x86-64: Add a test for hidden undefined symbol
Linker should report an error for hidden undefined symbol when building
a shared library without the "recompile with -fPIC" message:
$ cat x.c
extern int foo __attribute__ ((visibility ("hidden")));
int
func (void)
{
return foo;
}
$ gcc -c -fPIC -O2 x.c
$ objdump -dwr x.o
x.o: file format elf64-x86-64
Disassembly of section .text:
0000000000000000 <func>:
0: 8b 05 00 00 00 00 mov 0x0(%rip),%eax # 6 <func+0x6> 2: R_X86_64_PC32 foo-0x4
6: c3 ret
$ ld -shared -o x.so x.o
ld: x.o: in function `func':
x.c:(.text+0x2): undefined reference to `foo'
ld: x.o: relocation R_X86_64_PC32 against undefined hidden symbol `foo' can not be used when making a shared object
ld: final link failed: bad value
$
since -fPIC has been used.
* testsuite/ld-x86-64/hidden6.d: New file.
* testsuite/ld-x86-64/hidden6.s: Likewise.
* testsuite/ld-x86-64/x86-64.exp: Run hidden6.
Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
3 files changed
