Give an error if you use a BLOB(X) where X > 255

Fixes for MIT pthreads

configure.in

@@ -1862,8 +1862,8 @@ AC_SUBST(server_scripts)
 
 if test "$with_posix_threads" = "no" -o "$with_mit_threads" = "yes"
 then
-  # MIT pthreads does not support connecting with unix sockets
-  AC_DEFINE(HAVE_THREADS_WITHOUT_SOCKETS)
+  # MIT pthreads does now support connecting with unix sockets
+  # AC_DEFINE(HAVE_THREADS_WITHOUT_SOCKETS)
 fi
 
 # Some usefull subst

myisam/mi_check.c

@@ -192,7 +192,7 @@ int chk_del(MI_CHECK *param, register MI_INFO *info, uint test_flag)
   }
   DBUG_RETURN(0);
 wrong:
-  param->retry_without_quick=1;		// Don't use quick repair
+  param->retry_without_quick=1;		/* Don't use quick repair */
   if (test_flag & T_VERBOSE) puts("");
   mi_check_print_error(param,"record delete-link-chain corrupted");
   DBUG_RETURN(1);
@@ -292,7 +292,7 @@ int chk_size(MI_CHECK *param, register MI_INFO *info)
       error=1;
       mi_check_print_error(param,"Size of datafile is: %-8s         Should be: %s",
 		    llstr(size,buff), llstr(skr,buff2));
-      param->retry_without_quick=1;		// Don't use quick repair
+      param->retry_without_quick=1;		/* Don't use quick repair */
     }
     else
     {

myisam/sort.c

@@ -291,9 +291,9 @@ static int NEAR_F merge_many_buff(MI_SORT_PARAM *info, uint keys,
     temp=from_file; from_file=to_file; to_file=temp;
     *maxbuffer= (int) (lastbuff-buffpek)-1;
   }
-  close_cached_file(to_file);			// This holds old result
+  close_cached_file(to_file);			/* This holds old result */
   if (to_file == t_file)
-    *t_file=t_file2;				// Copy result file
+    *t_file=t_file2;				/* Copy result file */
 
   DBUG_RETURN(*maxbuffer >= MERGEBUFF2);	/* Return 1 if interrupted */
 } /* merge_many_buff */

sql/handler.h

@@ -273,6 +273,7 @@ public:
   virtual uint max_keys() const =0;
   virtual uint max_key_parts() const =0;
   virtual uint max_key_length()const =0;
+  virtual uint max_key_part_length() { return 255; }
   virtual uint min_record_length(uint options) const { return 1; }
   virtual bool low_byte_first() const { return 1; }
   virtual bool is_crashed() const  { return 0; }

sql/mysqld.cc

@@ -809,7 +809,7 @@ static void server_init(void)
   }
 #endif
 
-#if defined(HAVE_SYS_UN_H) && !defined(HAVE_mit_thread)
+#if defined(HAVE_SYS_UN_H)
   /*
   ** Create the UNIX socket
   */
@@ -2694,7 +2694,7 @@ The default values (after parsing the command line arguments) are:\n\n");
   if (opt_slow_logname)
     printf("update log:  %s\n",opt_slow_logname);
   printf("TCP port:    %d\n",mysql_port);
-#if defined(HAVE_SYS_UN_H) && !defined(HAVE_mit_thread)
+#if defined(HAVE_SYS_UN_H)
   printf("Unix socket: %s\n",mysql_unix_port);
 #endif
   if (my_disable_locking)

sql/sql_table.cc

@@ -416,7 +416,8 @@ int mysql_create_table(THD *thd,const char *db, const char *table_name,
       {
 	if (f_is_blob(sql_field->pack_flag))
 	{
-	  if ((length=column->length) > file->max_key_length())
+	  if ((length=column->length) > file->max_key_length() ||
+	      length > file->max_key_part_length())
 	  {
 	    my_error(ER_WRONG_SUB_KEY,MYF(0));
 	    DBUG_RETURN(-1);

sql/table.cc

@@ -491,6 +491,8 @@ int openfrm(const char *name, const char *alias, uint db_stat, uint prgflag,
     else
       outparam->primary_key = MAX_KEY; // we do not have a primary key
   }
+  else
+    outparam->primary_key= MAX_KEY;
   x_free((gptr) disk_buff);
   disk_buff=0;
   if (new_field_pack_flag <= 1)