Commit fb33da5f authored by unknown's avatar unknown

Bug#25815 Data truncated for column TEXT

Problem: "Data truncated" warning was incorrectly generated
when storing a Japanese character encoded in utf8
into a cp932 column.
Reason: Incorrect wrong warning condition
compared the original length of the character in bytes
(which is 3 in utf8) to the converted length of the
character in bytes (which is 2 in cp932).
Fix: use "how many bytes were scanned from input" instead
of "how many bytes were put to the column" in the condition.


mysql-test/r/ctype_cp932.result:
  Adding test case
mysql-test/t/ctype_cp932.test:
  Adding test case
sql/field.cc:
  Change warning condition from:
  "if number of bytes written to destination is less than full source length"
  to
  "if number of bytes read from source is less than full source length"
parent 501bf6de
......@@ -11353,3 +11353,15 @@ a
a
a
drop table t1;
set names utf8;
create table t1 (a text) default character set cp932;
insert into t1 values (_utf8 0xE38182);
show warnings;
Level Code Message
select * from t1;
a
select hex(a) from t1;
hex(a)
82A0
drop table t1;
......@@ -413,3 +413,14 @@ select * from t1;
insert into t1 values ('abc');
select * from t1;
drop table t1;
#
# Bug#25815 Data truncated for column TEXT
#
set names utf8;
create table t1 (a text) default character set cp932;
insert into t1 values (_utf8 0xE38182);
show warnings;
select * from t1;
select hex(a) from t1;
drop table t1;
......@@ -7024,7 +7024,7 @@ int Field_blob::store(const char *from,uint length,CHARSET_INFO *cs)
cannot_convert_error_pos, from + length))
return 2;
if (copy_length < length)
if (from_end_pos < from + length)
{
report_data_too_long(this);
return 2;
......
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