[Coin-discuss] Trouble with C interface: glibc memory corruption error

[Matthew Galati]

> I'm working on a interface to IPOPT from the C language, but I'm running 
> into a problem that I'm having trouble debugging.
>
> What happens is that I'm getting a 'glibc detected' 'memory corruption 
> (fast)' error :-)
>
>   
>> *** glibc detected *** /home/john/ascend/test.py: malloc(): memory 
>> corruption (fast): 0x082b21c0 ***
>> Terminated
>>     
>
> I added some commenting output to CreateIpoptProblem, and I found that 
> the error occurs somewhere inside the Ipopt::IpoptApplication 
> constructor called from within that function (IpStdCInterface.cpp line 
> ~100).
>   


That error could mean many different things.

Assuming Ipopt calls into Clp (I am not sure, never used it before) -- 
then, it might be related to the bug I just sent that John just fixed -- 
try updating Clp to trunk and see if it clears it up.

Otherwise, you'll need to run valgrind or purify to get some idea on 
what is going wrong.