some small changes to help get 5.1 compiling cleanly on Windows and with Visual C++ 2005

sql/ha_innodb.cc

@@ -3030,8 +3030,8 @@ ha_innobase::store_key_val_for_row(
 
 			if (key_part->length > 0 && cs->mbmaxlen > 1) {
 				len = (ulint) cs->cset->well_formed_len(cs, 
-					src_start,
-					src_start + key_part->length,
+					(const char*)src_start,
+					(const char*)(src_start + key_part->length),
 					key_part->length / cs->mbmaxlen, 
 					&error);
 			} else {

sql/ha_partition.cc

@@ -883,7 +883,7 @@ int ha_partition::open(const char *name, int mode, uint test_if_locked)
   alloc_len+= table->s->max_key_length;
   if (!m_ordered_rec_buffer)
   {
-    if (!(m_ordered_rec_buffer= my_malloc(alloc_len, MYF(MY_WME))))
+    if (!(m_ordered_rec_buffer= (byte*)my_malloc(alloc_len, MYF(MY_WME))))
     {
       DBUG_RETURN(1);
     }
@@ -895,14 +895,14 @@ int ha_partition::open(const char *name, int mode, uint test_if_locked)
         We also set-up a reference to the first record for temporary use in
         setting up the scan.
       */
-      char *ptr= m_ordered_rec_buffer;
+      char *ptr= (char*)m_ordered_rec_buffer;
       uint i= 0;
       do
       {
         int2store(ptr, i);
         ptr+= m_rec_length + PARTITION_BYTES_IN_POS;
       } while (++i < m_tot_parts);
-      m_start_key.key= ptr;
+      m_start_key.key= (const byte*)ptr;
     }
   }
   file= m_file;

sql/key.cc

@@ -461,7 +461,7 @@ int key_rec_cmp(void *key, byte *first_rec, byte *second_rec)
   uint key_parts= key_info->key_parts, i= 0;
   KEY_PART_INFO *key_part= key_info->key_part;
   char *rec0= key_part->field->ptr - key_part->offset;
-  my_ptrdiff_t first_diff= first_rec - rec0, sec_diff= second_rec - rec0;
+  my_ptrdiff_t first_diff= first_rec - (byte*)rec0, sec_diff= second_rec - (byte*)rec0;
   int result= 0;
   DBUG_ENTER("key_rec_cmp");
 

sql/set_var.cc

@@ -84,6 +84,7 @@ extern my_bool innobase_log_archive,
                innobase_file_per_table,
                innobase_locks_unsafe_for_binlog;
 
+extern "C" {
 extern ulong srv_max_buf_pool_modified_pct;
 extern ulong srv_max_purge_lag;
 extern ulong srv_auto_extend_increment;
@@ -92,6 +93,7 @@ extern ulong srv_n_free_tickets_to_enter;
 extern ulong srv_thread_sleep_delay;
 extern ulong srv_thread_concurrency;
 extern ulong srv_commit_concurrency;
+}
 
 /* WITH_NDBCLUSTER_STORAGE_ENGINE */
 extern ulong ndb_cache_check_time;

sql/sql_partition.cc

@@ -2937,7 +2937,7 @@ void get_partition_set(const TABLE *table, byte *buf, const uint index,
           sub_part= get_sub_part_id_from_key(table, buf, key_info, key_spec);
         else if (part_info->all_fields_in_PPF.is_set(index))
         {
-          if (get_part_id_from_key(table,buf,key_info,key_spec,&part_part))
+          if (get_part_id_from_key(table,buf,key_info,key_spec,(uint32*)&part_part))
           {
             /*
               The value of the RANGE or LIST partitioning was outside of
@@ -2976,7 +2976,7 @@ void get_partition_set(const TABLE *table, byte *buf, const uint index,
           sub_part= get_sub_part_id_from_key(table, buf, key_info, key_spec);
         else if (check_part_func_bound(part_info->subpart_field_array))
         {
-          if (get_part_id_from_key(table,buf,key_info,key_spec,&part_part))
+          if (get_part_id_from_key(table,buf,key_info,key_spec,(uint32*)&part_part))
           {
             part_spec->start_part= no_parts;
             clear_indicator_in_key_fields(key_info);

sql/sql_udf.cc

@@ -168,10 +168,7 @@ void udf_init()
       This is done to ensure that only approved dll from the system
       directories are used (to make this even remotely secure).
     */
-    if (my_strchr(files_charset_info, dl_name,
-                  dl_name + strlen(dl_name), '/') ||
-        IF_WIN(my_strchr(files_charset_info, dl_name,
-                         dl_name + strlen(dl_name), '\\'),0) ||
+    if (my_strchr(files_charset_info, dl_name, dl_name + strlen(dl_name), FN_LIBCHAR) || 
 		strlen(name.str) > NAME_LEN)
     {
       sql_print_error("Invalid row in mysql.func table for function '%.64s'",
@@ -391,9 +388,7 @@ int mysql_create_function(THD *thd,udf_func *udf)
     This is done to ensure that only approved dll from the system
     directories are used (to make this even remotely secure).
   */
-  if (my_strchr(files_charset_info, udf->dl, udf->dl + strlen(udf->dl), '/') ||
-      IF_WIN(strchr(files_charset_info, udf->dl,
-                    udf->dl + strlen(udf->dl), '\\'),0))
+  if (my_strchr(files_charset_info, udf->dl, udf->dl + strlen(udf->dl), FN_LIBCHAR))
   {
     my_message(ER_UDF_NO_PATHS, ER(ER_UDF_NO_PATHS), MYF(0));
     DBUG_RETURN(1);

sql/unireg.h

@@ -36,6 +36,9 @@
 #ifndef SHAREDIR
 #define SHAREDIR	"share/"
 #endif
+#ifndef LIBDIR
+#define LIBDIR		"lib/"
+#endif
 
 #define ER(X) errmesg[(X) - ER_ERROR_FIRST]
 #define ER_SAFE(X) (((X) >= ER_ERROR_FIRST && (X) <= ER_ERROR_LAST) ? ER(X) : "Invalid error code")