use #[panic_handler] instead of #[panic_implementation]

the later has been deprecated.

Author: japaric

.travis.yml

@@ -4,7 +4,6 @@ matrix:
   include:
     - env: TARGET=x86_64-unknown-linux-gnu
       rust: nightly
-      if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
 
     - env: TARGET=thumbv7m-none-eabi
       rust: nightly
@@ -38,6 +37,9 @@ install:
 script:
   - bash ci/script.sh
 
+after_success:
+  - bash ci/after-success.sh
+
 after_script: set +e
 
 cache: cache

CHANGELOG.md

@@ -7,6 +7,15 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 
+## [v0.2.1] - 2018-09-03
+
+### Changed
+
+- This crate no longer depends on `arm-none-eabi-gcc`.
+
+- Move from the `panic_implementation` attribute to the `panic_handler`
+  attribute, which will be stabilized.
+
 ## [v0.2.0] - 2018-06-04
 
 ### Changed

Cargo.toml

@@ -2,11 +2,12 @@
 authors = ["Jorge Aparicio <jorge@japaric.io>"]
 categories = ["no-std"]
 description = "Log panic messages using the ITM (Instrumentation Trace Macrocell)"
+documentation = "https://rust-embedded.github.io/panic-itm/panic_itm"
 keywords = ["panic-impl", "panic", "ITM", "ARM", "Cortex-M"]
 license = "MIT OR Apache-2.0"
 name = "panic-itm"
-repository = "https://github.com/japaric/panic-itm"
-version = "0.2.0"
+repository = "https://github.com/rust-embedded/panic-itm"
+version = "0.2.1"
 
 [dependencies]
-cortex-m = "0.5.0"
+cortex-m = "0.5.6"

ci/after-success.sh

@@ -0,0 +1,20 @@
+set -euxo pipefail
+
+main() {
+    cargo doc
+
+    mkdir ghp-import
+
+    curl -Ls https://github.com/davisp/ghp-import/archive/master.tar.gz |
+        tar --strip-components 1 -C ghp-import -xz
+
+    ./ghp-import/ghp_import.py target/doc
+
+    set +x
+    git push -fq https://$GH_TOKEN@github.com/$TRAVIS_REPO_SLUG.git gh-pages && echo OK
+}
+
+# only publish on successful merges to master
+if [ $TRAVIS_BRANCH = master ] && [ $TRAVIS_PULL_REQUEST = false ] && [ $TARGET = x86_64-unknown-linux-gnu ]; then
+    main
+fi

src/lib.rs

@@ -30,18 +30,19 @@
 
 #![deny(missing_docs)]
 #![deny(warnings)]
-#![feature(panic_implementation)]
+#![feature(panic_handler)]
 #![no_std]
 
 #[macro_use]
 extern crate cortex_m;
 
 use core::panic::PanicInfo;
+use core::sync::atomic::{self, Ordering};
 
 use cortex_m::peripheral::ITM;
 use cortex_m::interrupt;
 
-#[panic_implementation]
+#[panic_handler]
 fn panic(info: &PanicInfo) -> ! {
     interrupt::disable();
 
@@ -50,5 +51,9 @@ fn panic(info: &PanicInfo) -> ! {
 
     iprintln!(stim, "{}", info);
 
-    loop {}
+    loop {
+        // add some side effect to prevent this from turning into a UDF instruction
+        // see rust-lang/rust#28728 for details
+        atomic::compiler_fence(Ordering::SeqCst)
+    }
 }