https://sourceware.org/bugzilla/show_bug.cgi?id=33260
--- Comment #1 from Thiago Macieira <thiago at kde dot org> --- gold appears to Do The Right Thing™ for the relocations, but fails at propagating the ELF property for -mno-direct-extern-access: $ cc -fuse-ld=gold -fPIC -DUSE_PROTECTED -O2 -fvisibility=hidden -mno-direct-extern-access -shared -o a.so a.c b.c /usr/bin/ld.gold: warning: /tmp/ccGnijBz.o: unknown program property type -1342144512 in .note.gnu.property section Relocation for my_func disappears from the relocation table: $ objdump -R a.so DYNAMIC RELOCATION RECORDS OFFSET TYPE VALUE 0000000000001db8 R_X86_64_RELATIVE *ABS*+0x00000000000006c0 0000000000001dc0 R_X86_64_RELATIVE *ABS*+0x0000000000000700 0000000000002010 R_X86_64_RELATIVE *ABS*+0x0000000000002010 0000000000002020 R_X86_64_RELATIVE *ABS*+0x0000000000000710 0000000000001fe0 R_X86_64_GLOB_DAT __cxa_finalize@GLIBC_2.2.5 0000000000001fd8 R_X86_64_GLOB_DAT _ITM_registerTMCloneTable 0000000000001fd0 R_X86_64_GLOB_DAT _ITM_deregisterTMCloneTable 0000000000001fc8 R_X86_64_GLOB_DAT __gmon_start__ 0000000000002028 R_X86_64_64 my_func_overridable@@Base 0000000000002000 R_X86_64_JUMP_SLOT __cxa_finalize@GLIBC_2.2.5 0000000000002008 R_X86_64_JUMP_SLOT my_func_overridable@@Base Function call is still direct, PC-relative: $ objdump -d a.so | sed -n '/<f>/,/^$/p' 0000000000000730 <f>: 730: 48 83 ec 08 sub $0x8,%rsp 734: e8 d7 ff ff ff call 710 <my_func> 739: 48 8d 05 e0 18 00 00 lea 0x18e0(%rip),%rax # 2020 <vtable> 740: 48 83 c4 08 add $0x8,%rsp 744: c3 ret Do note how it also adds a jump slot for the overridable function, which is probably another bug. -- You are receiving this mail because: You are on the CC list for the bug.
