polyglot-rust-c

Polyglot source files use shared syntax patterns, comment-driven hiding, and preprocessor blocks to compile correctly with both rustc and g++/gcc. Structure your code so each compiler ignores the other's syntax while executing common logic.

Comment-driven hiding leverages multi-line comments (`/* */`) that Rust and C both recognize, preprocessor directives (`#ifdef`, `#endif`) that conditionally exclude code, and shared syntax islands where both languages overlap.

Yes. Polyglot Rust/C source files work for CTF tasks, security puzzles, and dual-language learning. Verify compilation and runtime correctness with both compilers and cross-validate functional output across environments.

Start with a minimal skeleton that compiles in both rustc and g++/gcc, then add features phase-by-phase while running both compilers and checking runtime output. Use a verification checklist to confirm successful cross-compiler validation.

You need Rust compiler (rustc), C/C++ compiler (gcc or g++), and understanding of syntax that both languages share. Knowledge of preprocessor directives and comment styles is essential for hiding language-specific code.

Polyglot source unifies dual-language logic in a single file, reducing code duplication and maintenance burden. It's useful for educational demonstrations, CTF obfuscation, and proving cross-language compatibility.