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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug debug/45997] [4.6 Regression] __unknown__ type name for typedef'd int
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45997

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
         AssignedTo|unassigned at gcc dot       |jakub at gcc dot gnu.org
                   |gnu.org                     |

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2010-11-03 14:08:21 UTC ---
Created attachment 22251
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22251
gcc46-pr45997.patch

That said, I think this patch should fix this case (while of course not ruling
out other possibilities to get __unknown__ base type; but that really is a
matter of the DWARF wording being relaxed or not) and is IMHO the right thing
to do.