[gecode-users] Heap memory free error

[Maity, Ashis K]

Hello,

Recently I upgraded my Gecode from 3.4.2 to 3.5.0. I have been running my old problems to do sanity check. While many of the old problems do run fine in newer version, I am getting this strange error on some problems and can't figure out the reason. These problems still run fine when I use a server that is running old version of the Gecode. I tried cleaning, rebuilding, restarting, reloading etc. Any help is appreciated.
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HEAP[AutomatedScheduler++.exe]: Invalid Address specified to RtlFreeHeap( 00B90000, 015059B0 )
Windows has triggered a breakpoint in AutomatedScheduler++.exe.

This may be due to a corruption of the heap, which indicates a bug in AutomatedScheduler++.exe or any of the DLLs it has loaded.

This may also be due to the user pressing F12 while AutomatedScheduler++.exe has focus.

The output window may have more diagnostic information.



--- Here is the stack trace ---
	ntdll.dll!7c90120e() 	
 	[Frames below may be incorrect and/or missing, no symbols loaded for ntdll.dll]	
 	ntdll.dll!7c96ee31() 	
 	ntdll.dll!7c96f26e() 	
 	ntdll.dll!7c970456() 	
 	ntdll.dll!7c94bafc() 	
 	ntdll.dll!7c91a1ba() 	
 	ntdll.dll!7c91a351() 	
 	msvcr90.dll!78583c1b() 	
>	AutomatedScheduler++.exe!Gecode::Heap::rfree(void * p=0x015795e0)  Line 332 + 0xc bytes	C++
 	AutomatedScheduler++.exe!Gecode::Heap::free<Gecode::IntVar>(Gecode::IntVar * b=0x015795e0, unsigned long n=18)  Line 385	C++
 	AutomatedScheduler++.exe!Gecode::Heap::free<Gecode::IntVar>(Gecode::IntVar * b=0x015795e0, int n=18)  Line 402	C++
 	AutomatedScheduler++.exe!Gecode::ArgArrayBase<Gecode::IntVar>::~ArgArrayBase<Gecode::IntVar>()  Line 1579	C++
 	AutomatedScheduler++.exe!Gecode::VarArgArray<Gecode::IntVar>::~VarArgArray<Gecode::IntVar>()  + 0x58 bytes	C++
 	AutomatedScheduler++.exe!Gecode::IntVarArgs::~IntVarArgs()  + 0x58 bytes	C++
 	AutomatedScheduler++.exe!Scheduler::postResourcePick()  Line 213 + 0x5a bytes	C++
 	AutomatedScheduler++.exe!Scheduler::afterResourcePick(Gecode::Space & home={...})  Line 108	C++
 	GecodeKernel-3-5-0-r-x86.dll!Gecode::FunctionBranch::commit()  + 0xf bytes	C++
 	GecodeKernel-3-5-0-r-x86.dll!Gecode::Space::_commit()  + 0xf1 bytes	C++
 	GecodeSearch-3-5-0-r-x86.dll!Gecode::Search::WorkerToEngine<Gecode::Search::Sequential::BAB>::next()  + 0x149 bytes	C++
 	AutomatedScheduler++.exe!Gecode::BAB<Scheduler>::next()  Line 57 + 0x20 bytes	C++
 	AutomatedScheduler++.exe!threadFunction(void * a=0x00b965a8)  Line 231 + 0xb bytes	C++
 	AutomatedScheduler++.exe!ThreadWrapper<void *>::Execute()  Line 321 + 0x18 bytes	C++
 	AutomatedScheduler++.exe!ThreadWrapper<void *>::ThreadRoutingFunction(void * pParam=0x00b96558)  Line 274	C++
 	msvcr90.dll!78543433() 	
 	msvcr90.dll!785434c7() 	
 	kernel32.dll!7c80b729() 

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Thanks,

Ashis