builtin-prelude-no-accidents.rs

// Names of public modules in libstd and libcore don't accidentally get into prelude
// because macros with the same names are in prelude.

fn main() {
    env::current_dir; //~ ERROR use of undeclared crate or module `env`
    type A = panic::PanicInfo; //~ ERROR use of undeclared crate or module `panic`
    type B = vec::Vec<u8>; //~ ERROR use of undeclared crate or module `vec`
}

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// Paths
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// Entities
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// Scopes
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// Binding Scopes
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// Generic Parameter Scope
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// Item Scope
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// Label Scope
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// Self Scope
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// Textual Macro Scope
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// Scope Hierarchy
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// Namespaces
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// Preludes
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// Shadowing
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// Resolution
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// Path Resolution
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// Path Expression Resolution
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// Type Path Resolution