// It also validates that functions can be called through function pointers
// through traits.
-#![feature(no_core, lang_items, unboxed_closures, arbitrary_self_types)]
+#![feature(no_core, lang_items, intrinsics, unboxed_closures, arbitrary_self_types)]
#![crate_type = "lib"]
#![no_core]
extern "rust-call" fn call(&self, args: Args) -> Self::Output;
}
+extern "rust-intrinsic" {
+ pub fn transmute<Src, Dst>(src: Src) -> Dst;
+}
+
pub static mut STORAGE_FOO: fn(&usize, &mut u32) -> Result<(), ()> = arbitrary_black_box;
pub static mut STORAGE_BAR: u32 = 12;
STORAGE_FOO(&1, &mut buf);
}
}
+
+// Validate that we can codegen transmutes between data ptrs and fn ptrs.
+
+// CHECK: define{{.+}}{{void \(\) addrspace\(1\)\*|ptr addrspace\(1\)}} @transmute_data_ptr_to_fn({{\{\}\*|ptr}}{{.*}} %x)
+#[no_mangle]
+pub unsafe fn transmute_data_ptr_to_fn(x: *const ()) -> fn() {
+ // It doesn't matter precisely how this is codegenned (through memory or an addrspacecast),
+ // as long as it doesn't cause a verifier error by using `bitcast`.
+ transmute(x)
+}
+
+// CHECK: define{{.+}}{{\{\}\*|ptr}} @transmute_fn_ptr_to_data({{void \(\) addrspace\(1\)\*|ptr addrspace\(1\)}}{{.*}} %x)
+#[no_mangle]
+pub unsafe fn transmute_fn_ptr_to_data(x: fn()) -> *const () {
+ // It doesn't matter precisely how this is codegenned (through memory or an addrspacecast),
+ // as long as it doesn't cause a verifier error by using `bitcast`.
+ transmute(x)
+}