Improve symbols test

Remove seed argument and check for disallowed undefined symbols

ConflictSet.cpp

@@ -820,7 +820,7 @@ void ConflictSet::setOldestVersion(int64_t oldestVersion) {
   return impl->setOldestVersion(oldestVersion);
 }
 
-ConflictSet::ConflictSet(int64_t oldestVersion, [[maybe_unused]] uint64_t seed)
+ConflictSet::ConflictSet(int64_t oldestVersion)
     : impl(new (safe_malloc(sizeof(Impl))) Impl{oldestVersion}) {}
 
 ConflictSet::~ConflictSet() {
@@ -859,7 +859,7 @@ ConflictSet_setOldestVersion(void *cs, int64_t oldestVersion) {
   ((ConflictSet::Impl *)cs)->setOldestVersion(oldestVersion);
 }
 __attribute__((__visibility__("default"))) void *
-ConflictSet_create(int64_t oldestVersion, uint64_t) {
+ConflictSet_create(int64_t oldestVersion) {
   return new (safe_malloc(sizeof(ConflictSet::Impl)))
       ConflictSet::Impl{oldestVersion};
 }
@@ -870,6 +870,8 @@ __attribute__((__visibility__("default"))) void ConflictSet_destroy(void *cs) {
 }
 }
 
+namespace {
+
 void printLogical(std::string &result, Node *node) {
   Arena arena;
   for (Node *iter = node; iter != nullptr;) {
@@ -982,6 +984,8 @@ bool checkCorrectness(Node *node, ReferenceImpl &refImpl) {
   return success;
 }
 
+} // namespace
+
 namespace std {
 void __throw_length_error(const char *) { __builtin_unreachable(); }
 } // namespace std