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Re: gcc 3.3.3, const symbols and shared libraries


Gerrit P. Haase wrote:
Norton Allen wrote:

I have seen the discussions at

http://sourceware.org/ml/cygwin/2004-09/msg01101.html

referenced at

http://cygwin.com/ml/cygwin/2005-03/msg00048.html

regarding gcc 3.3.3's placement of const symbols into
rdata which then cannot be properly initialized.
This problem seems pretty fundamental. Can anyone
tell me whether there has been any followup to
this? Is it considered a cygwin problem or a
gcc problem? Has it been addressed in 3.4.1?
What are developers doing? Going back to 3.3.1?


The rule is to not use const symbols in shared libraries
if they are not really const;)

What do you mean by "really?" These are const from the standpoint of "defined once and never changed thereafter," but they are not finally defined until the link against shared libraries.

It's currently an issue because it requires changes
to quite a few packages. In the past week, I had to
remove const declarations from glib-2.6.3 and
gtk+-2.6.4 to get them to compile. Are these changes
that are uniquely required by cygwin, or are these
going to be required for all gcc platforms?

-Norton
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