https://sourceware.org/bugzilla/show_bug.cgi?id=33260
--- Comment #6 from Thiago Macieira <thiago at kde dot org> ---
Compiling with -fno-plt just to confirm:
$ objdump -R a.so
a.so: file format elf64-x86-64
DYNAMIC RELOCATION RECORDS
OFFSET TYPE VALUE
0000000000003e10 R_X86_64_RELATIVE *ABS*+0x0000000000001100
0000000000003e18 R_X86_64_RELATIVE *ABS*+0x00000000000010c0
0000000000004000 R_X86_64_RELATIVE *ABS*+0x0000000000004000
0000000000004010 R_X86_64_RELATIVE *ABS*+0x0000000000001120
0000000000003fc0 R_X86_64_GLOB_DAT _ITM_deregisterTMCloneTable@Base
0000000000003fc8 R_X86_64_GLOB_DAT my_func_overridable@@Base
0000000000004018 R_X86_64_64 my_func_overridable@@Base
0000000000003fd0 R_X86_64_GLOB_DAT __gmon_start__@Base
0000000000003fd8 R_X86_64_GLOB_DAT _ITM_registerTMCloneTable@Base
0000000000003fe0 R_X86_64_GLOB_DAT __cxa_finalize@GLIBC_2.2.5
$ objdump -d a.so | sed -n '/<f>:/,/^$/p'
0000000000001130 <f>:
1130: 48 83 ec 08 sub $0x8,%rsp
1134: e8 e7 ff ff ff call 1120 <my_func>
1139: ff 15 89 2e 00 00 call *0x2e89(%rip) # 3fc8
<my_func_overridable@@Base+0x2eb8>
113f: 48 8d 05 ca 2e 00 00 lea 0x2eca(%rip),%rax # 4010
<vtable>
1146: 48 83 c4 08 add $0x8,%rsp
114a: c3 ret
The JUMP_SLOTs disappear, the call to <my_func> remains PC-relative and the
call to <my_func_overridable> goes through the GOT, for which a
R_X86_64_GLOB_DAT shows up.
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