[NTLUG:Discuss] Stack size or malloc problem

[Greg Edwards]

Ralph Green, Jr wrote:
> Howdy,
>   I have been having a lot of problems with a program I am working on
> that uses the MySQL database.  It is a C program and itdoes many
> thousands of database updates.  I start having odd little problems that
> look to me like either 1)insufficient stack space, or 2) malloc and free
> problems.  I know my mallocs and free are right, but I don't know about
> MySQLs.


> Ralph
> 

Sounds like a corrupted stack rather than a stack overflow.  Make very 
sure that all of your local vars have been initialized before sending to 
a func.  I know that sounds like a no brainer, but it's one of the most 
common causes for something like this.

Unless you are really going deep into some recursive function or passing 
a ton of pass by value structs its hard to blow the stack.

I've attached a function you can plug into your code to watch the memory 
on a given process.  You'll have to modify it to fit your needs, of course.

-- 
Greg Edwards

Software Engineering Services - http://consult.nas-inet.com
Custom Hosted Websites        - http://www.nas-inet.com
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