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Date:	Mon, 17 Nov 2003 08:30:23 +1100 (EST)
From:	=?iso-8859-1?q?Danny=20Smith?= <danny_r_smith_2001 AT yahoo DOT co DOT nz>
Subject:	RE: Exporting const variables from DLLs (GCC bug?)
To:	cygwin AT cygwin DOT com
MIME-Version:	1.0

Jon Foster wrote:

> Given this source code: 
> extern const int meaning_of_life __declspec(dllexport);
> const int meaning_of_life __declspec(dllexport) = 42;
> 
> 
> GCC complains: 
> $ c++ -g -O2 -c test.cxx -o test.o
> test.cxx:2: error: external linkage required for symbol 'const int
>    meaning_of_life' because of 'dllexport' attribute
>


It is a bug in gcc.  The above code compiles okay with C, but
strangely, not C++.  For some reason, g++ does not immediately
mark the the definition of global constants as public when they
are defined after a prior declaration.  I have a fix that I will
submit to gcc-patches after reg-testing

Danny

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