warn_impl_s2u

Controls the issuing of warning messages for implicit conversions between the signed int and unsigned int data types.

Syntax

#pragma warn_impl_s2u_conv on | off | reset

Remarks

If you enable this pragma, the compiler issues a warning message for implicitly converting either from signed int to unsigned int or vice versa. Example of implicit conversions between signed int and unsigned int provides an example.

Listing 1. Example of implicit conversions between signed int and unsigned int

#pragma warn_impl_s2u_conv on

signed int si;
unsigned int ui;

int main()
{
    ui = si; /* WARNING */
    si = ui; /* WARNING */

#pragma warn_impl_s2u_conv off
    ui = si; /* OK */
    si = ui; /* OK */
}

By default, this pragma is enabled.