Are duplicate exception handlers legal? That is, is an implementation
required to accept them, or are they a grey area in the standard,
(optional, undefined, non-portable)?

GNU C++ accepts them without any complaint
Sun C++ accepts them but gives warnings
MSVC++  rejects them as errors (apparently)

I have a situation where the following is a solution except for
MSVC++:

/* Don't let the application trap our private exception */
#define catch(e) \
 catch(private_exception) {throw;}\
 catch(e)

but of course this produces duplicate handlers where multiple
catch blocks are used. I now need to find another way around
this but am interested to know if it's supposed to be portable.

--
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| Ross Johnson         |   | E-Mail: rpj@ise.canberra.edu.au
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