Bug#40657: assertion with out of range variables and traditional sql_mode

normalize error-messages

mysql-test/r/variables.result:
  show that warning uses underscore
  (sysvar-name), not hyphens (option-name)
mysql-test/t/variables.test:
  show that warning uses underscore
  (sysvar-name), not hyphens (option-name)
sql/set_var.cc:
  normalize error-messages

mysql-test/r/variables.result

@@ -1421,6 +1421,12 @@ SELECT @@global.expire_logs_days;
 @@global.expire_logs_days
 99
 SET GLOBAL expire_logs_days = @old_eld;
+SET GLOBAL auto_increment_offset=-1;
+Warnings:
+Warning	1292	Truncated incorrect auto_increment_offset value: '-1'
+SET GLOBAL auto_increment_offset=0;
+Warnings:
+Warning	1292	Truncated incorrect auto_increment_offset value: '0'
 select @@storage_engine;
 Catalog	Database	Table	Table_alias	Column	Column_alias	Type	Length	Max length	Is_null	Flags	Decimals	Charsetnr
 def					@@storage_engine	253	6	6	N	1	31	8

mysql-test/t/variables.test

@@ -1155,6 +1155,11 @@ SELECT @@global.expire_logs_days;
 # cleanup
 SET GLOBAL expire_logs_days = @old_eld;
 
+# show that warning uses underscore (sysvar-name), not hyphens (option-name)
+SET GLOBAL auto_increment_offset=-1;
+SET GLOBAL auto_increment_offset=0;
+
+
 
 #
 # Bug#41030 Wrong meta data (incorrect fieldlen)

sql/set_var.cc

@@ -1520,9 +1520,10 @@ static bool get_unsigned(THD *thd, set_var *var, ulonglong user_max,
 
     var->save_result.ulonglong_value= getopt_ull_limit_value(var->save_result.
                                                              ulonglong_value,
-							     limits, &fixed);
+                                                             limits, &fixed);
 
-    if ((warnings == 0) && throw_bounds_warning(thd, fixed, TRUE, limits->name,
+    if ((warnings == 0) && throw_bounds_warning(thd, fixed, TRUE,
+                                                var->var->name,
                                                 (longlong) unadjusted))
       return TRUE;
   }