[Bug gold/13521] ld.gold prefers unversioned symbol over default version

[jgunthorpe at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=13521

--- Comment #7 from Jason Gunthorpe <jgunthorpe at gmail dot com> ---
Hi Cary,

HEAD behaves differently than the version in Vivid, but the result is not
identical to ld.

I tested c74be520ba8ed2d013d43916b923b837294343cc.

$ /tmp/binutils-gdb/build/gold/ld-new --sysroot=/ --build-id --eh-frame-hdr
-m elf_x86_64 --hash-style=gnu --as-needed -dynamic-linker
/lib64/ld-linux-x86-64.so.2 -z relro
/usr/lib/gcc/x86_64-linux-gnu/4.9/../../../x86_64-linux-gnu/crt1.o
/usr/lib/gcc/x86_64-linux-gnu/4.9/../../../x86_64-linux-gnu/crti.o
/usr/lib/gcc/x86_64-linux-gnu/4.9/crtbegin.o
-L/usr/lib/gcc/x86_64-linux-gnu/4.9
-L/usr/lib/gcc/x86_64-linux-gnu/4.9/../../../x86_64-linux-gnu
-L/usr/lib/gcc/x86_64-linux-gnu/4.9/../../../../lib -L/lib/x86_64-linux-gnu
-L/lib/../lib -L/usr/lib/x86_64-linux-gnu -L/usr/lib/../lib
-L/usr/lib/gcc/x86_64-linux-gnu/4.9/../../.. t.o -lsctp -v -lgcc
--as-needed -lgcc_s --no-as-needed -lc -lgcc --as-needed -lgcc_s
--no-as-needed /usr/lib/gcc/x86_64-linux-gnu/4.9/crtend.o
/usr/lib/gcc/x86_64-linux-gnu/4.9/../../../x86_64-linux-gnu/crtn.o
GNU gold (GNU Binutils 2.25.51.20150902) 1.11

$ readelf -s a.out | grep -i sctp
Symbol table '.dynsym' contains 8 entries:
     7: 0000000000400550     0 FUNC    GLOBAL DEFAULT  UND
address@hidden (3)
Symbol table '.symtab' contains 40 entries:
    36: 0000000000000000     0 FUNC    GLOBAL DEFAULT  UND sctp_connectx

.. and with sytem ld ..
$ readelf -s a.out | grep -i sctp
Symbol table '.dynsym' contains 8 entries:
     7: 0000000000400560     0 FUNC    GLOBAL DEFAULT  UND
address@hidden (3)
Symbol table '.symtab' contains 66 entries:
    56: 0000000000400560     0 FUNC    GLOBAL DEFAULT  UND sctp_connectx@
@VERS_3

Dynamic linking is OK - but the symtab from gold doesn't have any symbol
versions even on glibc symbols, so it is a different thing.

I think this bug can be closed, thanks

Jason

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