rust/tests/codegen/sanitizer/cfi/add-cfi-normalize-integers-flag.rs

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

#![crate_type = "lib"]

pub fn foo() {}

// CHECK: !{{[0-9]+}} = !{i32 4, !"cfi-normalize-integers", i32 1}
Add missing module flags for CFI and KCFI sanitizers Set the cfi-normalize-integers and kcfi-offset module flags when Control-Flow Integrity sanitizers are used, so functions generated by the LLVM backend use the same CFI/KCFI options as rustc. cfi-normalize-integers tells LLVM to also use integer normalization for generated functions when -Zsanitizer-cfi-normalize-integers is used. kcfi-offset specifies the number of prefix nops between the KCFI type hash and the function entry when -Z patchable-function-entry is used. Note that LLVM assumes all indirectly callable functions use the same number of prefix NOPs with -Zsanitizer=kcfi. 2024-08-16 20:33:58 +00:00			`// Verifies that "cfi-normalize-integers" module flag is added.`
			`//`
			`//@ needs-sanitizer-cfi`
			`//@ compile-flags: -Clto -Ctarget-feature=-crt-static -Zsanitizer=cfi -Zsanitizer-cfi-normalize-integers`

			`#![crate_type = "lib"]`

			`pub fn foo() {}`

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