Intellij-rust: Invalid duplicated name for function

[ragagno]

Environment

• IntelliJ Rust plugin version: 0.2.105.2133-192
• Rust toolchain version: 1.35.0
• IDE name and version: CLion 2019.2.2
• Operating system: Windows 10

Problem description

The plugin wrongly detects a duplicate function name. (A value named raw_match_pattern_endian has already been defined in this module [E0428]) when using conditional compilation.

Steps to reproduce

#[cfg(target_endian = "little")]
const fn raw_match_pattern_endian(original: u64) -> u64 {
    original
}

#[cfg(target_endian = "big")]
const fn raw_match_pattern_endian(original: u64) -> u64 {
    (original & 0xff) << 56 | (original & 0xff00) << 40 | (original & 0xff0000) << 24 | (original & 0xff000000) << 8 | (original & 0xff00000000) >> 8 | (original & 0xff0000000000) >> 24 | (original & 0xff000000000000) >> 40 | (original & 0xff00000000000000) >> 56
}

[aldanor]

Was also wondering about it as well, what if I have custom #[cfg(some_stuff)] and #[cfg(not(some_stuff))] next to it (which is quite a common pattern for conditionally compiled libraries). Currently the plugin reports duplicate function name.

[parkercouch]

I'm also getting this when dealing with type aliases that are conditional to the selected feature.
(Not sure if this is the right place to post this)

IntelliJ Rust plugin version: 0.2.106.2135-191
Rust toolchain version: 1.39.0
IDE name and version: CLion 2019.1.4
Operating system: macOS Catalina 10.15

/// The connection type (MySQL database).
#[cfg(feature = "mysql")]
pub type Connection = diesel::mysql::MysqlConnection;

/// The connection type (SQLite database).
#[cfg(feature = "sqlite")]
pub type Connection = diesel::sqlite::SqliteConnection;

/// The connection type (PostgreSQL database).
#[cfg(feature = "postgres")]
pub type Connection = diesel::pg::PgConnection;

[ortem]

@parkercouch Cargo features aren't supported yet (we're working on it). For more information, see https://github.com/intellij-rust/intellij-rust/pull/4488.

However, the original issue about target_endian seems to be fixed now: