[hwasan] Re-enable print-memory-usage-android test.
The problem was not in a non-rooted device, but in tagged local
variable address passed to a system call, see comments in the code.
// RUN: %clang_hwasan %s -o %t && %env_hwasan_opts=export_memory_stats=1 %run %t 2>&1 | FileCheck %s
// REQUIRES: android
-// This test requires a rooted device.
-// UNSUPPORTED: android
-
#include <sys/types.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
+// The function needs to be unsanitized in order for &cmd to be untagged. This
+// address is passed to system() and then to execve() syscall. The tests need to
+// run on unpatched linux kernel, which at this time does not accept tagged
+// pointers in system call arguments (but there is hope: see
+// https://lore.kernel.org/patchwork/cover/979328).
+__attribute__((no_sanitize("hwaddress")))
int main() {
char cmd[1024];
snprintf(cmd, sizeof(cmd), "cat /proc/%d/maps", getpid());
