+linker = "dylint-link"
+
+[target.x86_64-apple-darwin]
+linker = "dylint-link"
+
+[target.x86_64-unknown-linux-gnu]
+linker = "dylint-link"
+
+[target.x86_64-pc-windows-msvc]
+linker = "dylint-link"

lints/duplicate-mutable-accounts/.gitignore

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+/target
+/Cargo.lock

lints/duplicate-mutable-accounts/Cargo.toml

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+[package]
+name = "duplicate_mutable_accounts"
+version = "0.1.0"
+authors = ["authors go here"]
+description = "decription goes here"
+edition = "2018"
+publish = false
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+clippy_utils = { git = "https://github.com/rust-lang/rust-clippy", rev = "7b2896a8fc9f0b275692677ee6d2d66a7cbde16a" }
+dylint_linting = "2.0.1"
+if_chain = "1.0.2"
+
+[dev-dependencies]
+dylint_testing = "2.0.1"
+
+[package.metadata.rust-analyzer]
+rustc_private = true

lints/duplicate-mutable-accounts/rust-toolchain

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+[toolchain]
+channel = "nightly-2022-02-24"
+components = ["llvm-tools-preview", "rustc-dev"]

lints/duplicate-mutable-accounts/src/lib.rs

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+#![feature(rustc_private)]
+#![warn(unused_extern_crates)]
+
+extern crate rustc_ast;
+extern crate rustc_ast_pretty;
+extern crate rustc_data_structures;
+extern crate rustc_errors;
+extern crate rustc_hir;
+extern crate rustc_hir_pretty;
+extern crate rustc_index;
+extern crate rustc_infer;
+extern crate rustc_lexer;
+extern crate rustc_middle;
+extern crate rustc_mir_dataflow;
+extern crate rustc_parse;
+extern crate rustc_parse_format;
+extern crate rustc_span;
+extern crate rustc_target;
+extern crate rustc_trait_selection;
+extern crate rustc_typeck;
+
+use rustc_lint::LateLintPass;
+
+dylint_linting::declare_late_lint! {
+    /// **What it does:**
+    ///
+    /// **Why is this bad?**
+    ///
+    /// **Known problems:** None.
+    ///
+    /// **Example:**
+    ///
+    /// ```rust
+    /// // example code where a warning is issued
+    /// ```
+    /// Use instead:
+    /// ```rust
+    /// // example code that does not raise a warning
+    /// ```
+    pub DUPLICATE_MUTABLE_ACCOUNTS,
+    Warn,
+    "description goes here"
+}
+
+impl<'tcx> LateLintPass<'tcx> for DuplicateMutableAccounts {
+    // A list of things you might check can be found here:
+    // https://doc.rust-lang.org/stable/nightly-rustc/rustc_lint/trait.LateLintPass.html
+}
+
+#[test]
+fn ui() {
+    dylint_testing::ui_test(
+        env!("CARGO_PKG_NAME"),
+        &std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("ui"),
+    );
+}

lints/duplicate-mutable-accounts/ui/insecure/Cargo.toml

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+[package]
+name = "duplicate-mutable-accounts-insecure"
+version = "0.1.0"
+description = "Created with Anchor"
+edition = "2018"
+
+[lib]
+crate-type = ["cdylib", "lib"]
+name = "duplicate_mutable_accounts_insecure"
+
+[features]
+no-entrypoint = []
+no-idl = []
+no-log-ix-name = []
+cpi = ["no-entrypoint"]
+default = []
+
+[dependencies]
+anchor-lang = "0.20.1"

lints/duplicate-mutable-accounts/ui/insecure/Xargo.toml

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+[target.bpfel-unknown-unknown.dependencies.std]
+features = []

lints/duplicate-mutable-accounts/ui/insecure/src/lib.rs

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+use anchor_lang::prelude::*;
+
+declare_id!("Fg6PaFpoGXkYsidMpWTK6W2BeZ7FEfcYkg476zPFsLnS");
+
+#[program]
+pub mod duplicate_mutable_accounts_insecure {
+    use super::*;
+
+    pub fn update(ctx: Context<Update>, a: u64, b: u64) -> ProgramResult {
+        let user_a = &mut ctx.accounts.user_a;
+        let user_b = &mut ctx.accounts.user_b;
+
+        user_a.data = a;
+        user_b.data = b;
+        Ok(())
+    }
+}
+
+#[derive(Accounts)]
+pub struct Update<'info> {
+    user_a: Account<'info, User>,
+    user_b: Account<'info, User>,
+}
+
+#[account]
+pub struct User {
+    data: u64,
+}

lints/duplicate-mutable-accounts/ui/secure/Cargo.toml

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+[package]
+name = "duplicate-mutable-accounts-secure"
+version = "0.1.0"
+description = "Created with Anchor"
+edition = "2018"
+
+[lib]
+crate-type = ["cdylib", "lib"]
+name = "duplicate_mutable_accounts_secure"
+
+[features]
+no-entrypoint = []
+no-idl = []
+no-log-ix-name = []
+cpi = ["no-entrypoint"]
+default = []
+
+[dependencies]
+anchor-lang = "0.20.1"

lints/duplicate-mutable-accounts/ui/secure/Xargo.toml

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+[target.bpfel-unknown-unknown.dependencies.std]
+features = []