example to trigger Cosmopolitan's ASAN runtime

src/bin/unsafe-but-asan.rs

@@ -0,0 +1,27 @@
+#![no_main]
+#![no_std]
+#![feature(rustc_private)]
+
+extern crate libc;
+
+extern "C" {
+    fn ShowCrashReports();
+}
+
+#[no_mangle]
+pub extern "C" fn main(_argc: isize, _argv: *const *const u8) -> isize {
+    unsafe {
+        ShowCrashReports();
+        let mut buffer = libc::malloc(13);
+        const c_str: &'static str = "Hello\0";
+        libc::strcpy(buffer as *mut i8, c_str.as_ptr() as *const i8);
+        libc::free(buffer);
+        libc::printf(buffer as *const _);
+    }
+    0
+}
+
+#[panic_handler]
+fn my_panic(_info: &core::panic::PanicInfo) -> ! {
+    loop {}
+}