[Bug tree-optimization/66729] Segfault starting with r224967

[rsandifo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66729

--- Comment #9 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> 
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Turns out to be a linker bug that is still present in binutils
mainline.  I'm testing a patch.