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/dropck.rs | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 src/test/ui/generator/dropck.rs (limited to 'src/test/ui/generator/dropck.rs') diff --git a/src/test/ui/generator/dropck.rs b/src/test/ui/generator/dropck.rs new file mode 100644 index 000000000..f82111a76 --- /dev/null +++ b/src/test/ui/generator/dropck.rs @@ -0,0 +1,20 @@ +#![feature(generators, generator_trait)] + +use std::cell::RefCell; +use std::ops::Generator; +use std::pin::Pin; + +fn main() { + let (mut gen, cell); + cell = Box::new(RefCell::new(0)); + let ref_ = Box::leak(Box::new(Some(cell.borrow_mut()))); + //~^ ERROR `*cell` does not live long enough [E0597] + // the upvar is the non-dropck `&mut Option>`. + gen = || { + // but the generator can use it to drop a `Ref<'a, i32>`. + let _d = ref_.take(); //~ ERROR `ref_` does not live long enough + yield; + }; + Pin::new(&mut gen).resume(()); + // drops the RefCell and then the Ref, leading to use-after-free +} -- cgit v1.2.3