Rust — Intentionally Invalid
Intentionally invalid Rust for rustc error-path fixtures.
fn main() {
let x = {
println!("missing brace");
}
Specifications
- Language
- rust
- Role
- intentionally invalid
- Valid
- false
What is a .rs file?
Rust (.rs) is a plain-text source file for the Rust programming language — a statically typed, compiled systems language focused on memory safety without a garbage collector, enforced by its ownership and borrow checker. It features enums with data, pattern matching, traits, generics, and a strong type system.
How to use this file
Use an example .rs file to test syntax highlighters, the rustc compiler and cargo, rustfmt and clippy, and parser or language-detection tooling against real Rust constructs.
How to use this file for testing
“Rust — Intentionally Invalid” is a deterministic Novus Examples fixture for Error handling, Code parsing, Editor testing. Deliberately corrupt and invalid files, clearly labelled, for testing how your tool fails.
Documented properties for this file: intentionally invalid · rust · intentionally invalid. Compare results against paired or grouped companions on this page when present (clean↔damaged, searchable↔scanned, or format twins) so scores stay reproducible across runs.
Download the file once, keep the path stable in CI or local scripts, and treat the spec table as the contract: dimensions, seeds, field lists, and roles are intentional. Corrupt or invalid samples are labelled as such — expect parsers to fail loudly rather than silently accept them.
This is a short, known-correct source file. Run it through your syntax highlighter, linter, formatter, tree-sitter grammar, or parser, and open it in the in-browser editor to tweak and re-download. Each snippet exercises comments, string escapes, literals, and language keywords.
Code examples
rustc intentionally-invalid-rust.rs -o prog && ./progRelated files
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- hsHaskell — Intentionally InvalidIntentionally invalid Haskell (unterminated string) for parser failure tests.

- jsJavaScript — Intentionally Invalid SyntaxIntentionally corrupt JavaScript object literal — labelled invalid for error handling. Labelled intentionally invalid in title and description.

- jsonJSON — Intentionally Invalid (Lint Fixture)Intentionally invalid JSON (unquoted key + trailing) for strict parser failure tests. Labelled intentionally invalid in title and description.

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