---

yaml
---
r: 91990
b: refs/heads/auto
c: bfba120
h: refs/heads/master
v: v3

Author: alexcrichton

[refs]

@@ -13,7 +13,7 @@ refs/heads/try3: 9387340aab40a73e8424c48fd42f0c521a4875c0
 refs/tags/release-0.3.1: 495bae036dfe5ec6ceafd3312b4dca48741e845b
 refs/tags/release-0.4: e828ea2080499553b97dfe33b3f4d472b4562ad7
 refs/tags/release-0.5: 7e3bcfbf21278251ee936ad53e92e9b719702d73
-refs/heads/auto: bf6964ecb67f4ffce6be75130ab7a3be793960ff
+refs/heads/auto: bfba120133e10df7c1333b98a166d24490270032
 refs/heads/servo: af82457af293e2a842ba6b7759b70288da276167
 refs/tags/release-0.6: b4ebcfa1812664df5e142f0134a5faea3918544c
 refs/tags/0.1: b19db808c2793fe2976759b85a355c3ad8c8b336

branches/auto/src/libstd/logging.rs

@@ -107,20 +107,22 @@ pub fn log(_level: u32, args: &fmt::Arguments) {
         let optional_task: Option<*mut Task> = Local::try_unsafe_borrow();
         match optional_task {
             Some(local) => {
+                // Lazily initialize the local task's logger
                 match (*local).logger {
                     // Use the available logger if we have one
-                    Some(ref mut logger) => return logger.log(args),
+                    Some(ref mut logger) => { logger.log(args); }
                     None => {
                         let mut logger = StdErrLogger::new();
                         logger.log(args);
                         (*local).logger = Some(logger);
                     }
                 }
             }
-            None => {}
+            // If there's no local task, then always log to stderr
+            None => {
+                let mut logger = StdErrLogger::new();
+                logger.log(args);
+            }
         }
-        // There is no logger anywhere, just write to stderr
-        let mut logger = StdErrLogger::new();
-        logger.log(args);
     }
 }

branches/auto/src/test/run-pass/logging-only-prints-once.rs

@@ -0,0 +1,36 @@
+// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// xfail-fast
+// exec-env:RUST_LOG=debug
+
+#[feature(managed_boxes)];
+
+use std::fmt;
+
+struct Foo(@mut int);
+
+impl fmt::Default for Foo {
+    fn fmt(f: &Foo, _fmt: &mut fmt::Formatter) {
+        assert!(***f == 0);
+        ***f = 1;
+    }
+}
+
+pub fn main() {
+    let (p,c) = stream();
+    do spawn {
+        let f = Foo(@mut 0);
+        debug!("{}", f);
+        assert!(**f == 1);
+        c.send(());
+    }
+    p.recv();
+}