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95bdb34494
This removes the #[no_sanitize] attribute, which was behind an unstable feature named no_sanitize. Instead, we introduce the sanitize attribute which is more powerful and allows to be extended in the future (instead of just focusing on turning sanitizers off). This also makes sanitize(kernel_address = ..) attribute work with -Zsanitize=address To do it the same as how clang disables address sanitizer, we now disable ASAN on sanitize(kernel_address = "off") and KASAN on sanitize(address = "off"). The same was added to clang in https://reviews.llvm.org/D44981.
139 lines
3.8 KiB
Rust
139 lines
3.8 KiB
Rust
// Verifies that the `#[sanitize(address = "off")]` attribute can be used to
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// selectively disable sanitizer instrumentation.
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//
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//@ needs-sanitizer-address
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//@ compile-flags: -Zsanitizer=address -Ctarget-feature=-crt-static -Copt-level=0
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#![crate_type = "lib"]
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#![feature(sanitize)]
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// CHECK: @UNSANITIZED = constant{{.*}} no_sanitize_address
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// CHECK-NOT: @__asan_global_SANITIZED
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#[no_mangle]
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#[sanitize(address = "off")]
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pub static UNSANITIZED: u32 = 0;
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// CHECK: @__asan_global_SANITIZED
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#[no_mangle]
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pub static SANITIZED: u32 = 0;
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// CHECK-LABEL: ; sanitize_off::unsanitized
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// CHECK-NEXT: ; Function Attrs:
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// CHECK-NOT: sanitize_address
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// CHECK: start:
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// CHECK-NOT: call void @__asan_report_load
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// CHECK: }
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#[sanitize(address = "off")]
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pub fn unsanitized(b: &mut u8) -> u8 {
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*b
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}
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// CHECK-LABEL: ; sanitize_off::sanitized
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// CHECK-NEXT: ; Function Attrs:
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// CHECK: sanitize_address
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// CHECK: start:
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// CHECK: call void @__asan_report_load
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// CHECK: }
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pub fn sanitized(b: &mut u8) -> u8 {
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*b
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}
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#[sanitize(address = "off")]
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pub mod foo {
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// CHECK-LABEL: ; sanitize_off::foo::unsanitized
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// CHECK-NEXT: ; Function Attrs:
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// CHECK-NOT: sanitize_address
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// CHECK: start:
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// CHECK-NOT: call void @__asan_report_load
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// CHECK: }
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pub fn unsanitized(b: &mut u8) -> u8 {
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*b
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}
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// CHECK-LABEL: ; sanitize_off::foo::sanitized
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// CHECK-NEXT: ; Function Attrs:
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// CHECK: sanitize_address
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// CHECK: start:
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// CHECK: call void @__asan_report_load
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// CHECK: }
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#[sanitize(address = "on")]
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pub fn sanitized(b: &mut u8) -> u8 {
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*b
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}
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}
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pub trait MyTrait {
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fn unsanitized(&self, b: &mut u8) -> u8;
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fn sanitized(&self, b: &mut u8) -> u8;
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// CHECK-LABEL: ; sanitize_off::MyTrait::unsanitized_default
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// CHECK-NEXT: ; Function Attrs:
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// CHECK-NOT: sanitize_address
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// CHECK: start:
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// CHECK-NOT: call void @__asan_report_load
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// CHECK: }
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#[sanitize(address = "off")]
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fn unsanitized_default(&self, b: &mut u8) -> u8 {
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*b
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}
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// CHECK-LABEL: ; sanitize_off::MyTrait::sanitized_default
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// CHECK-NEXT: ; Function Attrs:
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// CHECK: sanitize_address
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// CHECK: start:
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// CHECK: call void @__asan_report_load
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// CHECK: }
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fn sanitized_default(&self, b: &mut u8) -> u8 {
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*b
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}
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}
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#[sanitize(address = "off")]
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impl MyTrait for () {
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// CHECK-LABEL: ; <() as sanitize_off::MyTrait>::unsanitized
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// CHECK-NEXT: ; Function Attrs:
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// CHECK-NOT: sanitize_address
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// CHECK: start:
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// CHECK-NOT: call void @__asan_report_load
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// CHECK: }
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fn unsanitized(&self, b: &mut u8) -> u8 {
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*b
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}
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// CHECK-LABEL: ; <() as sanitize_off::MyTrait>::sanitized
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// CHECK-NEXT: ; Function Attrs:
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// CHECK: sanitize_address
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// CHECK: start:
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// CHECK: call void @__asan_report_load
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// CHECK: }
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#[sanitize(address = "on")]
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fn sanitized(&self, b: &mut u8) -> u8 {
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*b
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}
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}
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pub fn expose_trait(b: &mut u8) -> u8 {
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<() as MyTrait>::unsanitized_default(&(), b);
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<() as MyTrait>::sanitized_default(&(), b)
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}
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#[sanitize(address = "off")]
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pub mod outer {
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#[sanitize(thread = "off")]
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pub mod inner {
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// CHECK-LABEL: ; sanitize_off::outer::inner::unsanitized
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// CHECK-NEXT: ; Function Attrs:
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// CHECK-NOT: sanitize_address
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// CHECK: start:
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// CHECK-NOT: call void @__asan_report_load
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// CHECK: }
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pub fn unsanitized() {
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let xs = [0, 1, 2, 3];
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// Avoid optimizing everything out.
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let xs = std::hint::black_box(xs.as_ptr());
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let code = unsafe { *xs.offset(4) };
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std::process::exit(code);
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}
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}
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}
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