From 317eac3277ccfa9b3cd159760041964253d17ef5 Mon Sep 17 00:00:00 2001 From: Ryan Prichard Date: Thu, 16 Apr 2015 21:49:53 -0700 Subject: Call write_fmt directly to format an Arguments value. It's just as convenient, but it's much faster. Using write! requires an extra call to fmt::write and a extra dynamically dispatched call to Arguments' Display format function. --- src/libstd/rt/unwind.rs | 2 +- src/libstd/rt/util.rs | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'src/libstd') diff --git a/src/libstd/rt/unwind.rs b/src/libstd/rt/unwind.rs index b118010a0cc..c880aae80fc 100644 --- a/src/libstd/rt/unwind.rs +++ b/src/libstd/rt/unwind.rs @@ -504,7 +504,7 @@ pub fn begin_unwind_fmt(msg: fmt::Arguments, file_line: &(&'static str, u32)) -> // below). let mut s = String::new(); - let _ = write!(&mut s, "{}", msg); + let _ = s.write_fmt(msg); begin_unwind_inner(Box::new(s), file_line) } diff --git a/src/libstd/rt/util.rs b/src/libstd/rt/util.rs index 5a482fbb50f..9919238c208 100644 --- a/src/libstd/rt/util.rs +++ b/src/libstd/rt/util.rs @@ -65,7 +65,7 @@ pub const ENFORCE_SANITY: bool = true || !cfg!(rtopt) || cfg!(rtdebug) || cfg!(rtassert); pub fn dumb_print(args: fmt::Arguments) { - let _ = write!(&mut Stderr::new(), "{}", args); + let _ = Stderr::new().write_fmt(args); } pub fn abort(args: fmt::Arguments) -> ! { -- cgit 1.4.1-3-g733a5