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<sect1>Release notes for version~4.01---11/98
<label id="release-4-01">
<p>
<itemize>
<item> <tt/relocate_TSO/ bug fixed.
<item> Weak pointers implemented, and new <tt/Weak/ library provided
(see <htmlurl name="GHC/Hugs Extension Libraries" url="libs.html">).
The <tt/ForeignObj/ interface no longer supports finalisation - use
the <tt/Weak/ interface for that.
<item> Foreign funcion interface is now complete and working.
<item> New interface file format for compatibility with Hugs. No
user-visible changes except that you'll have to update any .hi-boot
files you have lying around - check out some GHC-generated .hi files
for examples.
<item> Space leak in the compiler is partially fixed -
<tt/-dcore-lint/ is still recommended for decent space behaviour.
<item> New API to the RTS (not interesting unless you're an RTS client
writer).
<item> <tt/thawIOArray/ added to <tt/IOExts/.
<item> Many many small bugs fixed.
</itemize>
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