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unknown epilogue mangling, WARNING: Epilogue junk

At some point (before the 10th Apr) we started getting epilogue junk in the HEAD, e.g.:

../compiler/ghc-inplace -Werror -H64m -Onot -fasm -optc-O2 -I../includes -I. -Iparallel -Ism -DCOMPILING_RTS -package-name rts -fvia-C -static  -I../gmp/gmpbuild -I../libffi/build/include -I. -dcmm-lint     -c Apply.cmm -o Apply.o
ghc-asm: unknown epilogue mangling? x86_64-unknown-linux
WARNING: Epilogue junk?:
    addq    $8, %rsp
    ret
    .size   stg_PAP_entry, .-stg_PAP_entry
    .p2align 4,,15
.globl stg_PAP_apply
    .type   stg_PAP_apply, @function
Trac metadata
Trac field Value
Version 6.9
Type Bug
TypeOfFailure OtherFailure
Priority high
Resolution Unresolved
Component Compiler
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system Unknown
Architecture Unknown
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