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Override the previous definition from IR object

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Mark the previous definition from IR object as undefined so that the
generic linker will override it.

bfd/

	PR ld/23958
	* elflink.c (_bfd_elf_add_default_symbol): Override the previous
	definition from IR object.

ld/

	PR ld/23958
	* testsuite/ld-plugin/lto.exp: Run PR ld/23958 test.
	* testsuite/ld-plugin/pr23958.c: New file.
	* testsuite/ld-plugin/pr23958.t: Likewise.
This commit is contained in:
H.J. Lu
2018-12-07 15:39:49 -08:00
parent d9c859da9f
commit fbcc8bafeb
6 changed files with 38 additions and 0 deletions
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9
bfd/elflink.c
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@@ -1941,6 +1941,15 @@ _bfd_elf_add_default_symbol (bfd *abfd,
if (! bfd_link_relocatable (info))
{
bh = &hi->root;
if (bh->type == bfd_link_hash_defined
&& (bh->u.def.section->owner->flags & BFD_PLUGIN) != 0)
{
/* Mark the previous definition from IR object as
undefined so that the generic linker will override
it. */
bh->type = bfd_link_hash_undefined;
bh->u.undef.abfd = bh->u.def.section->owner;
}
if (! (_bfd_generic_link_add_one_symbol
(info, abfd, shortname, BSF_INDIRECT,
bfd_ind_section_ptr,