1 files changed, 94 insertions, 0 deletions
diff --git a/examples/cfg-whole-task.no_rs b/examples/cfg-whole-task.no_rs
new file mode 100644
index 00000000..f41866db
--- /dev/null
+++ b/examples/cfg-whole-task.no_rs
@@ -0,0 +1,94 @@
+//! examples/cfg-whole-task.rs
+
+#![deny(unsafe_code)]
+#![deny(warnings)]
+#![no_main]
+#![no_std]
+
+use panic_semihosting as _;
+
+#[rtic::app(device = lm3s6965,  dispatchers = [SSI0, QEI0])]
+mod app {
+    use cortex_m_semihosting::debug;
+    #[cfg(debug_assertions)]
+    use cortex_m_semihosting::hprintln;
+
+    #[shared]
+    struct Shared {
+        count: u32,
+        #[cfg(never)]
+        unused: u32,
+    }
+
+    #[local]
+    struct Local {}
+
+    #[init]
+    fn init(_: init::Context) -> (Shared, Local, init::Monotonics) {
+        foo::spawn().unwrap();
+        foo::spawn().unwrap();
+
+        (
+            Shared {
+                count: 0,
+                #[cfg(never)]
+                unused: 1,
+            },
+            Local {},
+            init::Monotonics(),
+        )
+    }
+
+    #[idle]
+    fn idle(_: idle::Context) -> ! {
+        debug::exit(debug::EXIT_SUCCESS); // Exit QEMU simulator
+
+        loop {
+            cortex_m::asm::nop();
+        }
+    }
+
+    #[task(capacity = 2, shared = [count])]
+    fn foo(mut _cx: foo::Context) {
+        #[cfg(debug_assertions)]
+        {
+            _cx.shared.count.lock(|count| *count += 1);
+
+            log::spawn(_cx.shared.count.lock(|count| *count)).unwrap();
+        }
+
+        // this wouldn't compile in `release` mode
+        // *_cx.shared.count += 1;
+
+        // ..
+    }
+
+    // The whole task should disappear,
+    // currently still present in the Tasks enum
+    #[cfg(never)]
+    #[task(capacity = 2, shared = [count])]
+    fn foo2(mut _cx: foo2::Context) {
+        #[cfg(debug_assertions)]
+        {
+            _cx.shared.count.lock(|count| *count += 10);
+
+            log::spawn(_cx.shared.count.lock(|count| *count)).unwrap();
+        }
+
+        // this wouldn't compile in `release` mode
+        // *_cx.shared.count += 1;
+
+        // ..
+    }
+
+    #[cfg(debug_assertions)]
+    #[task(capacity = 2)]
+    fn log(_: log::Context, n: u32) {
+        hprintln!(
+            "foo has been called {} time{}",
+            n,
+            if n == 1 { "" } else { "s" }
+        )
+        .ok();
+    }
+}