Is it possible const bool value to be changed?

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C++

Hi, everyone.

I made a class and I initialize a const bool value in constructor.
And I didn't make any code to change the value in the class.
But after an object is created, its value is changed.
I checked encoding, but there was no problem.
(In my project, unicode should be used.)
I don't have any idea the reason.
Can you give me any advice?

I develop C++ program with visual studio 2013 in Windows 8.1.

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// constructor
CCube::CCube( const bool bControlCtrlPts )
    : _bControlCtrlPts( bControlCtrlPts )
{
}