Optimizations

mysql-test/r/create.result:
  Changed ERROR -> NOTE (for enum/set)
sql/lock.cc:
  Removed not needed test (table_list->db is always set)
sql/sql_repl.cc:
  Removed not needed test
sql/sql_table.cc:
  ERROR -> NOTE
  Removed not needed test
strings/strtod.c:
  Portabilty fix. (DBL_MAX *10 is not safe)

mysql-test/r/create.result

@@ -459,16 +459,16 @@ drop table t1, t2;
 create table t1(cenum enum('a'), cset set('b'));
 create table t2(cenum enum('a','a'), cset set('b','b'));
 Warnings:
-Error	1291	Column 'cenum' has duplicated value 'a' in ENUM
-Error	1291	Column 'cset' has duplicated value 'b' in SET
+Note	1291	Column 'cenum' has duplicated value 'a' in ENUM
+Note	1291	Column 'cset' has duplicated value 'b' in SET
 create table t3(cenum enum('a','A','a','c','c'), cset set('b','B','b','d','d'));
 Warnings:
-Error	1291	Column 'cenum' has duplicated value 'a' in ENUM
-Error	1291	Column 'cenum' has duplicated value 'A' in ENUM
-Error	1291	Column 'cenum' has duplicated value 'c' in ENUM
-Error	1291	Column 'cset' has duplicated value 'b' in SET
-Error	1291	Column 'cset' has duplicated value 'B' in SET
-Error	1291	Column 'cset' has duplicated value 'd' in SET
+Note	1291	Column 'cenum' has duplicated value 'a' in ENUM
+Note	1291	Column 'cenum' has duplicated value 'A' in ENUM
+Note	1291	Column 'cenum' has duplicated value 'c' in ENUM
+Note	1291	Column 'cset' has duplicated value 'b' in SET
+Note	1291	Column 'cset' has duplicated value 'B' in SET
+Note	1291	Column 'cset' has duplicated value 'd' in SET
 drop table t1, t2, t3;
 create database test_$1;
 use test_$1;

sql/lock.cc

@@ -495,7 +495,7 @@ int lock_table_name(THD *thd, TABLE_LIST *table_list)
 {
   TABLE *table;
   char  key[MAX_DBKEY_LENGTH];
-  char *db= table_list->db ? table_list->db : (thd->db ? thd->db : (char*) "");
+  char *db= table_list->db;
   uint  key_length;
   DBUG_ENTER("lock_table_name");
   safe_mutex_assert_owner(&LOCK_open);

sql/sql_repl.cc

@@ -662,8 +662,6 @@ Increase max_allowed_packet on master";
 int start_slave(THD* thd , MASTER_INFO* mi,  bool net_report)
 {
   int slave_errno= 0;
-  if (!thd)
-    thd = current_thd;
   int thread_mask;
   DBUG_ENTER("start_slave");
   

sql/sql_table.cc

@@ -365,9 +365,6 @@ void check_duplicates_in_interval(const char *set_or_name,
   unsigned int old_count= typelib->count;
   const char **old_type_names= typelib->type_names;
 
-  if (typelib->count <= 1)
-    return;
-
   old_count= typelib->count;
   old_type_names= typelib->type_names;
   const char **cur_value= typelib->type_names;
@@ -377,7 +374,7 @@ void check_duplicates_in_interval(const char *set_or_name,
     typelib->count--;
     if (find_type((char*)*cur_value,typelib,1))
     {
-      push_warning_printf(current_thd,MYSQL_ERROR::WARN_LEVEL_ERROR,
+      push_warning_printf(current_thd,MYSQL_ERROR::WARN_LEVEL_NOTE,
 			  ER_DUPLICATED_VALUE_IN_TYPE,
 			  ER(ER_DUPLICATED_VALUE_IN_TYPE),
 			  name,*cur_value,set_or_name);

strings/strtod.c

@@ -36,6 +36,11 @@ static double scaler1[] = {
   1.0, 10.0, 1e2, 1e3, 1e4, 1e5, 1e6, 1e7, 1e8, 1e9
 };
 
+
+#ifndef HUGE_VAL				/* Should be +Infinitive */
+#define HUGE_VAL DBL_MAX
+#endif
+
 double my_strtod(const char *str, char **end)
 {
   double result= 0.0;
@@ -90,10 +95,7 @@ double my_strtod(const char *str, char **end)
       }
       if (exp >= 1000)
       {
-        if (neg)
-          result= 0.0;
-        else
-          result= DBL_MAX*10;
+	result= neg ? 0.0 : HUGE_VAL;
         goto done;
       }
       while (exp >= 100)