diff --git a/libcxx/test/libcxx/assertions/modes/enabling_assertions_enables_extensive_mode.pass.cpp b/libcxx/test/libcxx/assertions/modes/enabling_assertions_enables_extensive_mode.pass.cpp
index a91ba04176374..23ef20d4e0781 100644
--- a/libcxx/test/libcxx/assertions/modes/enabling_assertions_enables_extensive_mode.pass.cpp
+++ b/libcxx/test/libcxx/assertions/modes/enabling_assertions_enables_extensive_mode.pass.cpp
@@ -15,6 +15,8 @@
 // The ability to set a custom abort message is required to compare the assertion message (which only happens in the
 // debug mode).
 // XFAIL: libcpp-hardening-mode=debug && availability-verbose_abort-missing
+// HWASAN replaces TRAP with abort or error exit code.
+// XFAIL: libcpp-hardening-mode=fast && hwasan
 // Note that GCC doesn't support `-Wno-macro-redefined`.
 // ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HARDENING_MODE -D_LIBCPP_ENABLE_ASSERTIONS=1
 
diff --git a/libcxx/test/libcxx/assertions/modes/override_with_extensive_mode.pass.cpp b/libcxx/test/libcxx/assertions/modes/override_with_extensive_mode.pass.cpp
index f78d5d70e5890..c3cdfa926c6cc 100644
--- a/libcxx/test/libcxx/assertions/modes/override_with_extensive_mode.pass.cpp
+++ b/libcxx/test/libcxx/assertions/modes/override_with_extensive_mode.pass.cpp
@@ -13,6 +13,8 @@
 // The ability to set a custom abort message is required to compare the assertion message (which only happens in the
 // debug mode).
 // XFAIL: libcpp-hardening-mode=debug && availability-verbose_abort-missing
+// HWASAN replaces TRAP with abort or error exit code.
+// XFAIL: libcpp-hardening-mode=fast && hwasan
 // ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HARDENING_MODE -D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_EXTENSIVE
 
 #include <cassert>
diff --git a/libcxx/test/libcxx/assertions/modes/override_with_fast_mode.pass.cpp b/libcxx/test/libcxx/assertions/modes/override_with_fast_mode.pass.cpp
index 27542ee32bef9..854bf6c5da9cd 100644
--- a/libcxx/test/libcxx/assertions/modes/override_with_fast_mode.pass.cpp
+++ b/libcxx/test/libcxx/assertions/modes/override_with_fast_mode.pass.cpp
@@ -13,6 +13,8 @@
 // The ability to set a custom abort message is required to compare the assertion message (which only happens in the
 // debug mode).
 // XFAIL: libcpp-hardening-mode=debug && availability-verbose_abort-missing
+// HWASAN replaces TRAP with abort or error exit code.
+// XFAIL: libcpp-hardening-mode=fast && hwasan
 // ADDITIONAL_COMPILE_FLAGS: -U_LIBCPP_HARDENING_MODE -D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_FAST
 
 #include <cassert>