[
https://issues.apache.org/jira/browse/ARROW-13154?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Ying Zhou updated ARROW-13154:
------------------------------
Description:
Due to the following in [builder_union.cc|http://builder_union.cc/] (Line 67-70)
{color:#172b4d}{color:#9cdcfe}type_id_to_children_{color}.{color:#dcdcaa}resize{color}({color:#9cdcfe}union_type{color}.{color:#dcdcaa}max_type_code{color}()
+ {color:#b5cea8}1{color}, {color:#569cd6}nullptr{color});{color}
{color:#172b4d} {color:#dcdcaa}DCHECK_LT{color}({color}
{color:#172b4d}
{color:#9cdcfe}type_id_to_children_{color}.{color:#dcdcaa}size{color}(),{color}
{color:#172b4d}
{color:#569cd6}static_cast{color}<{color:#569cd6}decltype{color}(type_id_to_children_)::size_type>({color:#4ec9b0}UnionType{color}::kMaxTypeCode));{color}
{color:#172b4d} {color}
{color:#172b4d} and [type.cc|http://type.cc/] (Line 640-644){color}
{color:#172b4d} {color:#569cd6}uint8_t{color}
{color:#4ec9b0}UnionType{color}::{color:#dcdcaa}max_type_code{color}()
{color:#569cd6}const{color} {{color}
{color:#172b4d} {color:#c586c0}return{color}
{color:#9cdcfe}type_codes_{color}.{color:#dcdcaa}size{color}() ==
{color:#b5cea8}0{color}{color}
{color:#172b4d} ? {color:#b5cea8}0{color}{color}
{color:#172b4d} :
*{color:#4ec9b0}std{color}::{color:#dcdcaa}max_element{color}({color:#9cdcfe}type_codes_{color}.{color:#dcdcaa}begin{color}(),
{color:#9cdcfe}type_codes_{color}.{color:#dcdcaa}end{color}());{color}
{color:#172b4d} }{color}
In practice type codes of the union type must always be below or equal to 125
which is not intended behavior.
was:
Due to the following in [builder_union.cc|http://builder_union.cc/] (Line 67-70)
{color:#9cdcfe}type_id_to_children_{color}.{color:#dcdcaa}resize{color}({color:#9cdcfe}union_type{color}.{color:#dcdcaa}max_type_code{color}()
+ {color:#b5cea8}1{color}, {color:#569cd6}nullptr{color});
{color:#dcdcaa}DCHECK_LT{color}(
{color:#9cdcfe}type_id_to_children_{color}.{color:#dcdcaa}size{color}(),
{color:#569cd6}static_cast{color}<{color:#569cd6}decltype{color}(type_id_to_children_)::size_type>({color:#4ec9b0}UnionType{color}::kMaxTypeCode));
and [type.cc|http://type.cc/] (Line 640-644)
{color:#569cd6}uint8_t{color}
{color:#4ec9b0}UnionType{color}::{color:#dcdcaa}max_type_code{color}()
{color:#569cd6}const{color} {
{color:#c586c0}return{color}
{color:#9cdcfe}type_codes_{color}.{color:#dcdcaa}size{color}() ==
{color:#b5cea8}0{color}
? {color:#b5cea8}0{color}
:
*{color:#4ec9b0}std{color}::{color:#dcdcaa}max_element{color}({color:#9cdcfe}type_codes_{color}.{color:#dcdcaa}begin{color}(),
{color:#9cdcfe}type_codes_{color}.{color:#dcdcaa}end{color}());
}
In practice type codes of the union type must always be below or equal to 125
which is not intended behavior.
> [C++] Unions can not have 126 and 127 as type_codes
> ---------------------------------------------------
>
> Key: ARROW-13154
> URL: https://issues.apache.org/jira/browse/ARROW-13154
> Project: Apache Arrow
> Issue Type: Bug
> Components: C++
> Reporter: Ying Zhou
> Assignee: Ying Zhou
> Priority: Minor
> Fix For: 5.0.0
>
>
> Due to the following in [builder_union.cc|http://builder_union.cc/] (Line
> 67-70)
>
>
> {color:#172b4d}{color:#9cdcfe}type_id_to_children_{color}.{color:#dcdcaa}resize{color}({color:#9cdcfe}union_type{color}.{color:#dcdcaa}max_type_code{color}()
> + {color:#b5cea8}1{color}, {color:#569cd6}nullptr{color});{color}
> {color:#172b4d} {color:#dcdcaa}DCHECK_LT{color}({color}
> {color:#172b4d}
> {color:#9cdcfe}type_id_to_children_{color}.{color:#dcdcaa}size{color}(),{color}
> {color:#172b4d}
> {color:#569cd6}static_cast{color}<{color:#569cd6}decltype{color}(type_id_to_children_)::size_type>({color:#4ec9b0}UnionType{color}::kMaxTypeCode));{color}
> {color:#172b4d} {color}
> {color:#172b4d} and [type.cc|http://type.cc/] (Line 640-644){color}
> {color:#172b4d} {color:#569cd6}uint8_t{color}
> {color:#4ec9b0}UnionType{color}::{color:#dcdcaa}max_type_code{color}()
> {color:#569cd6}const{color} {{color}
> {color:#172b4d} {color:#c586c0}return{color}
> {color:#9cdcfe}type_codes_{color}.{color:#dcdcaa}size{color}() ==
> {color:#b5cea8}0{color}{color}
> {color:#172b4d} ? {color:#b5cea8}0{color}{color}
> {color:#172b4d} :
> *{color:#4ec9b0}std{color}::{color:#dcdcaa}max_element{color}({color:#9cdcfe}type_codes_{color}.{color:#dcdcaa}begin{color}(),
> {color:#9cdcfe}type_codes_{color}.{color:#dcdcaa}end{color}());{color}
> {color:#172b4d} }{color}
>
> In practice type codes of the union type must always be below or equal to
> 125 which is not intended behavior.
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