PR c++/68309

gcc/
	* hash-table.h: Add copy constructor.
	* hash-map.h: Add copy constructor.
gcc/cp/
	* pt.c (instantiate_decl): Copy local_specializations for nested
	function.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231632 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 33 insertions, 0 deletions

diff --git a/gcc/hash-table.h b/gcc/hash-table.h
index 85598301e9b..53e72e66f33 100644
--- a/gcc/hash-table.h
+++ b/gcc/hash-table.h
@@ -365,6 +365,10 @@ public:
 		       bool gather_mem_stats = GATHER_STATISTICS,
 		       mem_alloc_origin origin = HASH_TABLE_ORIGIN
 		       CXX_MEM_STAT_INFO);
+  hash_table (const hash_table &, bool ggc = false,
+	      bool gather_mem_stats = GATHER_STATISTICS,
+	      mem_alloc_origin origin = HASH_TABLE_ORIGIN
+	      CXX_MEM_STAT_INFO);
   ~hash_table ();
 
   /* Create a hash_table in gc memory.  */
@@ -582,6 +586,35 @@ hash_table<Descriptor, Allocator>::hash_table (size_t size, bool ggc, bool
 }
 
 template<typename Descriptor, template<typename Type> class Allocator>
+hash_table<Descriptor, Allocator>::hash_table (const hash_table &h, bool ggc,
+					       bool gather_mem_stats,
+					       mem_alloc_origin origin
+					       MEM_STAT_DECL) :
+  m_n_elements (h.m_n_elements), m_n_deleted (h.m_n_deleted),
+  m_searches (0), m_collisions (0), m_ggc (ggc),
+  m_gather_mem_stats (gather_mem_stats)
+{
+  size_t size = h.m_size;
+
+  if (m_gather_mem_stats)
+    hash_table_usage.register_descriptor (this, origin, ggc
+					  FINAL_PASS_MEM_STAT);
+
+  value_type *nentries = alloc_entries (size PASS_MEM_STAT);
+  for (size_t i = 0; i < size; ++i)
+    {
+      value_type &entry = h.m_entries[i];
+      if (is_deleted (entry))
+	mark_deleted (nentries[i]);
+      else if (!is_empty (entry))
+	nentries[i] = entry;
+    }
+  m_entries = nentries;
+  m_size = size;
+  m_size_prime_index = h.m_size_prime_index;
+}
+
+template<typename Descriptor, template<typename Type> class Allocator>
 hash_table<Descriptor, Allocator>::~hash_table ()
 {
   for (size_t i = m_size - 1; i < m_size; i--)