40f1d9d154
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.
22 lines
618 B
Rust
22 lines
618 B
Rust
// Verifies that "kcfi-offset" module flag is added.
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//
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//@ revisions: aarch64 x86_64
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//@ [aarch64] compile-flags: --target aarch64-unknown-none
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//@ [aarch64] needs-llvm-components: aarch64
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//@ [x86_64] compile-flags: --target x86_64-unknown-none
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//@ [x86_64] needs-llvm-components: x86
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//@ compile-flags: -Ctarget-feature=-crt-static -Zsanitizer=kcfi -Z patchable-function-entry=4,3
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#![feature(no_core, lang_items, patchable_function_entry)]
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#![crate_type = "lib"]
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#![no_core]
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#[lang = "sized"]
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trait Sized {}
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#[lang = "copy"]
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trait Copy {}
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pub fn foo() {}
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// CHECK: !{{[0-9]+}} = !{i32 4, !"kcfi-offset", i32 3}
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