'identifier' : 'const' static/global data initialized with compiler generated default constructor fills the object with zeros
A const global or static instance of a non-trivial class is initialized with a compiler-generated default constructor. For example:
class X {
public:
int m_data;
};
const X x1; // Generates warning C4268
As this instance of the class is const, the value of m_data
can never be changed.