[PATCH 0/2] fix union merge with binary files

This started as an attempt to silence a "gcc -O3" warning. But I was curious if we could trigger the problem it complains about in practice (spoiler: we can), so I wrote a test. And it seems there was an even bigger bug lurking, where we'd generate bogus merge results. :)

This fixes both bugs.

  [1/2]: ll_binary_merge(): handle XDL_MERGE_FAVOR_UNION
  [2/2]: ll_union_merge(): pass name labels to ll_xdl_merge()

 ll-merge.c            |  6 ++++--
 t/t6406-merge-attr.sh | 18 ++++++++++++++++++
 2 files changed, 22 insertions(+), 2 deletions(-)

-Peff