From 7ec1de062a1aadef0293bb65e71fbcc7cc24ebfd Mon Sep 17 00:00:00 2001 From: Kornel Date: Thu, 27 Aug 2020 13:27:14 +0100 Subject: Clarify message about unresolved use --- compiler/rustc_error_codes/src/error_codes/E0433.md | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) (limited to 'compiler/rustc_error_codes') diff --git a/compiler/rustc_error_codes/src/error_codes/E0433.md b/compiler/rustc_error_codes/src/error_codes/E0433.md index f9e333e8ccd..5a64c13c9af 100644 --- a/compiler/rustc_error_codes/src/error_codes/E0433.md +++ b/compiler/rustc_error_codes/src/error_codes/E0433.md @@ -1,17 +1,27 @@ -An undeclared type or module was used. +An undeclared crate, module, or type was used. Erroneous code example: ```compile_fail,E0433 let map = HashMap::new(); -// error: failed to resolve: use of undeclared type or module `HashMap` +// error: failed to resolve: use of undeclared type `HashMap` ``` Please verify you didn't misspell the type/module's name or that you didn't forget to import it: - ``` use std::collections::HashMap; // HashMap has been imported. let map: HashMap = HashMap::new(); // So it can be used! ``` + +If you've expected to use a crate name: + +```compile_fail +use ferris_wheel::BigO; +// error: failed to resolve: use of undeclared crate or module `ferris_wheel` +``` + +Make sure the crate has been added as a dependency in `Cargo.toml`. + +To use a module from your current crate, add the `crate::` prefix to the path. -- cgit 1.4.1-3-g733a5