binutils-gdb/ld/testsuite/ld-elf/pr18720b.c

#include <stdio.h>

void
foo (void)
{
  printf ("MAIN\n");
}

asm (".symver foo,foo@FOO");
asm (".set foo_alias,foo");
asm (".global foo_alias");
#if defined __powerpc64__ && defined _CALL_AIXDESC && !defined _CALL_LINUX
asm (".symver .foo,.foo@FOO");
asm (".set .foo_alias,.foo");
asm (".global .foo_alias");
#endif
Properly merge hidden versioned symbol The hidden versioned symbol can only be merged with the versioned symbol with the same symbol version. _bfd_elf_merge_symbol should check the symbol version before merging the new hidden versioned symbol with the existing symbol. _bfd_elf_link_hash_copy_indirect can't copy any references to the hidden versioned symbol. We need to bind a symbol locally when linking executable if it is locally defined, hidden versioned, not referenced by shared library and not exported. bfd/ PR ld/18720 * elflink.c (_bfd_elf_merge_symbol): Add a parameter to indicate if the new symbol matches the existing one. The new hidden versioned symbol matches the existing symbol if they have the same symbol version. Update the existing symbol only if they match. (_bfd_elf_add_default_symbol): Update call to _bfd_elf_merge_symbol. (_bfd_elf_link_assign_sym_version): Don't set the hidden field here. (elf_link_add_object_symbols): Override a definition only if the new symbol matches the existing one. (_bfd_elf_link_hash_copy_indirect): Don't copy any references to the hidden versioned symbol. (elf_link_output_extsym): Bind a symbol locally when linking executable if it is locally defined, hidden versioned, not referenced by shared library and not exported. Turn on VERSYM_HIDDEN only if the hidden vesioned symbol is defined locally. ld/testsuite/ PR ld/18720 * ld-elf/indirect.exp: Run tests for PR ld/18720. * ld-elf/pr18720.out: New file. * ld-elf/pr18720a.c: Likewise. * ld-elf/pr18720b.c: Likewise. * ld-elf/pr18720c.c: Likewise. 2015-08-07 20:04:21 +08:00			`#include <stdio.h>`

			`void`
			`foo (void)`
			`{`
			`printf ("MAIN\n");`
			`}`

			`asm (".symver foo,foo@FOO");`
			`asm (".set foo_alias,foo");`
			`asm (".global foo_alias");`
PowerPC64 dot-sym testsuite fixes This illustrates quite well why dot-symbols had to go. PowerPC64 gcc for Linux stopped producing them 12 years ago, but the Linux kernel still persists in using them so it's necessary to keep and regression test ld support. * testsuite/ld-elf/indirect1b.c: Give dot-symbol a version too. * testsuite/ld-elf/indirect2.c: Likewise. * testsuite/ld-elf/indirect3b.c: Likewise. * testsuite/ld-elf/indirect4b.c: Likewise. * testsuite/ld-elf/pr18718.c: Likewise. * testsuite/ld-elf/pr18720b.c: Likewise. * testsuite/ld-elf/pr19553c.c: Likewise. * testsuite/ld-elfvers/vers.h (FUNC_SYMVER): Define. * testsuite/ld-elfvers/vers1.c: Use FUNC_SYMVER for functions. * testsuite/ld-elfvers/vers4.c: Likewise. * testsuite/ld-elfvers/vers5.c: Likewise. * testsuite/ld-elfvers/vers6.c: Likewise. * testsuite/ld-elfvers/vers7a.c: Likewise. * testsuite/ld-elfvers/vers9.c: Likewise. * testsuite/ld-elfvers/vers15.c: Likewise. * testsuite/ld-elfvers/vers18.c: Likewise. * testsuite/ld-elfvers/vers22a.c: Likewise. * testsuite/ld-elfvers/vers23a.c: Likewise. * testsuite/ld-elfvers/vers27d1.c: Likewise. * testsuite/ld-elfvers/vers21.c: Likewise. (_old_bar): Use attribute weak rather than asm weak. * testsuite/ld-ifunc/pr16467b.c: Give dot-symbol a version. * testsuite/ld-plugin/pr12760b.c: Define warning on .bar rather than bar for ppc64 -mcall-aixdesc. * testsuite/ld-plugin/pr16746a.c: Similarly for foobar. * testsuite/ld-plugin/pr16746b.c: Likewise. * testsuite/ld-elf/shared.exp: Allow dot-symbol in warnings and errors. * testsuite/ld-plugin/lto.exp: Likewise. * testsuite/ld-plugin/plugin-6.d: Likewise. * testsuite/ld-plugin/plugin-7.d: Likewise. * testsuite/ld-plugin/plugin-8.d: Likewise. * testsuite/ld-plugin/plugin-13.d: Likewise. * testsuite/ld-plugin/plugin-14.d: Likewise. * testsuite/ld-plugin/plugin-15.d: Likewise. * testsuite/ld-plugin/plugin-16.d: Likewise. * testsuite/ld-plugin/plugin-20.d: Likewise. * testsuite/ld-plugin/plugin-21.d: Likewise. * testsuite/ld-plugin/plugin-22.d: Likewise. * testsuite/ld-plugin/plugin-23.d: Likewise. * testsuite/ld-plugin/plugin.exp: Define .main and .puts for ppc64 -mcall-aixdesc. * testsuite/ld-elfvers/vers.exp (test_ar): Trim dot-symbols. (objdump_dynsymstuff): Likewise. (objdump_symstuff): Likewise. Pack flags to keep column count consistent. * testsuite/ld-elfweak/elfweak.exp (objdump_dynsymstuff, objdump_symstuff): As for vers.exp. * testsuite/ld-elfvers/vers6.sym: Allow dot-symbols. * testsuite/ld-elfvers/vers1.sym: Allow missing F flag for -mcall-aixdesc .opd syms and adjust for flag packing. * testsuite/ld-elfvers/vers4.sym: Likewise. * testsuite/ld-elfvers/vers4a.sym: Likewise. * testsuite/ld-elfvers/vers7a.sym: Likewise. * testsuite/ld-elfvers/vers9.sym: Likewise. * testsuite/ld-elfvers/vers15.sym: Likewise. * testsuite/ld-elfvers/vers18.sym: Likewise. * testsuite/ld-elfvers/vers21.sym: Likewise. * testsuite/ld-elfvers/vers22a.sym: Likewise. * testsuite/ld-elfvers/vers23a.sym: Likewise. * testsuite/ld-elfvers/vers27d.sym: Likewise. * testsuite/ld-elfweak/strong.sym: Likewise. * testsuite/ld-elfweak/strongcomm.sym: Likewise. * testsuite/ld-elfweak/strongdata.sym: Likewise. 2016-12-03 18:29:43 +08:00			`#if defined __powerpc64__ && defined _CALL_AIXDESC && !defined _CALL_LINUX`
			`asm (".symver .foo,.foo@FOO");`
			`asm (".set .foo_alias,.foo");`
			`asm (".global .foo_alias");`
			`#endif`