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From "Venkatesan (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (QPID-6811) Client API throws exception from destructors causing applications to terminate
Date Thu, 29 Oct 2015 06:14:27 GMT

    [ https://issues.apache.org/jira/browse/QPID-6811?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14979895#comment-14979895

Venkatesan edited comment on QPID-6811 at 10/29/15 6:13 AM:

Attaching patch
Tested on Linux and Windows

was (Author: svtesan):
Attaching patch, am new to qpid development process, not sure how to go about it - any inputs
on how to take this patch forward appreciated.
Tested on Linux and Windows

> Client API throws exception from destructors causing applications to terminate
> ------------------------------------------------------------------------------
>                 Key: QPID-6811
>                 URL: https://issues.apache.org/jira/browse/QPID-6811
>             Project: Qpid
>          Issue Type: Bug
>    Affects Versions: 0.32
>         Environment: All
>            Reporter: Venkatesan
>         Attachments: qpid_dtor_crash.patch
> Client API has couple of classes like ScopedUnlock which do "reverse" RAII - unlock in
ctor and lock in dtor. When locking fails in the destructor, it is not handled and an exception
is thrown. This causes application to crash when the exception is thrown while stack is being
> Scoped unlock does not seem the correct approach. Instead of freeing a resource in the
destructor whose failure is not catastrophic, ScopedUnlock tries to acquire a resource on
exit which can fail and there is no way this can be communicated back to the code!
> This class should be done away with and an explicit resource acquisition with proper
failure handling semantics should be used. 

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