diff --git a/libcxxabi/src/cxa_personality.cpp b/libcxxabi/src/cxa_personality.cpp
--- a/libcxxabi/src/cxa_personality.cpp
+++ b/libcxxabi/src/cxa_personality.cpp
@@ -247,6 +247,11 @@
 uintptr_t
 readEncodedPointer(const uint8_t** data, uint8_t encoding, uintptr_t base = 0)
 {
+    // Parameter 'base' will be used by a follow-on patch. Before that patch
+    // is landed the following statement is to avoid the -Wunused-parameter
+    // warning for now.
+    (void)base;
+
     uintptr_t result = 0;
     if (encoding == DW_EH_PE_omit)
         return result;