bk commit into 5.0 tree (kaa:1.2516) BUG#29446

[Alexey Kopytov]

Below is the list of changes that have just been committed into a local
5.0 repository of kaa. When kaa does a push these changes will
be propagated to the main repository and, within 24 hours after the
push, to the public repository.
For information on how to access the public repository
see http://dev.mysql.com/doc/mysql/en/installing-source-tree.html

ChangeSet@stripped, 2007-10-03 14:04:20+04:00, kaa@polly.(none) +2 -0
  Issue a warning if a user sets an option or a variable to a value that is greater than a
defined maximum for the option/variable.
  
  This is for bug #29446 "Specifying a myisam_sort_buffer > 4GB on 64 bit machines not
possible". Support for myisam_sort_buffer_size > 4 GB on 64-bit Windows will be looked
at later in 5.2.

  mysys/my_getopt.c@stripped, 2007-10-03 14:04:16+04:00, kaa@polly.(none) +7 -0
    Print a warning to the error log if a user sets an option to a value greater than the
option's maximum value.

  sql/set_var.cc@stripped, 2007-10-03 14:04:16+04:00, kaa@polly.(none) +15 -0
    Issue an SQL warning if a user assignes a value greater than the variable's maximum
value.

diff -Nrup a/mysys/my_getopt.c b/mysys/my_getopt.c
--- a/mysys/my_getopt.c	2007-02-22 17:59:54 +03:00
+++ b/mysys/my_getopt.c	2007-10-03 14:04:16 +04:00
@@ -730,7 +730,14 @@ static longlong getopt_ll(char *arg, con
   num= eval_num_suffix(arg, err, (char*) optp->name);
   if (num > 0 && (ulonglong) num > (ulonglong) optp->max_value
&&
       optp->max_value) /* if max value is not set -> no upper limit */
+  {
+    char buf[22];
+    my_getopt_error_reporter(WARNING_LEVEL,
+                             "Truncated incorrect %s value: '%s'", 
+                             optp->name, llstr(num, buf));
+    
     num= (ulonglong) optp->max_value;
+  }
   num= ((num - optp->sub_size) / block_size);
   num= (longlong) (num * block_size);
   return max(num, optp->min_value);
diff -Nrup a/sql/set_var.cc b/sql/set_var.cc
--- a/sql/set_var.cc	2007-07-30 19:27:30 +04:00
+++ b/sql/set_var.cc	2007-10-03 14:04:16 +04:00
@@ -1532,16 +1532,31 @@ bool sys_var_thd_ulong::check(THD *thd, 
 bool sys_var_thd_ulong::update(THD *thd, set_var *var)
 {
   ulonglong tmp= var->save_result.ulonglong_value;
+  char buf[22];
+  bool truncated= false;
 
   /* Don't use bigger value than given with --maximum-variable-name=.. */
   if ((ulong) tmp > max_system_variables.*offset)
+  {
+    truncated= true;
+    llstr(tmp, buf);
     tmp= max_system_variables.*offset;
+  }
 
 #if SIZEOF_LONG == 4
   /* Avoid overflows on 32 bit systems */
   if (tmp > (ulonglong) ~(ulong) 0)
+  {
+    truncated= true;
+    llstr(tmp, buf);
     tmp= ((ulonglong) ~(ulong) 0);
+  }
 #endif
+  if (truncated)
+    push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_WARN,
+                        ER_TRUNCATED_WRONG_VALUE,
+                        ER(ER_TRUNCATED_WRONG_VALUE), name,
+                        buf);
 
   if (option_limits)
     tmp= (ulong) getopt_ull_limit_value(tmp, option_limits);