From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:02:58 +0200 Subject: Adding upstream version 1.64.0+dfsg1. Signed-off-by: Daniel Baumann --- src/test/ui/generator/retain-resume-ref.rs | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 src/test/ui/generator/retain-resume-ref.rs (limited to 'src/test/ui/generator/retain-resume-ref.rs') diff --git a/src/test/ui/generator/retain-resume-ref.rs b/src/test/ui/generator/retain-resume-ref.rs new file mode 100644 index 000000000..0606ea71c --- /dev/null +++ b/src/test/ui/generator/retain-resume-ref.rs @@ -0,0 +1,25 @@ +//! This test ensures that a mutable reference cannot be passed as a resume argument twice. + +#![feature(generators, generator_trait)] + +use std::marker::Unpin; +use std::ops::{ + Generator, + GeneratorState::{self, *}, +}; +use std::pin::Pin; + +fn main() { + let mut thing = String::from("hello"); + + let mut gen = |r| { + if false { + yield r; + } + }; + + let mut gen = Pin::new(&mut gen); + gen.as_mut().resume(&mut thing); + gen.as_mut().resume(&mut thing); + //~^ cannot borrow `thing` as mutable more than once at a time +} -- cgit v1.2.3