1 files changed, 16 insertions, 0 deletions
diff --git a/cortex-m-rt/tests/compile-fail/pre-init-bad-signature-1.rs b/cortex-m-rt/tests/compile-fail/pre-init-bad-signature-1.rs
new file mode 100644
index 0000000..0c3c476
--- /dev/null
+++ b/cortex-m-rt/tests/compile-fail/pre-init-bad-signature-1.rs
@@ -0,0 +1,16 @@
+#![no_main]
+#![no_std]
+
+extern crate cortex_m_rt;
+extern crate panic_halt;
+
+use cortex_m_rt::{entry, pre_init};
+
+#[pre_init]
+fn foo() {}
+//~^ ERROR `#[pre_init]` function must have signature `unsafe fn()`
+
+#[entry]
+fn bar() -> ! {
+    loop {}
+}