PowerPC: Symbol already defined

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:8b007abb

Trac metadata

Trac field	Value
Version	8.3
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler
Test case
Differential revisions
BlockedBy
Related
Blocking
CC	hvr
Operating system
Architecture

changed milestone to %8.4.1

changed weight to 5

added Tbug Trac import labels

mentioned in commit f8e7fece

closed

Trac metadata

Trac field	Value
Resolution	Unresolved → ResolvedFixed

added ghc build failure label

added Pnormal label

mentioned in issue #22792 (closed)