Commit 3a29b7af authored by Ramil Kalimullin's avatar Ramil Kalimullin

Auto-merge

parents 40d4b577 ce78a8bd
......@@ -573,7 +573,8 @@ bool Protocol::send_fields(List<Item> *list, uint flags)
else
{
/* With conversion */
uint max_char_len;
ulonglong max_length;
uint32 field_length;
int2store(pos, thd_charset->number);
/*
For TEXT/BLOB columns, field_length describes the maximum data
......@@ -584,12 +585,21 @@ bool Protocol::send_fields(List<Item> *list, uint flags)
char_count * mbmaxlen, where character count is taken from the
definition of the column. In other words, the maximum number
of characters here is limited by the column definition.
When one has a LONG TEXT column with a single-byte
character set, and the connection character set is multi-byte, the
client may get fields longer than UINT_MAX32, due to
<character set column> -> <character set connection> conversion.
In that case column max length does not fit into the 4 bytes
reserved for it in the protocol.
*/
max_char_len= (field.type >= (int) MYSQL_TYPE_TINY_BLOB &&
field.type <= (int) MYSQL_TYPE_BLOB) ?
max_length= (field.type >= MYSQL_TYPE_TINY_BLOB &&
field.type <= MYSQL_TYPE_BLOB) ?
field.length / item->collation.collation->mbminlen :
field.length / item->collation.collation->mbmaxlen;
int4store(pos+2, max_char_len * thd_charset->mbmaxlen);
max_length*= thd_charset->mbmaxlen;
field_length= (max_length > UINT_MAX32) ? UINT_MAX32 : max_length;
int4store(pos + 2, field_length);
}
pos[6]= field.type;
int2store(pos+7,field.flags);
......
......@@ -723,6 +723,7 @@ static void do_verify_prepare_field(MYSQL_RES *result,
{
MYSQL_FIELD *field;
CHARSET_INFO *cs;
ulonglong expected_field_length;
if (!(field= mysql_fetch_field_direct(result, no)))
{
......@@ -731,6 +732,8 @@ static void do_verify_prepare_field(MYSQL_RES *result,
}
cs= get_charset(field->charsetnr, 0);
DIE_UNLESS(cs);
if ((expected_field_length= length * cs->mbmaxlen) > UINT_MAX32)
expected_field_length= UINT_MAX32;
if (!opt_silent)
{
fprintf(stdout, "\n field[%d]:", no);
......@@ -745,8 +748,8 @@ static void do_verify_prepare_field(MYSQL_RES *result,
fprintf(stdout, "\n org_table:`%s`\t(expected: `%s`)",
field->org_table, org_table);
fprintf(stdout, "\n database :`%s`\t(expected: `%s`)", field->db, db);
fprintf(stdout, "\n length :`%lu`\t(expected: `%lu`)",
field->length, length * cs->mbmaxlen);
fprintf(stdout, "\n length :`%lu`\t(expected: `%llu`)",
field->length, expected_field_length);
fprintf(stdout, "\n maxlength:`%ld`", field->max_length);
fprintf(stdout, "\n charsetnr:`%d`", field->charsetnr);
fprintf(stdout, "\n default :`%s`\t(expected: `%s`)",
......@@ -782,11 +785,11 @@ static void do_verify_prepare_field(MYSQL_RES *result,
as utf8. Field length is calculated as number of characters * maximum
number of bytes a character can occupy.
*/
if (length && field->length != length * cs->mbmaxlen)
if (length && (field->length != expected_field_length))
{
fprintf(stderr, "Expected field length: %d, got length: %d\n",
(int) (length * cs->mbmaxlen), (int) field->length);
DIE_UNLESS(field->length == length * cs->mbmaxlen);
fprintf(stderr, "Expected field length: %llu, got length: %lu\n",
expected_field_length, field->length);
DIE_UNLESS(field->length == expected_field_length);
}
if (def)
DIE_UNLESS(strcmp(field->def, def) == 0);
......
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