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Don't issue a warning for references in LTO IR to warning symbols

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bfd/
	PR ld/16746
	* linker.c (_bfd_generic_link_add_one_symbol): Don't issue a
	warning for references in LTO IR to warning symbols.

ld/testsuite/
	PR ld/16746
	* ld-plugin/lto.exp: Add 4 tests for PR ld/16746.
	* ld-plugin/pr16746a.c: New file.
	* ld-plugin/pr16746b.c: Likewise.
	* ld-plugin/pr16746c.c: Likewise.
	* ld-plugin/pr16746d.c: Likewise.
This commit is contained in:
H.J. Lu 2014-08-07 09:53:46 +09:30 • committed by Alan Modra
parent 59c2656733
commit db7129469b
8 changed files with 73 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

15
bfd/linker.c
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@ -1776,8 +1776,10 @@ _bfd_generic_link_add_one_symbol (struct bfd_link_info *info,
break;
case WARNC:
/* Issue a warning and cycle. */
if (h->u.i.warning != NULL)
/* Issue a warning and cycle, except when the reference is
in LTO IR. */
if (h->u.i.warning != NULL
&& (abfd->flags & BFD_PLUGIN) == 0)
{
if (! (*info->callbacks->warning) (info, h->u.i.warning,
h->root.string, abfd,
@ -1802,12 +1804,9 @@ _bfd_generic_link_add_one_symbol (struct bfd_link_info *info,
break;
case WARN:
/* Warn if this symbol has been referenced already,
otherwise add a warning. A symbol has been referenced if
the u.undef.next field is not NULL, or it is the tail of the
undefined symbol list. The REF case above helps to
ensure this. */
if (h->u.undef.next != NULL || info->hash->undefs_tail == h)
/* Warn if this symbol has been referenced already from non-IR,
otherwise add a warning. */
if (h->non_ir_ref)
{
if (! (*info->callbacks->warning) (info, string, h->root.string,
hash_entry_bfd (h), NULL, 0))