compiler-warning-level-4-c4673.md

description	title	ms.date	f1_keywords	helpviewer_keywords	ms.assetid
Learn more about: Compiler Warning (level 4) C4673	Compiler Warning (level 4) C4673	11/04/2016	C4673	C4673	95626ec6-f05b-43c7-8b9a-a60a6f98dd30

Compiler Warning (level 4) C4673

throwing 'identifier' the following types will not be considered at the catch site

A throw object cannot be handled in the catch block. Each type that cannot be handled is listed in the error output immediately following the line containing this warning. Each unhandled type has its own warning. Read the warning for each specific type for more information.

The following sample generates C4673:

// C4673.cpp
// compile with: /EHsc /W4
class Base {
private:
   char * m_chr;
public:
   Base() {
      m_chr = 0;
   }

   ~Base() {
      if(m_chr)
         delete m_chr;
   }
};

class Derv : private Base {
public:
   Derv() {}
   ~Derv() {}
};

int main() {
   try {
      Derv D1;
      // delete previous line, uncomment the next line to resolve
      // Base D1;
      throw D1;   // C4673
   }

   catch(...) {}
}