mirror of https://github.com/rust-lang/rust
41 lines
1.7 KiB
Rust
41 lines
1.7 KiB
Rust
//@ compile-flags: --edition=2021
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//@ run-rustfix
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pub struct Struct<T> {
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pub p: T,
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}
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impl<T> Struct<T> {
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pub fn method(&self) {}
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pub fn some_mutable_method(&mut self) {}
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}
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fn main() {
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let other_item = std::cell::RefCell::new(Struct { p: 42_u32 });
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other_item.borrow().method();
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//~^ ERROR no method named `method` found for struct `RefCell` in the current scope [E0599]
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//~| HELP use `.borrow()` to borrow the `Struct<u32>`, panicking if a mutable borrow exists
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other_item.borrow_mut().some_mutable_method();
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//~^ ERROR no method named `some_mutable_method` found for struct `RefCell` in the current scope [E0599]
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//~| HELP .borrow_mut()` to mutably borrow the `Struct<u32>`, panicking if any borrows exist
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let another_item = std::sync::Mutex::new(Struct { p: 42_u32 });
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another_item.lock().unwrap().method();
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//~^ ERROR no method named `method` found for struct `Mutex` in the current scope [E0599]
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//~| HELP use `.lock().unwrap()` to borrow the `Struct<u32>`, blocking the current thread until it can be acquired
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let another_item = std::sync::RwLock::new(Struct { p: 42_u32 });
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another_item.read().unwrap().method();
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//~^ ERROR no method named `method` found for struct `RwLock` in the current scope [E0599]
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//~| HELP use `.read().unwrap()` to borrow the `Struct<u32>`, blocking the current thread until it can be acquired
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another_item.write().unwrap().some_mutable_method();
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//~^ ERROR no method named `some_mutable_method` found for struct `RwLock` in the current scope [E0599]
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//~| HELP use `.write().unwrap()` to mutably borrow the `Struct<u32>`, blocking the current thread until it can be acquired
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}
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