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Diffstat (limited to 'src/test/ui/sanitize/memory.rs')
-rw-r--r-- | src/test/ui/sanitize/memory.rs | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/src/test/ui/sanitize/memory.rs b/src/test/ui/sanitize/memory.rs new file mode 100644 index 000000000..b53f19a5b --- /dev/null +++ b/src/test/ui/sanitize/memory.rs @@ -0,0 +1,43 @@ +// needs-sanitizer-support +// needs-sanitizer-memory +// +// compile-flags: -Z sanitizer=memory -Zsanitizer-memory-track-origins -O +// +// run-fail +// error-pattern: MemorySanitizer: use-of-uninitialized-value +// error-pattern: Uninitialized value was created by an allocation +// error-pattern: in the stack frame of function 'main' +// +// This test case intentionally limits the usage of the std, +// since it will be linked with an uninstrumented version of it. + +#![feature(core_intrinsics)] +#![feature(start)] +#![feature(bench_black_box)] + +use std::hint::black_box; +use std::mem::MaybeUninit; + +#[inline(never)] +#[no_mangle] +fn random() -> [isize; 32] { + let r = unsafe { MaybeUninit::uninit().assume_init() }; + // Avoid optimizing everything out. + black_box(r) +} + +#[inline(never)] +#[no_mangle] +fn xor(a: &[isize]) -> isize { + let mut s = 0; + for i in 0..a.len() { + s = s ^ a[i]; + } + s +} + +#[start] +fn main(_: isize, _: *const *const u8) -> isize { + let r = random(); + xor(&r) +} |