------- Comment #4 from ian at airs dot com 2009-07-14 22:23 ------- Manu, I agree that these warnings are in some sense technically correct but they are not useful. They can't point to any actual bug. I guess would be that if every input to the expression has the size of the target of the expression, then the warning should be suppressed.
-- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40752