diff --git a/src/support/lockedpool.cpp b/src/support/lockedpool.cpp
--- a/src/support/lockedpool.cpp
+++ b/src/support/lockedpool.cpp
@@ -118,7 +118,7 @@
 }
 
 #ifdef ARENA_DEBUG
-void printchunk(char *base, size_t sz, bool used) {
+static void printchunk(char *base, size_t sz, bool used) {
     std::cout << "0x" << std::hex << std::setw(16) << std::setfill('0') << base
               << " 0x" << std::hex << std::setw(16) << std::setfill('0') << sz
               << " 0x" << used << std::endl;