[Bug binutils/4716] New: --strip-unneeded strips too much with relocatable ELF objects from fpc/nasm

[vapier at gentoo dot org]

relocatable ELF objects generated by fpc (the free pascal compiler) dont seem to
play well with `strip --strip-unneeded` ... i'm wondering if this is a bug in
strip or in fpc (it not generating enough ELF information), but i think it's a
bug in strip ;)

for example, in the attached object produced by fpc, there is a global symbol
THREADVARLIST_SYSCALL which is culled after being processed with 
--strip-unneeded

similar behavior can be seen with yasm/nasm when generating objects without
DWARF debug code ... for example:
$ cat test.asm
GLOBAL _foo:function
_foo:
        ret;
$ yasm -f elf test.asm -o test.o
$ readelf -s test.o | grep foo
     3: 00000000     0 FUNC    GLOBAL DEFAULT    4 _foo
$ strip --strip-unneeded test.o
$ readelf -s test.o | grep foo
<nothing>
$ yasm -g dwarf2 -f elf test.asm -o test.o
$ readelf -s test.o | grep foo
     7: 00000000     0 FUNC    GLOBAL DEFAULT    4 _foo
$ strip --strip-unneeded test.o
$ readelf -s test.o | grep foo
     2: 00000000     0 FUNC    GLOBAL DEFAULT    1 _foo

-- 
           Summary: --strip-unneeded strips too much with relocatable ELF
                    objects from fpc/nasm
           Product: binutils
           Version: 2.18 (HEAD)
            Status: NEW
          Severity: normal
          Priority: P2
         Component: binutils
        AssignedTo: unassigned at sources dot redhat dot com
        ReportedBy: vapier at gentoo dot org
                CC: bug-binutils at gnu dot org,toolchain at gentoo dot org
  GCC host triplet: i686-linux-gnu


http://sourceware.org/bugzilla/show_bug.cgi?id=4716

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