Started Rust in Action MEAP.

2 files changed, 37 insertions, 0 deletions

diff --git a/meap/meap-code/ch3/globalerror/Cargo.toml b/meap/meap-code/ch3/globalerror/Cargo.toml
new file mode 100644
index 0000000..7300db2
--- /dev/null
+++ b/meap/meap-code/ch3/globalerror/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "globalerror"
+version = "0.1.0"
+authors = ["Tim McNamara <code@timmcnamara.co.nz>"]
+
+[dependencies]
+rand = "0.3"
diff --git a/meap/meap-code/ch3/globalerror/src/main.rs b/meap/meap-code/ch3/globalerror/src/main.rs
new file mode 100644
index 0000000..c3db4cb
--- /dev/null
+++ b/meap/meap-code/ch3/globalerror/src/main.rs
@@ -0,0 +1,30 @@
+extern crate rand;
+use ::rand::Rng;
+
+static mut ERROR: isize = 0;
+
+struct File;
+
+#[allow(unused_variables)]
+fn read(f: &File, save_to: Vec<u8>) -> usize {
+    if rand::thread_rng().gen_weighted_bool(10_000) {
+        unsafe {
+            ERROR = 1;
+        }
+    }
+
+    0 // <> Always read() 0 bytes  
+}
+
+#[allow(unused_mut)]
+fn main() {
+    let mut f = File;
+    let mut buffer = vec![];
+
+    read(&f, buffer);
+    unsafe {
+        if ERROR != 0 {
+            panic!("An error has occurred!")
+        }
+    }
+}
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