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).

1 files changed, 2 insertions, 2 deletions

diff --git a/compiler/rustc_codegen_llvm/src/asm.rs b/compiler/rustc_codegen_llvm/src/asm.rs
index 1a3865360a3..ef826f87a1b 100644
--- a/compiler/rustc_codegen_llvm/src/asm.rs
+++ b/compiler/rustc_codegen_llvm/src/asm.rs
@@ -442,9 +442,9 @@ pub(crate) fn inline_asm_call<'ll>(
             );
 
             let call = if let Some((dest, catch, funclet)) = dest_catch_funclet {
-                bx.invoke(fty, None, v, inputs, dest, catch, funclet)
+                bx.invoke(fty, None, None, v, inputs, dest, catch, funclet)
             } else {
-                bx.call(fty, None, v, inputs, None)
+                bx.call(fty, None, None, v, inputs, None)
             };
 
             // Store mark in a metadata node so we can map LLVM errors