Auto merge of #144109 - matthiaskrgr:rollup-mz0mrww, r=matthiaskrgr

Rollup of 11 pull requests

Successful merges:

 - rust-lang/rust#142300 (Disable `tests/run-make/mte-ffi` because no CI runners have MTE extensions enabled)
 - rust-lang/rust#143271 (Store the type of each GVN value)
 - rust-lang/rust#143293 (fix `-Zsanitizer=kcfi` on `#[naked]` functions)
 - rust-lang/rust#143719 (Emit warning when there is no space between `-o` and arg)
 - rust-lang/rust#143846 (pass --gc-sections if -Zexport-executable-symbols is enabled and improve tests)
 - rust-lang/rust#143891 (Port `#[coverage]` to the new attribute system)
 - rust-lang/rust#143967 (constify `Option` methods)
 - rust-lang/rust#144008 (Fix false positive double negations with macro invocation)
 - rust-lang/rust#144010 (Boostrap: add warning on `optimize = false`)
 - rust-lang/rust#144049 (rustc-dev-guide subtree update)
 - rust-lang/rust#144056 (Copy GCC sources into the build directory even outside CI)

r? `@ghost`
`@rustbot` modify labels: rollup

1 files changed, 47 insertions, 0 deletions

diff --git a/tests/codegen/sanitizer/kcfi/naked-function.rs b/tests/codegen/sanitizer/kcfi/naked-function.rs
new file mode 100644
index 00000000000..2c8cdc919b8
--- /dev/null
+++ b/tests/codegen/sanitizer/kcfi/naked-function.rs
@@ -0,0 +1,47 @@
+//@ 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