Was this page helpful?
Your feedback about this content is important. Let us know what you think.
Additional feedback?
1500 characters remaining
Compiler Warning C4430
Collapse the table of content
Expand the table of content

Compiler Warning C4430

Error Message

missing type specifier - int assumed. Note: C++ does not support default-int

This error can be generated as a result of compiler conformance work that was done for Visual C++ 2005: all declarations must now explicitly specify the type; int is no longer assumed. See Breaking Changes in the Visual C++ 2005 Compiler for more information.

C4430 is always issued as an error. You can turn off this warning with the #pragma warning or /wd; see warning or /w, /Wn, /WX, /Wall, /wln, /wdn, /wen, /won (Warning Level) for more information.


The following sample generates C4430.

// C4430.cpp
// compile with: /c
struct CMyClass {
   CUndeclared m_myClass;  // C4430
   int m_myClass;  // OK

typedef struct {
   POINT();   // C4430
   // try the following line instead
   // int POINT();
   unsigned x;
   unsigned y;

Community Additions

© 2015 Microsoft