------- Comment #32 from hjl at lucon dot org 2006-12-05 23:33 ------- (In reply to comment #31) > (In reply to comment #27) > > (In reply to comment #26) > > > Created an attachment (id=12714) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=12714&action=view) [edit] > > > main_skel.o > > > > > > > It looks OK. Please provide a complete testcase. It could be a gcc bug, > > a linker bug and/or a problem on your system. > > > http://minus.ds14.agh.edu.pl/~pluto/bug.tar.bz2 > > $ g++ -shared main.o main_skel.o ./libqt-mt.so.3.3.7 > /usr/bin/ld: main_skel.o: relocation R_X86_64_PC32 against `_ZTV9QMemArrayIcE' > can not be used when making a shared object; recompile with -fPIC > /usr/bin/ld: final link failed: Bad value > collect2: ld returned 1 exit status > > gcc-4.2.0-0.20061119r118994.1.x86_64 > binutils-2.17.50.0.8-1.x86_64 > [EMAIL PROTECTED] bug]$ ld -shared main.o main_skel.o ld: main_skel.o: relocation R_X86_64_PC32 against `_ZTV9QMemArrayIcE' can not be used when making a shared object; recompile with -fPIC ld: final link failed: Bad value [EMAIL PROTECTED] bug]$ readelf -a main.o | grep _ZTV9QMemArrayIcE COMDAT group section [ 35] `.group' [_ZTV9QMemArrayIcE] contains 1 sections: [ 114] .data.rel.ro._ZTV9QMemArrayIcE 00000000083e 00c300000009 R_X86_64_GOTPCREL 0000000000000000 _ZTV9QMemArrayIcE + fffffffffffffffc 000000000003 00c300000009 R_X86_64_GOTPCREL 0000000000000000 _ZTV9QMemArrayIcE + fffffffffffffffc 000000000003 00c300000009 R_X86_64_GOTPCREL 0000000000000000 _ZTV9QMemArrayIcE + fffffffffffffffc Relocation section '.rela.data.rel.ro._ZTV9QMemArrayIcE' at offset 0xe75c8 contains 6 entries: 195: 0000000000000000 56 OBJECT WEAK DEFAULT 114 _ZTV9QMemArrayIcE [EMAIL PROTECTED] bug]$ readelf -a main_skel.o | grep _ZTV9QMemArrayIcE [11] _ZTV9QMemArrayIcE GROUP 0000000000000000 00000090 COMDAT group section [ 11] `_ZTV9QMemArrayIcE' [_ZTV9QMemArrayIcE] contains 1 sections: [ 40] .data.rel.ro._ZTV9QMemArrayIcE 000000000179 002c00000002 R_X86_64_PC32 0000000000000000 _ZTV9QMemArrayIcE + c 000000000195 002c00000002 R_X86_64_PC32 0000000000000000 _ZTV9QMemArrayIcE + c 000000000003 002c00000002 R_X86_64_PC32 0000000000000000 _ZTV9QMemArrayIcE + c 000000000003 002c00000002 R_X86_64_PC32 0000000000000000 _ZTV9QMemArrayIcE + c Relocation section '.rela.data.rel.ro._ZTV9QMemArrayIcE' at offset 0x2dd0 contains 6 entries: 44: 0000000000000000 56 OBJECT WEAK HIDDEN 40 _ZTV9QMemArrayIcE [EMAIL PROTECTED] bug]$ ld -shared main_skel.o main.o [EMAIL PROTECTED] bug]$
The hidden definition in main_skel.o is ignored due to COMDAT group. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20218
