Messages in this thread | | | Subject | Re: Kernel 2.2.17 with RedHat 7 Problem ! | From | David Wragg <> | Date | 23 Oct 2000 16:22:07 +0000 |
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Aaron Sethman <androsyn@ratbox.org> writes: > Try compiling the said code with -fno-strict-aliasing, and your problems > will be solved.
Yes, but I don't think I should have to give gcc flags to get it to obey the C standard (my example can easily be turned into a self-contained strictly conforming program, in order to qualify for the full weight of the standard).
> gcc is doing the right thing, just not what you expected.
gcc is not doing the right thing. My example contains no type punning or other deviations from ISO C which might warrant -fno-strict-aliasing. The program should behave as if the assignments are evaluated sequentially; with this compiler, it does not.
> The kernel already checks to see if gcc can grok -fno-strict-aliasing
Yes, since the kernel needs to say to gcc "I know this code relies on more than the ISO C semantics, so please be gentle with it".
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