Compiler Warning (level 2) C4302
Collapse the table of content
Expand the table of content
Important This document may not represent best practices for current development, links to downloads and other resources may no longer be valid. Current recommended version can be found here. ArchiveDisclaimer

Compiler Warning (level 2) C4302

'conversion' : truncation from 'type 1' to 'type 2'

The compiler detected a conversion from a larger type to a smaller type. Information may be lost.

This warning is off by default. See Compiler Warnings That Are Off by Default for more information.

The following sample generates C4302:

// C4302.cpp
// compile with: /W2
#pragma warning(default : 4302)
int main() {
   int i;
   char c = (char) &i;     // C4302
   short s = (short) &i;   // C4302
© 2015 Microsoft