Symbol visibility tests

VersionedMap.cpp

@@ -460,7 +460,7 @@ private:
   int searchPathSize_;
 };
 
-struct VersionedMap::Impl {
+struct __attribute__((__visibility__("hidden"))) VersionedMap::Impl {
 
   // The last node is allowed to be 0, in which case this is the search path of
   // where an entry would exist
@@ -1174,13 +1174,13 @@ int64_t VersionedMap::getBytes() const { return impl->getBytes(); }
 
 // GCOVR_EXCL_START
 
-void VersionedMap::Impl::printInOrder(int64_t version) {
+inline void VersionedMap::Impl::printInOrder(int64_t version) {
   printInOrderHelper(version,
                      roots.getThreadSafeHandle().rootForVersion(version), 0);
 }
 
-void VersionedMap::Impl::printInOrderHelper(int64_t version, uint32_t node,
-                                            int depth) {
+inline void VersionedMap::Impl::printInOrderHelper(int64_t version,
+                                                   uint32_t node, int depth) {
   if (node == 0) {
     return;
   }