root@fledgling:/nest/clang6root # gdb --core usr/obj/usr/src/powerpc.powerpc64/tmp/obj-tools/usr.bin/vtfontcvt/ld.core --symbols=usr/lib/debug/usr/bin/ld.bfd.debug
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Reading symbols from usr/lib/debug/usr/bin/ld.bfd.debug...done.
[New LWP 100563]
Core was generated by `/usr/bin/ld -Qy -static -melf64ppc_fbsd -Bstatic -o vtfontcvt.full /usr/lib/crt1'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x000000001002dc20 in ppc64_elf_tls_optimize (obfd=<optimized out>, info=<optimized out>) at /usr/src/gnu/usr.bin/binutils/libbfd/../../../../contrib/binutils/bfd/elf64-ppc.c:7172
7172			      for (ent = htab->tls_get_addr->elf.plt.plist;
(gdb) bt
#0  0x000000001002dc20 in ppc64_elf_tls_optimize (obfd=<optimized out>, info=<optimized out>) at /usr/src/gnu/usr.bin/binutils/libbfd/../../../../contrib/binutils/bfd/elf64-ppc.c:7172
#1  0x000000001000108c in ppc_before_allocation () at eelf64ppc_fbsd.c:204
#2  0x0000000010009ad8 in ldemul_before_allocation () at /usr/src/gnu/usr.bin/binutils/ld/../../../../contrib/binutils/ld/ldemul.c:78
#3  0x0000000010017778 in lang_process () at /usr/src/gnu/usr.bin/binutils/ld/../../../../contrib/binutils/ld/ldlang.c:5785
#4  0x0000000010021904 in main (argc=23, argv=<optimized out>) at /usr/src/gnu/usr.bin/binutils/ld/../../../../contrib/binutils/ld/ldmain.c:459
#5  0x0000000010000334 in _start (argc=<optimized out>, argv=<optimized out>, env=<optimized out>, obj=<optimized out>, cleanup=<optimized out>, ps_strings=<optimized out>)
    at /usr/src/lib/csu/powerpc64/crt1.c:96
#6  0x0000000000000000 in ?? ()
(gdb)