[GHC] #14311: PowerPC: Symbol already defined

3 Oct 2017

      #14311: PowerPC: Symbol already defined
--------------------------------+----------------------------------------
           Reporter:  trommler  |             Owner:  (none)
               Type:  bug       |            Status:  new
           Priority:  normal    |         Milestone:  8.4.1
          Component:  Compiler  |           Version:  8.3
           Keywords:            |  Operating System:  Unknown/Multiple
       Architecture:  powerpc   |   Type of failure:  Building GHC failed
          Test Case:            |        Blocked By:
           Blocking:            |   Related Tickets:
Differential Rev(s):            |         Wiki Page:
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 Building HEAD I get the following error from the stage 1 compiler:
 {{{
 /tmp/ghc9106_0/ghc_4.s:796:0: error:
      Error: symbol `.Lc2l' is already defined
     |
 796 | .Lc2l:
     | ^
 `gcc' failed in phase `Assembler'. (Exit code: 1)
 rts/ghc.mk:269: recipe for target 'rts/dist/build/Exception.o' failed
 }}}

 The relevant assembly code is:
 {{{
 .section ".opd","aw"
 .align 3
 .LcV:
 .quad ..LcV,.TOC.@tocbase,0
 .previous
 .type .LcV, @function
 ..LcV:
 .LcV:
         ld      31, 8(22)
 }}}

 Note: The label has changed during recompile.

 This affects powerpc64 (ELF 1.9) and powerpc64le (ELF 2.0) on Linux and  I
 suspect also AIX.

 This could be a fallout from:
 changeset:8b007abbeb3045900a11529d907a835080129176

-- 
Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14311
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