PowerPC64 stubs don't match calculated size

After the PR 21411 fix, the linker generated .eh_frame for ppc64 glink
can be edited by the generic code.  The sequence of events goes
something like:
1) Some object file adds .eh_frame aligned to 8, making the output
   .eh_frame aligned to at least 8, so linker generated .eh_frame FDE
   is padded to an 8 byte boundary.
2) All .eh_frame past the glink .eh_frame is garbage collected.
3) Generic code detects that last FDE (the glink .eh_frame) doesn't
   need to be padded to an 8 byte boundary, reducing size from 88 to
   84.
4) elf64-ppc.c check fails.

	PR 21441
	* elf64-ppc.c (ppc64_elf_build_stubs): Don't check glink_eh_frame
	size.

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index eb62bc3..4c8c12c 100644 (file)
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,5 +1,11 @@
 2017-09-19  Alan Modra  <amodra@gmail.com>
 
+       PR 21441
+       * elf64-ppc.c (ppc64_elf_build_stubs): Don't check glink_eh_frame
+       size.
+
+2017-09-19  Alan Modra  <amodra@gmail.com>
+
        PR 22150
        * elflink.c (bfd_elf_size_dynamic_sections): Garbage collect
        symbols before calculating verrefs.  Don't renumber dynsyms

diff --git a/bfd/elf64-ppc.c b/bfd/elf64-ppc.c
index 4821801..ea49706 100644 (file)
--- a/bfd/elf64-ppc.c
+++ b/bfd/elf64-ppc.c
@@ -13411,12 +13411,7 @@ ppc64_elf_build_stubs (struct bfd_link_info *info,
          break;
       }
 
-  /* Note that the glink_eh_frame check here is not only testing that
-     the generated size matched the calculated size but also that
-     bfd_elf_discard_info didn't make any changes to the section.  */
-  if (group != NULL
-      || (htab->glink_eh_frame != NULL
-         && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
+  if (group != NULL)
     {
       htab->stub_error = TRUE;
       info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));