BUG#5318 - failure: 'IGNORE_SPACE' affects numeric values after DEFAULT.

Added a check to recover from IGNORE_SPACE in this situation: 
<ident-character(s)><space><dot><ident-character(s)>
The ignored space led to the false identification of the dot
as an ident separator (like "db.table").


mysql-test/r/sql_mode.result:
  BUG#5318 - failure: 'IGNORE_SPACE' affects numeric values after DEFAULT.
  Added the test results.
mysql-test/t/sql_mode.test:
  BUG#5318 - failure: 'IGNORE_SPACE' affects numeric values after DEFAULT.
  Added new tests for the bug.
sql/sql_lex.cc:
  BUG#5318 - failure: 'IGNORE_SPACE' affects numeric values after DEFAULT.
  Added code to recover from skipped spaces in mode IGNORE_SPACES,
  when testing for an ident separator (which happens to be a dot).

mysql-test/r/sql_mode.result

@@ -85,3 +85,26 @@ t1	CREATE TABLE "t1" (
   UNIQUE KEY "email" ("email")
 )
 drop table t1;
+set session sql_mode = '';
+create table t1 ( min_num   dec(6,6)     default .000001);
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `min_num` decimal(7,6) default '0.000001'
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1 ;
+set session sql_mode = 'IGNORE_SPACE';
+create table t1 ( min_num   dec(6,6)     default 0.000001);
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `min_num` decimal(7,6) default '0.000001'
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1 ;
+create table t1 ( min_num   dec(6,6)     default .000001);
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `min_num` decimal(7,6) default '0.000001'
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1 ;

mysql-test/t/sql_mode.test

@@ -28,3 +28,24 @@ set sql_mode="postgresql,oracle,mssql,db2,maxdb";
 select @@sql_mode;
 show create table t1;
 drop table t1;
+
+#
+# BUG#5318 - failure: 'IGNORE_SPACE' affects numeric values after DEFAULT
+#
+# Force the usage of the default
+set session sql_mode = '';
+# statement for comparison, value starts with '.'
+create table t1 ( min_num   dec(6,6)     default .000001);
+show create table t1;
+drop table t1 ;
+#
+set session sql_mode = 'IGNORE_SPACE';
+# statement for comparison, value starts with '0'
+create table t1 ( min_num   dec(6,6)     default 0.000001);
+show create table t1;
+drop table t1 ;
+# This statement fails, value starts with '.'
+create table t1 ( min_num   dec(6,6)     default .000001);
+show create table t1;
+drop table t1 ;
+

sql/sql_lex.cc

@@ -454,6 +454,7 @@ inline static uint int_token(const char *str,uint length)
 int yylex(void *arg, void *yythd)
 {
   reg1	uchar c;
+  bool  space_ignored;
   int	tokval, result_state;
   uint length;
   enum my_lex_states state;
@@ -572,11 +573,12 @@ int yylex(void *arg, void *yythd)
         result_state= result_state & 0x80 ? IDENT_QUOTED : IDENT;
       }
       length= (uint) (lex->ptr - lex->tok_start)-1;
+      space_ignored= FALSE;
       if (lex->ignore_space)
       {
-	for (; state_map[c] == MY_LEX_SKIP ; c= yyGet());
+        for (; state_map[c] == MY_LEX_SKIP ; space_ignored= TRUE, c= yyGet());
       }
-      if (c == '.' && ident_map[yyPeek()])
+      if (! space_ignored && c == '.' && ident_map[yyPeek()])
 	lex->next_state=MY_LEX_IDENT_SEP;
       else
       {					// '(' must follow directly if function