There are others in newer gcc's, and on the whole gcc does a very good
job with them, so IMHO it is worth being nice to gcc to get the advantages.
> I only see it being used a bit in the S/390 code, where the gcc
> optimizations could quite possibly break something. I think
> -ffreestanding definately should be used by the kernel to prevent gcc
> from messing with its code in broken ways.
-ffreestanding for the compiler versions that support it can be added to
arch specific flags anyway
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