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204b2281fa
AddressSanitizer adds instrumentation to global variables unless the [`no_sanitize_address`](https://llvm.org/docs/LangRef.html#global-attributes) attribute is set on them. This commit extends the existing `#[no_sanitize(address)]` attribute to set this; previously it only had the desired effect on functions.
40 lines
1.0 KiB
Rust
40 lines
1.0 KiB
Rust
// Verifies that no_sanitize 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(no_sanitize)]
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// CHECK: @UNSANITIZED = constant{{.*}} no_sanitize_address
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// CHECK-NOT: @__asan_global_UNSANITIZED
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#[no_mangle]
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#[no_sanitize(address)]
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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: ; no_sanitize::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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#[no_sanitize(address)]
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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: ; no_sanitize::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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