branches/5.1: This is an interim fix, fix tests and make read float/double arg const.

include/mach0data.h

@@ -267,7 +267,7 @@ double
 mach_double_read(
 /*=============*/
 				/* out: double read */
-	byte*	b);	 /* in: pointer to memory from where to read */
+	const byte*	b);	 /* in: pointer to memory from where to read */
 /*************************************************************
 Writes a double. It is stored in a little-endian format. */
 UNIV_INLINE
@@ -283,7 +283,7 @@ float
 mach_float_read(
 /*============*/
 				/* out: float read */
-	byte*	b);	 /* in: pointer to memory from where to read */
+	const byte*	b);	 /* in: pointer to memory from where to read */
 /*************************************************************
 Writes a float. It is stored in a little-endian format. */
 UNIV_INLINE

include/mach0data.ic

@@ -505,7 +505,7 @@ double
 mach_double_read(
 /*=============*/
 				/* out: double read */
-	byte*	b)	/* in: pointer to memory from where to read */
+	const byte*	b)	/* in: pointer to memory from where to read */
 {
 	double	d;
 	ulint	i;
@@ -554,7 +554,7 @@ float
 mach_float_read(
 /*============*/
 				/* out: float read */
-	byte*	b)	/* in: pointer to memory from where to read */
+	const byte*	b)	/* in: pointer to memory from where to read */
 {
 	float	d;
 	ulint	i;

mysql-test/innodb-autoinc.result

@@ -1131,9 +1131,7 @@ Warnings:
 Note	1051	Unknown table 'T1'
 CREATE TABLE T1(C1 DOUBLE AUTO_INCREMENT KEY, C2 CHAR(10)) ENGINE=InnoDB;
 INSERT INTO T1(C1, C2) VALUES (1, 'innodb'), (3, 'innodb');
-INSERT INTO T1(C1) VALUES ('innodb');
-Warnings:
-Warning	1265	Data truncated for column 'C1' at row 1
+INSERT INTO T1(C2) VALUES ('innodb');
 SHOW CREATE TABLE T1;
 Table	Create Table
 T1	CREATE TABLE `T1` (
@@ -1144,9 +1142,7 @@ T1	CREATE TABLE `T1` (
 DROP TABLE T1;
 CREATE TABLE T1(C1 FLOAT AUTO_INCREMENT KEY, C2 CHAR(10)) ENGINE=InnoDB;
 INSERT INTO T1(C1, C2) VALUES (1, 'innodb'), (3, 'innodb');
-INSERT INTO T1(C1) VALUES ('innodb');
-Warnings:
-Warning	1265	Data truncated for column 'C1' at row 1
+INSERT INTO T1(C2) VALUES ('innodb');
 SHOW CREATE TABLE T1;
 Table	Create Table
 T1	CREATE TABLE `T1` (
@@ -1154,3 +1150,4 @@ T1	CREATE TABLE `T1` (
   `C2` char(10) DEFAULT NULL,
   PRIMARY KEY (`C1`)
 ) ENGINE=InnoDB AUTO_INCREMENT=5 DEFAULT CHARSET=latin1
+DROP TABLE T1;

mysql-test/innodb-autoinc.test

@@ -629,14 +629,13 @@ CREATE TABLE T1(C1 DOUBLE AUTO_INCREMENT KEY, C2 CHAR(10)) ENGINE=InnoDB;
 INSERT INTO T1(C1, C2) VALUES (1, 'innodb'), (3, 'innodb');
 # Restart the server
 -- source include/restart_mysqld.inc
-INSERT INTO T1(C1) VALUES ('innodb');
+INSERT INTO T1(C2) VALUES ('innodb');
 SHOW CREATE TABLE T1;
 DROP TABLE T1;
 CREATE TABLE T1(C1 FLOAT AUTO_INCREMENT KEY, C2 CHAR(10)) ENGINE=InnoDB;
 INSERT INTO T1(C1, C2) VALUES (1, 'innodb'), (3, 'innodb');
 # Restart the server
 -- source include/restart_mysqld.inc
-INSERT INTO T1(C1) VALUES ('innodb');
+INSERT INTO T1(C2) VALUES ('innodb');
 SHOW CREATE TABLE T1;
-
-
+DROP TABLE T1;

row/row0sel.c

@@ -4536,18 +4536,20 @@ row_search_autoinc_read_column(
 	data = rec_get_nth_field((rec_t*)rec, offsets, col_no, &len);
 
 	ut_a(len != UNIV_SQL_NULL);
-	ut_a(len <= sizeof value);
 
 	switch (mtype) {
 	case DATA_INT:
+		ut_a(len <= sizeof value);
 		value = mach_read_int_type(data, len, unsigned_type);
 		break;
  
 	case DATA_FLOAT:
+		ut_a(len == sizeof(float));
 		value = mach_float_read(data);
 		break;
  
 	case DATA_DOUBLE:
+		ut_a(len == sizeof(double));
 		value = mach_double_read(data);
 		break;