| //@ add-core-stubs |
| //@ revisions: aarch64 x86_64 |
| //@ [aarch64] compile-flags: --target aarch64-unknown-none |
| //@ [aarch64] needs-llvm-components: aarch64 |
| //@ [x86_64] compile-flags: --target x86_64-unknown-none |
| //@ [x86_64] needs-llvm-components: x86 |
| //@ compile-flags: -Ctarget-feature=-crt-static -Zsanitizer=kcfi -Cno-prepopulate-passes -Copt-level=0 |
| |
| #![feature(no_core, lang_items)] |
| #![crate_type = "lib"] |
| #![no_core] |
| |
| extern crate minicore; |
| use minicore::*; |
| |
| struct Thing; |
| trait MyTrait { |
| #[unsafe(naked)] |
| extern "C" fn my_naked_function() { |
| // the real function is defined |
| // CHECK: .globl |
| // CHECK-SAME: my_naked_function |
| naked_asm!("ret") |
| } |
| } |
| impl MyTrait for Thing {} |
| |
| // the shim calls the real function |
| // CHECK-LABEL: define |
| // CHECK-SAME: my_naked_function |
| // CHECK-SAME: reify.shim.fnptr |
| |
| // CHECK-LABEL: main |
| #[unsafe(no_mangle)] |
| pub fn main() { |
| // Trick the compiler into generating an indirect call. |
| const F: extern "C" fn() = Thing::my_naked_function; |
| |
| // main calls the shim function |
| // CHECK: call void |
| // CHECK-SAME: my_naked_function |
| // CHECK-SAME: reify.shim.fnptr |
| (F)(); |
| } |
| |
| // CHECK: declare !kcfi_type |
| // CHECK-SAME: my_naked_function |
