rust/tests/ui/sanitizer/use-after-scope.rs

//@ needs-sanitizer-support
//@ needs-sanitizer-address
//@ ignore-cross-compile
//
//@ compile-flags: -Zsanitizer=address
//@ run-fail
//@ error-pattern: ERROR: AddressSanitizer: stack-use-after-scope

static mut P: *mut usize = std::ptr::null_mut();

fn main() {
    unsafe {
        {
            let mut x = 0;
            P = &mut x;
        }
        std::ptr::write_volatile(P, 123);
    }
}
Detect use-after-scope bugs with AddressSanitizer Enable use-after-scope checks by default when using AddressSanitizer. They allow to detect incorrect use of stack objects after their scope have already ended. The detection is based on LLVM lifetime intrinsics. To facilitate the use of this functionality, the lifetime intrinsics are now emitted regardless of optimization level if enabled sanitizer makes use of them. 2020-01-27 00:00:00 +00:00			`//@ needs-sanitizer-support`
compiletest: Add directives to detect sanitizer support Add needs-sanitizer-{address,leak,memory,thread} directive indicating that test requires target with support for specific sanitizer. This is an addition to the existing needs-sanitizer-support directive indicating that test requires a sanitizer runtime library. 2020-06-05 00:00:00 +00:00			`//@ needs-sanitizer-address`
don't try to cross-compile sanitizer tests this was a pre-existing latent bug, we just didn't have any CI builders exercising it. fixes the following errors: ``` ---- [ui] tests/ui/sanitize/new-llvm-pass-manager-thin-lto.rs#opt1 stdout ---- error in revision `opt1`: test compilation failed although it shouldn't! status: exit status: 1 command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/sanitize/new-llvm-pass-manager-thin-lto.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "--sysroot" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2" "--target=i686-unknown-linux-gnu" "--cfg" "opt1" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Cstrip=debuginfo" "--remap-path-prefix=/checkout/tests/ui=fake-test-src-base" "-o" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/sanitize/new-llvm-pass-manager-thin-lto.opt1/a" "-A" "unused" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/i686-unknown-linux-gnu/native/rust-test-helpers" "-Clinker=x86_64-linux-gnu-gcc" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/sanitize/new-llvm-pass-manager-thin-lto.opt1/auxiliary" "-Zsanitizer=address" "-Clto=thin" "-Copt-level=1" --- stderr ------------------------------- error: linking with `x86_64-linux-gnu-gcc` failed: exit status: 1 = note: x86_64-linux-gnu-gcc: error: /checkout/obj/build/x86_64-unknown-linux-gnu/stage2/lib/rustlib/i686-unknown-linux-gnu/lib/librustc-nightly_rt.asan.a: No such file or directory failures: [ui] tests/ui/sanitize/badfree.rs [ui] tests/ui/sanitize/address.rs [ui] tests/ui/sanitize/use-after-scope.rs [ui] tests/ui/sanitize/new-llvm-pass-manager-thin-lto.rs#opt0 [ui] tests/ui/sanitize/new-llvm-pass-manager-thin-lto.rs#opt1 ``` 2023-06-05 04:22:17 +00:00			`//@ ignore-cross-compile`
Detect use-after-scope bugs with AddressSanitizer Enable use-after-scope checks by default when using AddressSanitizer. They allow to detect incorrect use of stack objects after their scope have already ended. The detection is based on LLVM lifetime intrinsics. To facilitate the use of this functionality, the lifetime intrinsics are now emitted regardless of optimization level if enabled sanitizer makes use of them. 2020-01-27 00:00:00 +00:00			`//`
			`//@ compile-flags: -Zsanitizer=address`
			`//@ run-fail`
			`//@ error-pattern: ERROR: AddressSanitizer: stack-use-after-scope`

			`static mut P: *mut usize = std::ptr::null_mut();`

			`fn main() {`
			`unsafe {`
			`{`
			`let mut x = 0;`
			`P = &mut x;`
			`}`
			`std::ptr::write_volatile(P, 123);`
			`}`
			`}`