diff --git a/test/libcxx/atomics/atomics.align/align.pass.sh.cpp b/test/libcxx/atomics/atomics.align/align.pass.sh.cpp
index 505fe469a..e0ae37e9c 100644
--- a/test/libcxx/atomics/atomics.align/align.pass.sh.cpp
+++ b/test/libcxx/atomics/atomics.align/align.pass.sh.cpp
@@ -11,6 +11,10 @@
 // REQUIRES: libatomic
 // RUN: %build -latomic
 // RUN: %run
+//
+// GCC currently fails because it needs -fabi-version=6 to fix mangling of
+// std::atomic when used with __attribute__((vector(X))).
+// XFAIL: gcc
 
 // <atomic>