Selectiv on/off-turning of warnings

[Mo McKinlay]

# I think there would be a long debate whether it is reasonable. For one
# thing, some people claim that #pragma is not reasonable. Since the
# standard says a compiler can do anything it wants when it sees a
# #pragma, I believe some version of gcc used to invoke Emacs when it
# saw a #pragma :-)

Certainly the Borland compilers rely heavily on #pragmas all sorts of
things - mostly for function-local warning selection, but it does cover
other bases too, such as controlling precompiled headers (#pragma
hdrstop). 

My personal view is that there should never be #pragmas implemented that
affect code generation, because it doesn't help portability issues any
(#pragma itself doesn't, but relying on it to alter code generation
behavior would be much worse, IMVHO). 

-- 
Mo McKinlay                                T: +44 (0) 709 22 55 05  x1
Chief Software Architect                   F: +44 (0) 709 22 55 05  x3
inter/open                                 E: mmckinlay@labs.interopen.org
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