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https://issues.apache.org/jira/browse/AMQCPP-529?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13860063#comment-13860063
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omri zomet commented on AMQCPP-529:
-----------------------------------
The char[] allocation isn't in the AMQ-CPP library, but in the callback
function onMessage() of my MessageListener.
The array is of size 16384.
I can post a stack trace - however not sure it will help, as it simply crashes
in one of the sub-function being called (SIGSEGV).
If I declare a bigger array (say 200,000) in onMessage() itself - I get a crash
on calling onMessage() - see below:
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x2ce1b90 (LWP 6128)]
0x083c502a in CActiveMQClient::onMessage (this=0x8b5b5b0, message=<error
reading variable>) at ActiveMQClient.cpp:703
703 {
> Crash in Threads due to small stack size (set to 32768 bytes)
> -------------------------------------------------------------
>
> Key: AMQCPP-529
> URL: https://issues.apache.org/jira/browse/AMQCPP-529
> Project: ActiveMQ C++ Client
> Issue Type: Bug
> Components: Decaf
> Affects Versions: 3.8.1
> Environment: linux50
> Reporter: omri zomet
> Assignee: Timothy Bish
> Priority: Critical
>
> Using version 3.8.1 of activemq-cpp (after using version 3.4.5) - we have
> suffered a crash in code running in amq threads.
> Investigation shows that this happens when trying to use a char[] buffer on
> stack of size > 16384 , probably due to the stack size being of size 32768.
> Thread::Thread() constructors call initializeSelf() with stackSize=(-1),
> which
> in turn call createThreadInstance() with negative stackSize value (hence
> using PLATFORM_DEFAULT_STACK_SIZE).
> Relevant code below:
> ----------------------
> #define PLATFORM_DEFAULT_STACK_SIZE 0x8000
> -----------------------
> void createThreadInstance(ThreadHandle* thread, long long stackSize, int
> priority, bool suspended, threadingTask threadMain, void* threadArg) {
> if (stackSize <= 0) {
> stackSize = PLATFORM_DEFAULT_STACK_SIZE;
> }
> ...
> }
> ----------------------
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