diff options
Diffstat (limited to 'src/libstd/io/stdio.rs')
| -rw-r--r-- | src/libstd/io/stdio.rs | 22 | 
1 files changed, 8 insertions, 14 deletions
| diff --git a/src/libstd/io/stdio.rs b/src/libstd/io/stdio.rs index fb489bf487b..d71fa133454 100644 --- a/src/libstd/io/stdio.rs +++ b/src/libstd/io/stdio.rs @@ -17,7 +17,7 @@ use io::{self, Initializer, BufReader, LineWriter}; use sync::{Arc, Mutex, MutexGuard}; use sys::stdio; use sys_common::remutex::{ReentrantMutex, ReentrantMutexGuard}; -use thread::{LocalKey, LocalKeyState}; +use thread::LocalKey; /// Stdout used by print! and println! macros thread_local! { @@ -674,20 +674,14 @@ fn print_to<T>(args: fmt::Arguments, local_s: &'static LocalKey<RefCell<Option<Box<Write+Send>>>>, global_s: fn() -> T, label: &str) where T: Write { - let result = match local_s.state() { - LocalKeyState::Uninitialized | - LocalKeyState::Destroyed => global_s().write_fmt(args), - LocalKeyState::Valid => { - local_s.with(|s| { - if let Ok(mut borrowed) = s.try_borrow_mut() { - if let Some(w) = borrowed.as_mut() { - return w.write_fmt(args); - } - } - global_s().write_fmt(args) - }) + let result = local_s.try_with(|s| { + if let Ok(mut borrowed) = s.try_borrow_mut() { + if let Some(w) = borrowed.as_mut() { + return w.write_fmt(args); + } } - }; + global_s().write_fmt(args) + }).unwrap_or_else(|_| global_s().write_fmt(args)); if let Err(e) = result { panic!("failed printing to {}: {}", label, e); } | 
