-Wconversion generates false warnings for the following clean code:

{
        char c = 1;
        char c2 = 2;

        // warning: conversion to ‘char’ from ‘int’ may alter its value
        c >>= 1;
        c += (char) 1;
        c += c2;
        c = ~c2;
}


-- 
           Summary: -Wconversion generates false warnings
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: photon at seznam dot cz


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40752