Thanks for the fast and detailed responses. Figured it was my assumptions on multi-threaded C. Thanks, Tynan On Thu, Feb 14, 2008 at 10:43 AM, Tony Wetmore <tony.wetmore@xxxxxxxxxxxx> wrote: > Tynan Wilke wrote: > > So, the -O0 is doing what I would expect, but the -O1 version IS > > testing the global variable the first pass, but then never jumping > > back to the 0x0804853a to retrieve the new global value and then > > re-test. Is this right? > > That sounds right. Because GCC thinks the value is never going to > change, it doesn't ever bother to look at it again after the first check. > > -- > Tony Wetmore > > >
