[jira] [Commented] (ARROW-187) [C++] Decide on how pedantic we want to be about exceptions

["Wes McKinney (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARROW-187?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15270995#comment-15270995 ] 

Wes McKinney commented on ARROW-187:
------------------------------------

Good point. I don't have enough experience to know how real the risk is, but it definitely safer to avoid expensive allocations in the constructor (via static factory + Init method).

> [C++] Decide on how pedantic we want to be about exceptions
> -----------------------------------------------------------
>
>                 Key: ARROW-187
>                 URL: https://issues.apache.org/jira/browse/ARROW-187
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: C++
>            Reporter: Micah Kornfield
>
> We currently have code sprinkled around constructors that can technically fail because we either do a memcpy/allocation via vector copy constructor (we might be using a move constructor in places) and make_shared<>.
> These are very small memory allocations but they can throw std::bad_alloc.
> Technically, we would need to convert these to use Init or static factories.
> (types.h is one place to look)



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