about summary refs log tree commit diff
path: root/example/alloc_example.rs
diff options
context:
space:
mode:
authorbjorn3 <bjorn3@users.noreply.github.com>2018-11-05 18:42:43 +0100
committerbjorn3 <bjorn3@users.noreply.github.com>2018-11-05 18:42:43 +0100
commitd20f54bb1a873a16681c687a58b7946dc6924913 (patch)
tree9b38a1335085ca67caac07717419a7adb78c4691 /example/alloc_example.rs
parent4e4cad8a205276bdaf577a81b6af5102fbc2ee15 (diff)
downloadrust-d20f54bb1a873a16681c687a58b7946dc6924913.tar.gz
rust-d20f54bb1a873a16681c687a58b7946dc6924913.zip
Add some benchmarks
Diffstat (limited to 'example/alloc_example.rs')
-rw-r--r--example/alloc_example.rs41
1 files changed, 41 insertions, 0 deletions
diff --git a/example/alloc_example.rs b/example/alloc_example.rs
new file mode 100644
index 00000000000..06746ab1f76
--- /dev/null
+++ b/example/alloc_example.rs
@@ -0,0 +1,41 @@
+#![feature(start, box_syntax, alloc_system, core_intrinsics, alloc, alloc_error_handler)]
+#![no_std]
+
+extern crate alloc;
+extern crate alloc_system;
+
+use alloc::prelude::*;
+
+use alloc_system::System;
+
+#[global_allocator]
+static ALLOC: System = System;
+
+#[link(name = "c")]
+extern "C" {
+    fn puts(s: *const u8);
+}
+
+#[panic_handler]
+fn panic_handler(_: &core::panic::PanicInfo) -> ! {
+    unsafe {
+        core::intrinsics::abort();
+    }
+}
+
+#[alloc_error_handler]
+fn alloc_error_handler(_: alloc::alloc::Layout) -> ! {
+    unsafe {
+        core::intrinsics::abort();
+    }
+}
+
+#[start]
+fn main(_argc: isize, _argv: *const *const u8) -> isize {
+    let world: Box<&str> = box "Hello World!\0";
+    unsafe {
+        puts(*world as *const str as *const u8);
+    }
+
+    0
+}