Rollup merge of #68291 - tmiasko:sanitizer-tests, r=nikomatsakis

Update sanitizer tests

* Move tests from src/test/run-make-fulldeps to src/test/ui.
* Fix memory sanitizer test to detect the intended issue rather than
  an unrelated one caused by the use of an uninstrumented std.

Author: tmandry

src/test/run-make-fulldeps/sanitizer-address/Makefile

@@ -0,0 +1,21 @@
+// needs-sanitizer-support
+// only-x86_64
+//
+// compile-flags: -Z sanitizer=address -O
+//
+// run-fail
+// error-pattern: AddressSanitizer: stack-buffer-overflow
+// error-pattern: 'xs' <== Memory access at offset
+
+#![feature(test)]
+
+use std::hint::black_box;
+use std::mem;
+
+fn main() {
+    let xs = [0, 1, 2, 3];
+    // Avoid optimizing everything out.
+    let xs = black_box(xs.as_ptr());
+    let code = unsafe { *xs.offset(4) };
+    std::process::exit(code);
+}

src/test/run-make-fulldeps/sanitizer-address/overflow.rs

@@ -1,3 +1,11 @@
+// needs-sanitizer-support
+// only-x86_64
+//
+// compile-flags: -Z sanitizer=leak -O
+//
+// run-fail
+// error-pattern: LeakSanitizer: detected memory leaks
+
 #![feature(test)]
 
 use std::hint::black_box;