rust/tests/codegen/sanitizer/kcfi-add-kcfi-flag.rs

// Verifies that "kcfi" module flag is added.
//
// needs-sanitizer-kcfi
// compile-flags: -Ctarget-feature=-crt-static -Zsanitizer=kcfi

#![crate_type="lib"]

pub fn foo() {
}

// CHECK: !{{[0-9]+}} = !{i32 4, !"kcfi", i32 1}
Add LLVM KCFI support to the Rust compiler This commit adds LLVM Kernel Control Flow Integrity (KCFI) support to the Rust compiler. It initially provides forward-edge control flow protection for operating systems kernels for Rust-compiled code only by aggregating function pointers in groups identified by their return and parameter types. (See llvm/llvm-project@cff5bef.) Forward-edge control flow protection for C or C++ and Rust -compiled code "mixed binaries" (i.e., for when C or C++ and Rust -compiled code share the same virtual address space) will be provided in later work as part of this project by identifying C char and integer type uses at the time types are encoded (see Type metadata in the design document in the tracking issue #89653). LLVM KCFI can be enabled with -Zsanitizer=kcfi. Co-authored-by: bjorn3 <17426603+bjorn3@users.noreply.github.com> 2022-11-21 23:29:00 -06:00			`// Verifies that "kcfi" module flag is added.`
			`//`
			`// needs-sanitizer-kcfi`
			`// compile-flags: -Ctarget-feature=-crt-static -Zsanitizer=kcfi`

			`#![crate_type="lib"]`

			`pub fn foo() {`
			`}`

			`// CHECK: !{{[0-9]+}} = !{i32 4, !"kcfi", i32 1}`