http://sourceware.org/bugzilla/show_bug.cgi?id=15200
--- Comment #7 from pete <petechou at gmail dot com> 2013-03-07 06:43:08 UTC --- I can think visibility does matter, but only for exporting the symbol or not. In the previous case, gold does define the __bss symbols but not use the definition in DSO, so I think we should still define section/segment symbols locally. -Pete (In reply to comment #6) > The symbols do not have same visibility. gold in general is > compatible with GNU ld. If you look at src/ld/emulparams/, you will > set that the __bss symbols are exported but the __exidx symbols are > defined hidden. gold matches the behaviour of ld. If you look at > defstd.cc in gold, you will again see that some of these symbols are > hidden but some are not. > > -Doug > > > On Wed, Mar 6, 2013 at 9:31 PM, petechou at gmail dot com > <sourceware-bugzi...@sourceware.org> wrote: > > http://sourceware.org/bugzilla/show_bug.cgi?id=15200 > > > > --- Comment #5 from pete <petechou at gmail dot com> 2013-03-07 05:31:25 > > UTC --- > > (In reply to comment #4) > >> The symbols __exidx_end & __exidx_start were exported incorrectly in > >> the past. This is fixed in both ld & gold in the sense that these > >> symbols are defined by not exported. I think defining these symbols > >> when there is a non-weak definition in a DSO is not the right thing to > >> do. This is basically multiple definition and usually is an error. > > > > If so, all section/segment symbols should be defined (if needed) by not > > exported? > > > > But when there is a non-weak definition in a DSO, it's still possible to > > find > > ld.gold define and export segment symbols like __bss_start (See > > gold.defstd.cc:214. only_if_ref is set to false). And there is no multiple > > definition error. > > > > $ readelf -Ds libc.so | grep __bss_start > > 268 311: 0000d898 0 NOTYPE GLOBAL DEFAULT ABS __bss_start__ > > 619 470: 0000d898 0 NOTYPE GLOBAL DEFAULT ABS __bss_start > > > > $ arm-linux-androideabi-ld.gold -shared -o libplasma.so plasma.o libc.so > > > > $ readelf -s libplasma.so | grep __bss_start > > 73: 00004148 0 NOTYPE GLOBAL DEFAULT ABS __bss_start > > 168: 00004148 0 NOTYPE GLOBAL DEFAULT ABS __bss_start > > > >> I am not working on the Android NDK so I can't give you a good > >> suggestion here. Does using the latest NDK fixes your problem? > >> > > > > Yes, there is no this issue with the latest NDK. > > > > - > > Thanks, > > Pete > > > > -- > > Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email > > ------- You are receiving this mail because: ------- > > You are on the CC list for the bug. -- Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug. _______________________________________________ bug-binutils mailing list bug-binutils@gnu.org https://lists.gnu.org/mailman/listinfo/bug-binutils
