[Dillo-dev] cookie 32-bit time wrapping and possible gcc problem

I wrote:

Johannes wrote:

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On Mon, Mar 08, 2010 at 06:33:12PM +0000, corvid wrote:

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Tried running my test/cookies program and got two failures from the 32-bit timestamp wrapping tests.

Turned out that I had -O2 set. -O succeeds, and no optimization succeeds. If I insert a MSG("exptime+local_shift %ld\n", exptime + local_shift); after setting local_shift in Cookies_expires_attr(), it works even with -O2.

This is with gcc-4.3.3. I'm going to get 4.4.3 and see what happens...

Same behaviour with 4.4.3.

Found out what's going on. Signed overflow is undefined, and -O2 gives -fstrict-overflow, which assumes that overflow won't happen. So I will do something of some sort about this :)