Introduce link_map_audit_state accessor function

To improve GCC 10 compatibility, it is necessary to remove the l_audit
zero-length array from the end of struct link_map.  In preparation of
that, this commit introduces an accessor function for the audit state,
so that it is possible to change the representation of the audit state
without adjusting the code that accesses it.

Tested on x86_64-linux-gnu.  Built on i686-gnu.

Change-Id: Id815673c29950fc011ae5301d7cde12624f658df

1 files changed, 6 insertions, 3 deletions

diff --git a/elf/dl-fini.c b/elf/dl-fini.c
index bed736d756..70e7346304 100644
--- a/elf/dl-fini.c
+++ b/elf/dl-fini.c
@@ -152,9 +152,12 @@ _dl_fini (void)
 		      for (unsigned int cnt = 0; cnt < GLRO(dl_naudit); ++cnt)
 			{
 			  if (afct->objclose != NULL)
-			    /* Return value is ignored.  */
-			    (void) afct->objclose (&l->l_audit[cnt].cookie);
-
+			    {
+			      struct auditstate *state
+				= link_map_audit_state (l, cnt);
+			      /* Return value is ignored.  */
+			      (void) afct->objclose (&state->cookie);
+			    }
 			  afct = afct->next;
 			}
 		    }