static mut transform: forward `#[cfg]`

1 files changed, 25 insertions, 0 deletions

diff --git a/cortex-m-rt/examples/cfg-static.rs b/cortex-m-rt/examples/cfg-static.rs
new file mode 100644
index 0000000..2ffee13
--- /dev/null
+++ b/cortex-m-rt/examples/cfg-static.rs
@@ -0,0 +1,25 @@
+//! using `#[cfg]` on `static` shouldn't cause compile errors
+
+#![deny(unsafe_code)]
+#![deny(warnings)]
+#![no_main]
+#![no_std]
+
+extern crate cortex_m_rt as rt;
+extern crate panic_halt;
+
+use rt::{entry, exception};
+
+#[entry]
+fn main() -> ! {
+    #[cfg(never)]
+    static mut COUNT: u32 = 0;
+
+    loop {}
+}
+
+#[exception]
+fn SysTick() {
+    #[cfg(never)]
+    static mut FOO: u32 = 0;
+}