mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-30 02:33:55 +00:00
004aa15b47
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).
28 lines
829 B
Rust
28 lines
829 B
Rust
// Verifies that KCFI operand bundles are emitted.
|
|
//
|
|
// 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:
|
|
// compile-flags: -Cno-prepopulate-passes -Zsanitizer=kcfi -Copt-level=0
|
|
|
|
#![crate_type="lib"]
|
|
#![feature(no_core, lang_items)]
|
|
#![no_core]
|
|
|
|
#[lang="sized"]
|
|
trait Sized { }
|
|
#[lang="copy"]
|
|
trait Copy { }
|
|
|
|
impl Copy for i32 {}
|
|
|
|
pub fn foo(f: fn(i32) -> i32, arg: i32) -> i32 {
|
|
// CHECK-LABEL: define{{.*}}foo{{.*}}!{{<unknown kind #36>|kcfi_type}} !{{[0-9]+}}
|
|
// CHECK: start:
|
|
// CHECK-NEXT: {{%.+}} = call {{(noundef )*}}i32 %f(i32 {{(noundef )*}}%arg){{.*}}[ "kcfi"(i32 {{[-0-9]+}}) ]
|
|
// CHECK-NEXT: ret i32 {{%.+}}
|
|
f(arg)
|
|
}
|