Compiler Warning (level 4) C4365
TOC
Collapse the table of content
Expand the table of content
This documentation is archived and is not being maintained.

Compiler Warning (level 4) C4365

'action' : conversion from 'type_1' to 'type_2', signed/unsigned mismatch

For example, you tried to convert an unsigned value to a signed value.

C4365 is off by default. For more information, see Compiler Warnings That Are Off by Default.

The following sample generates C4365.

// C4365.cpp
// compile with: /W4
#pragma warning(default:4365)

int f(int) { return 0; }
void Test(size_t i) {}

int main() {
   unsigned int n = 10;
   int o = 10;
   n++;
   f(n);   // C4365
   f(o);   // OK

   Test( -19 );   // C4365
}
Show:
© 2016 Microsoft