------- Comment #6 from gary at intrepid dot com 2010-01-21 21:33 ------- (In reply to comment #5) > >Just to be clear, what aspect of the test case is undefined? > > The access of the integer variable via an union. That is the whole point of > strict aliasing :).
I thought that might be what you were referring to, and understand how that is undefined behavior. It sounds to me like the "resolution" of this issue is that if the user had compiled with -Wall -Werror, then GCC would have issued the warning that I'm looking for, but otherwise the test case is just another casualty of "undefined behavior". -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42830
