rust/tests/codegen/sanitizer/cfi-add-enable-split-lto-unit-flag.rs

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

#![crate_type="lib"]

pub fn foo() {
}

// CHECK: !{{[0-9]+}} = !{i32 4, !"EnableSplitLTOUnit", i32 1}
Add cross-language LLVM CFI support to the Rust compiler This commit adds cross-language LLVM Control Flow Integrity (CFI) support to the Rust compiler by adding the `-Zsanitizer-cfi-normalize-integers` option to be used with Clang `-fsanitize-cfi-icall-normalize-integers` for normalizing integer types (see https://reviews.llvm.org/D139395). It provides 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). For more information about LLVM CFI and cross-language LLVM CFI support for the Rust compiler, see design document in the tracking issue #89653. Cross-language LLVM CFI can be enabled with -Zsanitizer=cfi and -Zsanitizer-cfi-normalize-integers, and requires proper (i.e., non-rustc) LTO (i.e., -Clinker-plugin-lto). 2022-12-13 00:42:44 -06:00			`// Verifies that "EnableSplitLTOUnit" module flag is added.`
			`//`
			`//@ needs-sanitizer-cfi`
			`//@ compile-flags: -Clto -Ctarget-feature=-crt-static -Zsanitizer=cfi`

			`#![crate_type="lib"]`

			`pub fn foo() {`
			`}`

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