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| author | Ramon de C Valle <rcvalle@users.noreply.github.com> | 2022-12-12 22:42:44 -0800 |
|---|---|---|
| committer | Ramon de C Valle <rcvalle@users.noreply.github.com> | 2023-05-03 22:41:29 +0000 |
| commit | 004aa15b4718c34ca367f77c6d57c63d670c4f56 (patch) | |
| tree | 25ddeb31ce110f68011a154518ecdbfdd814f80a /library/core/src/ffi/mod.rs | |
| parent | fec9adcdbc21469ef105162cc8cabf81c72d06be (diff) | |
| download | rust-004aa15b4718c34ca367f77c6d57c63d670c4f56.tar.gz rust-004aa15b4718c34ca367f77c6d57c63d670c4f56.zip | |
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).
Diffstat (limited to 'library/core/src/ffi/mod.rs')
| -rw-r--r-- | library/core/src/ffi/mod.rs | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/library/core/src/ffi/mod.rs b/library/core/src/ffi/mod.rs index c4f554c8c6b..99fa47cc00e 100644 --- a/library/core/src/ffi/mod.rs +++ b/library/core/src/ffi/mod.rs @@ -199,6 +199,7 @@ mod c_long_definition { // would be uninhabited and at least dereferencing such pointers would // be UB. #[doc = include_str!("c_void.md")] +#[cfg_attr(not(bootstrap), lang = "c_void")] #[repr(u8)] #[stable(feature = "core_c_void", since = "1.30.0")] pub enum c_void { |