[Bug target/46072] AIX linker chokes on debug info for uninitialized static variables

["michael.haubenwallner at salomon dot at" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46072

--- Comment #37 from Michael Haubenwallner <michael.haubenwallner at salomon dot at> 2012-04-16 13:29:06 UTC ---
A few more references:
The fix for this one issue is:
https://www-304.ibm.com/support/docview.wss?uid=isg1IZ98134

But this introduces /usr/ccs/bin/as coredump during gcc bootstrap
(strstream.o):
https://www-304.ibm.com/support/docview.wss?uid=isg1IV01126

Just guessing, but maybe the whole thing was introduced by:
https://www-304.ibm.com/support/docview.wss?uid=isg1IZ87535

Based on the filesets shown in the APARs for each AIX release/TL/SP, here's a
list of maybe broken/working AIX levels, although I'm unable to verify for
sure, as the broken machines got the interim fix installed here for IV01126
(supersedes interim fix for IZ98134):

             +--------------+----------------+
             | broken since |  fixed since   |
-------------+--------------+----------------+
AIX 5.3 TL9  |           <works>             |
        TL10 |  SP6 (1107)  | <still broken> |
        TL11 |  SP6 (1107)  |   SP8 (1140)   |
        TL12 |  SP3 (1107)  |   SP5 (1140)   |
-------------+--------------+----------------+
AIX 6.1 TL2  |           <works>             |
        TL3  |  SP9 (1112)  | <still broken> |
        TL4  |  SP9 (1112)  |   SP11 (1140)  |
        TL5  |  SP5 (1112)  |   SP7  (1140)  |
        TL6  |  SP4 (1112)  |   SP6  (1140)  |
        TL7  |           <works>             |
-------------+--------------+----------------+
AIX 7.1 TL0  |  SP3 (1115)  | <still broken> |
        TL1  |           <works>             |
-------------+--------------+----------------+

Even if AIX 7.1 TL0 SP4 was released at 1140 too, it doesn't seem to contain
IV01126 - maybe TL0 SP5 will do.