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.