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

["Micah Kornfield (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARROW-187?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15372255#comment-15372255 ] 

Micah Kornfield commented on ARROW-187:
---------------------------------------

based on conversation on the mailing list the consensus seems to be that unguarded allocations are fine for metadata but should be required to all file handle/data allocations.  This is the pattern we currently use in the code base.  I will update documentation to reflect this and then close this issue.

> [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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