[sanitizer] Mark allow_user_segv as XFAIL instead of UNSUPPORTED
// clang-format on
// Remove when fixed: https://github.com/google/sanitizers/issues/637
-// UNSUPPORTED: lsan
-// UNSUPPORTED: msan
-// UNSUPPORTED: tsan
-// UNSUPPORTED: ubsan
+// XFAIL: lsan
+// XFAIL: msan
+// XFAIL: tsan
+// XFAIL: ubsan
#include <signal.h>
#include <stdio.h>
