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-rw-r--r--meap/meap-code/ch3/globalerror/Cargo.toml7
-rw-r--r--meap/meap-code/ch3/globalerror/src/main.rs30
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!")
+ }
+ }
+} \ No newline at end of file