Help debugging a Windows-only 0xc0000005 crash while decoding real-device HEIC files

Hi everyone, I maintain offpdf, an open-source, offline PDF toolkit built with Tauri and Rust. We are trying to support HEIC/HEIF-to-PDF conversion on Windows, but we have reached a native crash that we have not been able to explain yet. What we know: Two independent real-device HEIC files—one from an iPhone and one from an Android device—immediately terminate the packaged Windows 11 x64 application during import. Both crashes produce exception code 0xc0000005 at the same executable offset:...