Fixed compiler warnings from gcc 4.0.2:

- Added empty constructors and virtual destructors to many classes and structs
- Removed some usage of the offsetof() macro to instead use C++ class pointers


configure.in:
  Added comment
ndb/include/ndbapi/NdbDictionary.hpp:
  Fixed compiler warnings from gcc 4.0.2
sql/field.cc:
  Fixed compiler warnings from gcc 4.0.2
sql/handler.h:
  Fixed compiler warnings from gcc 4.0.2
sql/item.h:
  Fixed compiler warnings from gcc 4.0.2
sql/item_cmpfunc.h:
  Fixed compiler warnings from gcc 4.0.2
sql/log_event.h:
  Fixed compiler warnings from gcc 4.0.2
sql/mysql_priv.h:
  Fixed compiler warnings from gcc 4.0.2
  For find_table_in_list I fixed it to use proper C++ class pointers instead of C style pointers
sql/opt_range.cc:
  Fixed compiler warnings from gcc 4.0.2
sql/parse_file.h:
  Fixed compiler warnings from gcc 4.0.2
sql/sp_rcontext.h:
  Fixed compiler warnings from gcc 4.0.2
sql/spatial.h:
  Fixed compiler warnings from gcc 4.0.2
sql/sql_base.cc:
  Fixed compiler warnings from gcc 4.0.2
sql/sql_cache.h:
  Fixed compiler warnings from gcc 4.0.2
sql/sql_class.h:
  Fixed compiler warnings from gcc 4.0.2
sql/sql_parse.cc:
  Fixed compiler warnings from gcc 4.0.2
  (Not pretty, but seams to work...)
sql/sql_select.h:
  Fixed compiler warnings from gcc 4.0.2
sql/sql_update.cc:
  Fixed compiler warnings from gcc 4.0.2
sql/table.h:
  Fixed compiler warnings from gcc 4.0.2
sql/tztime.cc:
  Fixed compiler warnings from gcc 4.0.2
sql/tztime.h:
  Fixed compiler warnings from gcc 4.0.2

1 files changed, 6 insertions, 0 deletions

diff --git a/sql/sql_cache.h b/sql/sql_cache.h
index 69a0d6cd05d..29d314d3c44 100644
--- a/sql/sql_cache.h
+++ b/sql/sql_cache.h
@@ -69,6 +69,7 @@ class Query_cache;
 
 struct Query_cache_block_table
 {
+  Query_cache_block_table() {}                /* Remove gcc warning */
   TABLE_COUNTER_TYPE n;		// numbr in table (from 0)
   Query_cache_block_table *next, *prev;
   Query_cache_table *parent;
@@ -78,6 +79,7 @@ struct Query_cache_block_table
 
 struct Query_cache_block
 {
+  Query_cache_block() {}                      /* Remove gcc warning */
   enum block_type {FREE, QUERY, RESULT, RES_CONT, RES_BEG,
 		   RES_INCOMPLETE, TABLE, INCOMPLETE};
 
@@ -143,6 +145,7 @@ struct Query_cache_query
 
 struct Query_cache_table
 {
+  Query_cache_table() {}                      /* Remove gcc warning */
   char *tbl;
   uint32 key_len;
   uint8 table_type;
@@ -171,6 +174,7 @@ struct Query_cache_table
 
 struct Query_cache_result
 {
+  Query_cache_result() {}                     /* Remove gcc warning */
   Query_cache_block *query;
 
   inline gptr data()
@@ -197,6 +201,7 @@ extern "C" void query_cache_invalidate_by_MyISAM_filename(const char* filename);
 
 struct Query_cache_memory_bin
 {
+  Query_cache_memory_bin() {}                 /* Remove gcc warning */
 #ifndef DBUG_OFF
   ulong size;
 #endif
@@ -215,6 +220,7 @@ struct Query_cache_memory_bin
 
 struct Query_cache_memory_bin_step
 {
+  Query_cache_memory_bin_step() {}            /* Remove gcc warning */
   ulong size;
   ulong increment;
   uint idx;