Merge mattiasj-laptop.(none):/home/mattiasj/clones/mysql-5.1-bug30695

into  mattiasj-laptop.(none):/home/mattiasj/clones/mysql-5.1-bug30878

mysql-test/r/partition.result

 drop table if exists t1;
+CREATE TABLE t1 (
+d DATE NOT NULL
+)
+PARTITION BY RANGE( YEAR(d) ) (
+PARTITION p0 VALUES LESS THAN (1960),
+PARTITION p1 VALUES LESS THAN (1970),
+PARTITION p2 VALUES LESS THAN (1980),
+PARTITION p3 VALUES LESS THAN (1990)
+);
+ALTER TABLE t1 ADD PARTITION (
+PARTITION `p5` VALUES LESS THAN (2010)
+COMMENT 'APSTART \' APEND'
+);
+SELECT * FROM t1 LIMIT 1;
+d
+DROP TABLE t1;
 create table t1 (id int auto_increment, s1 int, primary key (id));
 insert into t1 values (null,1);
 insert into t1 values (null,6);

mysql-test/t/partition.test

@@ -9,6 +9,32 @@
 drop table if exists t1;
 --enable_warnings
 
+#
+# Bug #30695: An apostrophe ' in the comment of the ADD PARTITION causes the Server to crash.
+#
+# To verify the fix for crashing (on unix-type OS)
+# uncomment the exec and error rows!
+
+CREATE TABLE t1 (
+    d DATE NOT NULL
+)
+PARTITION BY RANGE( YEAR(d) ) (
+    PARTITION p0 VALUES LESS THAN (1960),
+    PARTITION p1 VALUES LESS THAN (1970),
+    PARTITION p2 VALUES LESS THAN (1980),
+    PARTITION p3 VALUES LESS THAN (1990)
+);
+
+ALTER TABLE t1 ADD PARTITION (
+PARTITION `p5` VALUES LESS THAN (2010)
+COMMENT 'APSTART \' APEND'
+);
+#--exec sed 's/APSTART \\/APSTART  /' var/master-data/test/t1.frm > tmpt1.frm && mv tmpt1.frm var/master-data/test/t1.frm
+#--error 1064
+SELECT * FROM t1 LIMIT 1;
+
+DROP TABLE t1;
+
 #
 # Bug 30878: crashing when alter an auto_increment non partitioned
 #            table to partitioned

sql/sql_partition.cc

@@ -1849,6 +1849,20 @@ static int add_uint(File fptr, ulonglong number)
   return add_string(fptr, buff);
 }
 
+/*
+   Must escape strings in partitioned tables frm-files,
+   parsing it later with mysql_unpack_partition will fail otherwise.
+*/
+static int add_quoted_string(File fptr, const char *quotestr)
+{
+  String orgstr(quotestr, system_charset_info);
+  String escapedstr;
+  int err= add_string(fptr, "'");
+  err+= append_escaped(&escapedstr, &orgstr);
+  err+= add_string(fptr, escapedstr.c_ptr());
+  return err + add_string(fptr, "'");
+}
+
 static int add_keyword_string(File fptr, const char *keyword,
                               bool should_use_quotes, 
                               const char *keystr)
@@ -1859,10 +1873,9 @@ static int add_keyword_string(File fptr, const char *keyword,
   err+= add_equal(fptr);
   err+= add_space(fptr);
   if (should_use_quotes)
-    err+= add_string(fptr, "'");
+    err+= add_quoted_string(fptr, keystr);
+  else
     err+= add_string(fptr, keystr);
-  if (should_use_quotes)
-    err+= add_string(fptr, "'");
   return err + add_space(fptr);
 }
 

sql/table.cc

@@ -1782,6 +1782,7 @@ int open_table_from_share(THD *thd, TABLE_SHARE *share, const char *alias,
                                 outparam, is_create_table,
                                 share->default_part_db_type,
                                 &work_part_info_used);
+    if (!tmp)
       outparam->part_info->is_auto_partitioned= share->auto_partitioned;
     DBUG_PRINT("info", ("autopartitioned: %u", share->auto_partitioned));
     /* we should perform the fix_partition_func in either local or