diff --git a/src/external-reference-table.cc b/src/external-reference-table.cc
index 3c32231eb4..276d0ea91e 100644
--- a/src/external-reference-table.cc
+++ b/src/external-reference-table.cc
@@ -15,6 +15,7 @@
 #if defined(DEBUG) && defined(V8_OS_LINUX) && !defined(V8_OS_ANDROID)
 #define SYMBOLIZE_FUNCTION
 #include <execinfo.h>
+#include <vector>
 #endif  // DEBUG && V8_OS_LINUX && !V8_OS_ANDROID
 
 namespace v8 {
@@ -49,6 +50,14 @@ ExternalReferenceTable::ExternalReferenceTable(Isolate* isolate) {
   AddApiReferences(isolate);
 }
 
+ExternalReferenceTable::~ExternalReferenceTable() {
+#ifdef SYMBOLIZE_FUNCTION
+  for (char** table : symbol_tables_) {
+    free(table);
+  }
+#endif
+}
+
 #ifdef DEBUG
 void ExternalReferenceTable::ResetCount() {
   for (ExternalReferenceEntry& entry : refs_) entry.count = 0;
@@ -62,10 +71,12 @@ void ExternalReferenceTable::PrintCount() {
 }
 #endif  // DEBUG
 
-// static
-const char* ExternalReferenceTable::ResolveSymbol(void* address) {
+const char* ExternalReferenceTable::ResolveSymbol(void* address,
+                                                  std::vector<char**>* tables) {
 #ifdef SYMBOLIZE_FUNCTION
-  return backtrace_symbols(&address, 1)[0];
+  char** table = backtrace_symbols(&address, 1);
+  if (tables) tables->push_back(table);
+  return table[0];
 #else
   return "<unresolved>";
 #endif  // SYMBOLIZE_FUNCTION
@@ -458,7 +469,11 @@ void ExternalReferenceTable::AddApiReferences(Isolate* isolate) {
   if (api_external_references != nullptr) {
     while (*api_external_references != 0) {
       Address address = reinterpret_cast<Address>(*api_external_references);
+#ifdef SYMBOLIZE_FUNCTION
+      Add(address, ResolveSymbol(address, &symbol_tables_));
+#else
       Add(address, ResolveSymbol(address));
+#endif
       api_external_references++;
     }
   }
diff --git a/src/external-reference-table.h b/src/external-reference-table.h
index 76d437c3cc..101d8332fb 100644
--- a/src/external-reference-table.h
+++ b/src/external-reference-table.h
@@ -5,6 +5,8 @@
 #ifndef V8_EXTERNAL_REFERENCE_TABLE_H_
 #define V8_EXTERNAL_REFERENCE_TABLE_H_
 
+#include <vector>
+
 #include "src/address-map.h"
 
 namespace v8 {
@@ -18,6 +20,7 @@ class Isolate;
 class ExternalReferenceTable {
  public:
   static ExternalReferenceTable* instance(Isolate* isolate);
+  ~ExternalReferenceTable();
 
   uint32_t size() const { return static_cast<uint32_t>(refs_.length()); }
   Address address(uint32_t i) { return refs_[i].address; }
@@ -32,7 +35,8 @@ class ExternalReferenceTable {
   void PrintCount();
 #endif  // DEBUG
 
-  static const char* ResolveSymbol(void* address);
+  static const char* ResolveSymbol(void* address,
+                                   std::vector<char**>* = nullptr);
 
  private:
   struct ExternalReferenceEntry {
@@ -63,6 +67,9 @@ class ExternalReferenceTable {
   void AddApiReferences(Isolate* isolate);
 
   List<ExternalReferenceEntry> refs_;
+#ifdef DEBUG
+  std::vector<char**> symbol_tables_;
+#endif
   uint32_t api_refs_start_;
 
   DISALLOW_COPY_AND_ASSIGN(ExternalReferenceTable);