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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).
12 lines
273 B
Rust
12 lines
273 B
Rust
// Verifies that "CFI Canonical Jump Tables" module flag is added.
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//
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// needs-sanitizer-cfi
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// compile-flags: -Clto -Ctarget-feature=-crt-static -Zsanitizer=cfi
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#![crate_type="lib"]
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pub fn foo() {
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}
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// CHECK: !{{[0-9]+}} = !{i32 4, !"CFI Canonical Jump Tables", i32 1}
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