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Compiler Warning (level 4) C4268

'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.

// C4268.cpp
// compile with: /c /LD /W4
class X {
   int m_data;

const X x1;   // C4268

As this instance of the class is const, the value of m_data cannot be changed.