[ARROW-8568] [C++][Python] Crash on decimal cast in debug mode

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.17.0
• Fix Version/s: 1.0.0
• Component/s: C++, Python
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/24734
• Assignee: Antoine Pitrou
• Reporter: Antoine Pitrou
• Created: 23/Apr/20 13:38
• Updated: 11/Jan/23 08:01
• Resolved: 04/Jun/20 17:40

Description

>>> arr = pa.array([Decimal('123.45')])                                                                                                                                   
>>> arr                                                                                                                                                                   
<pyarrow.lib.Decimal128Array object at 0x7efbbddd4210>
[
  123.45
]
>>> arr.type                                                                                                                                                              
Decimal128Type(decimal(5, 2))
>>> arr.cast(pa.decimal128(4, 2))                                                                                                                                         
../src/arrow/util/basic_decimal.cc:626:  Check failed: (original_scale) != (new_scale) 

Issue Links

• links to: GitHub Pull Request #7178