diff --git a/compiler-rt/lib/sanitizer_common/tests/sanitizer_ring_buffer_test.cpp b/compiler-rt/lib/sanitizer_common/tests/sanitizer_ring_buffer_test.cpp
--- a/compiler-rt/lib/sanitizer_common/tests/sanitizer_ring_buffer_test.cpp
+++ b/compiler-rt/lib/sanitizer_common/tests/sanitizer_ring_buffer_test.cpp
@@ -74,6 +74,8 @@
   TestRB<LargeStruct>();
 }
 
+// Solaris/sparcv9 uses the full 64-bit address space.
+#if !(SANITIZER_SOLARIS && defined(__sparcv9))
 template<typename T>
 CompactRingBuffer<T> *AllocCompactRingBuffer(size_t count) {
   size_t sz = sizeof(T) * count;
@@ -94,5 +96,6 @@
       EXPECT_EQ(top - i - 1, (*R)[i]);
   }
 }
+#endif  // !(SANITIZER_SOLARIS && __sparcv9)
 #endif
 }  // namespace __sanitizer