diff --git a/compiler-rt/test/lit.common.cfg.py b/compiler-rt/test/lit.common.cfg.py
index c4ef8e3c42a85a..e71e6d40ec882b 100644
--- a/compiler-rt/test/lit.common.cfg.py
+++ b/compiler-rt/test/lit.common.cfg.py
@@ -511,7 +511,7 @@ def get_macos_aligned_version(macos_vers):
   if not config.android and len(ver_lines) and ver_lines[0].startswith(b"ldd "):
     from distutils.version import LooseVersion
     ver = LooseVersion(ver_lines[0].split()[-1].decode())
-    for required in ["2.27", "2.30"]:
+    for required in ["2.27", "2.30", "2.34"]:
       if ver >= LooseVersion(required):
         config.available_features.add("glibc-" + required)
 
diff --git a/compiler-rt/test/msan/preinit_array.cpp b/compiler-rt/test/msan/preinit_array.cpp
index 6f877bac0b1c30..c72004ecfb21b0 100644
--- a/compiler-rt/test/msan/preinit_array.cpp
+++ b/compiler-rt/test/msan/preinit_array.cpp
@@ -1,5 +1,8 @@
 // RUN: %clangxx_msan -O0 %s -o %t && %run %t
 
+// FIXME: Something changed in glibc 2.34, maybe earier.
+// UNSUPPORTED: glibc-2.34
+
 #include <sanitizer/msan_interface.h>
 
 volatile int global;