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Compiler Warning (level 1) C4142

benign redefinition of type

A type is redefined in a manner that has no effect on the generated code.

To fix by checking the following possible causes:

  • A member function of a derived class has a different return type from the corresponding member function of the base class.

  • A type defined with the typedef command is redefined using different syntax.

The following sample generates C4142:

// C4142.c
// compile with: /W1
float X2;
X2 = 2.0 + 1.0;   // C4142

int main() {
   float X2;
   X2 = 2.0 + 1.0;   // OK
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