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MDEV-18899: Server crashes in Field::set_warning_truncated_wrong_value

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To fix the crash there we need to make sure that the
server while storing the statistical values in statistical tables should do it
in a multi-byte safe way.
Also there is no need to throw warnings if there is truncation while storing
values from statistical fields.
This commit is contained in:
Varun Gupta
2019-03-28 13:14:49 +05:30
parent 1e9c2b2305
commit 38cad6875f
5 changed files with 166 additions and 5 deletions
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7
sql/field.cc
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@ -7027,8 +7027,11 @@ Field_longstr::check_string_copy_error(const String_copier *copier,
if (!(pos= copier->most_important_error_pos()))
return FALSE;
convert_to_printable(tmp, sizeof(tmp), pos, (end - pos), cs, 6);
set_warning_truncated_wrong_value("string", tmp);
if (!is_stat_field)
{
convert_to_printable(tmp, sizeof(tmp), pos, (end - pos), cs, 6);
set_warning_truncated_wrong_value("string", tmp);
}
return TRUE;
}