So, having heard nothing back on this topic, I've decided to just try it
and see how it looks.
Below are the proposed contents of the new file intrin-impl.h, which
gets included at the bottom of intrin.h. It's still a little rough, but
it should be enough to decide if I'm heading in the right
Since the 64 bit compiler uses SEH and the Borland patent expires next
year, I'll like to know how plausible it is to expect SEH on the 32 bit
compiler for the gcc 4.9 timeframe. That is, how difficult the
implementation is and how much interest it attracts from the developers.
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