From 218caa410aa38c29984be31a5229b9fa717560ee Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:19:13 +0200 Subject: Merging upstream version 1.68.2+dfsg1. Signed-off-by: Daniel Baumann --- tests/ui/lifetimes/bare-trait-object-borrowck.rs | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 tests/ui/lifetimes/bare-trait-object-borrowck.rs (limited to 'tests/ui/lifetimes/bare-trait-object-borrowck.rs') diff --git a/tests/ui/lifetimes/bare-trait-object-borrowck.rs b/tests/ui/lifetimes/bare-trait-object-borrowck.rs new file mode 100644 index 000000000..45f5e4ae1 --- /dev/null +++ b/tests/ui/lifetimes/bare-trait-object-borrowck.rs @@ -0,0 +1,24 @@ +#![allow(bare_trait_objects)] +// check-pass +pub struct FormatWith<'a, I, F> { + sep: &'a str, + /// FormatWith uses interior mutability because Display::fmt takes &self. + inner: RefCell>, +} + +use std::cell::RefCell; +use std::fmt; + +struct Layout; + +pub fn new_format<'a, I, F>(iter: I, separator: &'a str, f: F) -> FormatWith<'a, I, F> +where + I: Iterator, + F: FnMut(I::Item, &mut FnMut(&fmt::Display) -> fmt::Result) -> fmt::Result, +{ + FormatWith { sep: separator, inner: RefCell::new(Some((iter, f))) } +} + +fn main() { + let _ = new_format(0..32, " | ", |i, f| f(&format_args!("0x{:x}", i))); +} -- cgit v1.2.3