[nightly] 2013-05-12 cam-02-unx Failure building master (perf) on i686-pc-linux-gnu

[GHC Build Reports]

Branch            = master
Flavour           = perf
Build location    = /playpen/gmainlan/nightly-new/cam-02-unx/master
Source repository = /home/gmainlan/ghc-mirror
PATH              = /home/gmainlan/local/linux-i386/ghc-7.4.2-hp-2012.4.0.0/bin:/usr/bin:/bin

Nightly run begun at Sun May 12 18:02:11 BST 2013

cam-02-unx building master (perf) on i686-pc-linux-gnu
**** Checking out new source tree                 ... ok.
**** Configuring build flavour perf               ... ok.
GHC Version 7.7.20130512
**** Building stage 1 compiler                    ... failed; relevant barfage is below.
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Respository hashes:
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ghc-tarballs|18e0c37f8023abf469af991e2fc2d3b024319c27
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-----------------------------------------------------------------------------

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The last 30 lines of /playpen/gmainlan/nightly-new/cam-02-unx/master/2013-05-12/logs/stage1.log are
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ghc22975_1.c:501:0:
     Error: junk `.get_pc_thunk.bx' after expression

ghc22975_1.c:530:0:
     Error: junk `.get_pc_thunk.bx' after expression

ghc22975_1.c:549:0:
     Error: junk at end of line, first unrecognized character is `1'

ghc22975_1.c:550:0:
     Error: junk at end of line, first unrecognized character is `1'

ghc22975_1.c:551:0:  Error: Missing symbol name in directive

ghc22975_1.c:551:0:
     Error: junk at end of line, first unrecognized character is `1'

ghc22975_1.c:552:0:  Error: Missing symbol name in directive

ghc22975_1.c:552:0:
     Error: junk at end of line, first unrecognized character is `.'

ghc22975_1.c:553:0:
     Error: junk at end of line, first unrecognized character is `1'
make[1]: *** [libraries/base/dist-install/build/System/Posix/Internals.o] Error 1
make[1]: *** Deleting file `libraries/base/dist-install/build/System/Posix/Internals.o'
make: *** [stage1_libs] Error 2
Command exited with non-zero status 2
2050.82user 729.62system 48:35.28elapsed 95%CPU (0avgtext+0avgdata 1610912maxresident)k
102984inputs+1618136outputs (58major+46019614minor)pagefaults 0swaps


Nightly run ended at Sun May 12 18:54:30 BST 2013