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Merging from 5.1.

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This commit is contained in:
Alexander Barkov 2011-01-17 15:26:13 +03:00
commit 498a5bbc82
4 changed files with 34 additions and 9 deletions
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12
sql/item_strfunc.cc
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@ -2959,22 +2959,16 @@ String *Item_func_conv_charset::val_str(String *str)
DBUG_ASSERT(fixed == 1);
if (use_cached_value)
return null_value ? 0 : &str_value;
/*
Here we don't pass 'str' as a parameter to args[0]->val_str()
as 'str' may point to 'str_value' (e.g. see Item::save_in_field()),
which we use below to convert string.
Use argument's 'str_value' instead.
*/
String *arg= args[0]->val_str(&args[0]->str_value);
String *arg= args[0]->val_str(str);
uint dummy_errors;
if (!arg)
{
null_value=1;
return 0;
}
null_value= str_value.copy(arg->ptr(),arg->length(),arg->charset(),
null_value= tmp_value.copy(arg->ptr(), arg->length(), arg->charset(),
conv_charset, &dummy_errors);
return null_value ? 0 : check_well_formed_result(&str_value);
return null_value ? 0 : check_well_formed_result(&tmp_value);
}
void Item_func_conv_charset::fix_length_and_dec()