[GHC] #8134: ghc enters a loop while building 7.6.3 for powerpc64 platform.

[GHC]

#8134: ghc enters a loop while building 7.6.3 for powerpc64 platform.
-----------------------------+-------------------------------------
       Reporter:  k0da       |             Owner:
           Type:  bug        |            Status:  new
       Priority:  normal     |         Milestone:  7.6.3
      Component:  Compiler   |           Version:  7.6.3
       Keywords:             |  Operating System:  Unknown/Multiple
   Architecture:  powerpc64  |   Type of failure:  None/Unknown
     Difficulty:  Unknown    |         Test Case:
     Blocked By:             |          Blocking:
Related Tickets:             |
-----------------------------+-------------------------------------
 It enters a loop around
  3414s] "/home/abuild/rpmbuild/BUILD/ghc-boot/bin/ghc" -M -dep-makefile
 compiler/stage1/build/.depend-v.haskell.tmp  -include-pkg-deps -H32m -O
 -package-db libraries/bootstrapping.conf -package-name ghc-7.6.3 -hide-
 all-packages -i -icompiler/basicTypes -icompiler/cmm -icompiler/codeGen
 -icompiler/coreSyn -icompiler/deSugar -icompiler/ghci -icompiler/hsSyn
 -icompiler/iface -icompiler/llvmGen -icompiler/main -icompiler/nativeGen
 -icompiler/parser -icompiler/prelude -icompiler/profiling
 -icompiler/rename -icompiler/simplCore -icompiler/simplStg
 -icompiler/specialise -icompiler/stgSyn -icompiler/stranal
 -icompiler/typecheck -icompiler/types -icompiler/utils
 -icompiler/vectorise -icompiler/stage1/build -icompiler/stage1 ...

 building 7.6.1 didn't had such problem

 strace shows:
 futex(0x1002420f97c, FUTEX_WAIT_PRIVATE, 1137, NULL) = ? ERESTARTSYS (To
 be restarted)
 --- SIGVTALRM (Virtual timer expired) @ 0 (0) ---
 rt_sigreturn(0x1a)                      = -1100117768572
 futex(0x1002420f97c, FUTEX_WAIT_PRIVATE, 1137, NULL) = ? ERESTARTSYS (To
 be restarted)
 --- SIGVTALRM (Virtual timer expired) @ 0 (0) ---
 rt_sigreturn(0x1a)                      = -1100117768572
 futex(0x1002420f97c, FUTEX_WAIT_PRIVATE, 1137, NULL) = ? ERESTARTSYS (To
 be restarted)
 --- SIGVTALRM (Virtual timer expired) @ 0 (0) ---
 rt_sigreturn(0x1a)                      = -1100117768572
 futex(0x1002420f97c, FUTEX_WAIT_PRIVATE, 1137, NULL) = ? ERESTARTSYS (To
 be restarted)
 --- SIGVTALRM (Virtual timer expired) @ 0 (0) ---
 rt_sigreturn(0x1a)                      = -1100117768572
 futex(0x1002420f97c, FUTEX_WAIT_PRIVATE, 1137, NULL) = ? ERESTARTSYS (To
 be restarted)
 --- SIGVTALRM (Virtual timer expired) @ 0 (0) ---
 rt_sigreturn(0x1a)                      = -1100117768572

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8134>
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