[Ur] More questions
Gian Perrone
gdpe at itu.dk
Sun Dec 12 21:46:38 EST 2010
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On 12/13/10 1:33 PM, Adam Chlipala wrote:
> Second, I reproduced your bug, and I think I've isolated it to what
> looks like a bug in GCC, related to use of a GCC C extension. Would
> anyone mind sanity-checking this relatively-minimized source file for me?
> http://adam.chlipala.net/tmp/test.c
> With my GCC (and presumably with Marc's, too), it prints only one line
> of output, though I was expecting two. It seems GCC is dropping certain
> side effects that occur inside struct initializers in certain contexts.
> That is the root cause of the dropped SQL side effects from the larger
> example.
>
I can confirm that on my version of GCC (gcc version 4.2.1 (Apple Inc.
build 5664)), I only get one line of output, irrespective of the
optimisation level.
Gian
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