[v3 PATCH] PR libstdc++/78389

[Jonathan Wakely]

On 15/01/17 19:07 +0200, Ville Voutilainen wrote:
>    PR libstdc++/78389
>    Fix backwards size adjustments.

I don't think repeating this text here and ...

>    * include/bits/list.tcc (merge(list&&)):
>    Fix backwards size adjustments.

... here is useful.

More useful would be a good Git-style commit log with a separate
description on the first line. So the svn commit would have a subject
line, followed by a blank line, followed by the content of the
ChangeLog entry e.g.

PR78389 fix backwards size adjustments

	PR libstdc++/78389
	* include/bits/list.tcc (merge(list&&)): Fix backwards size
	adjustments.
	(merge(list&&, _StrictWeakOrdering)): Likewise.
	* testsuite/23_containers/list/operations/78389.cc: Add
	better test for the sizes.

See the output of "git log --pretty=oneline --abbrev-commit" for why
that's useful (and how messy and unhelpful that output is when commits
don't have a separate summary on the first line). See also
http://chris.beams.io/posts/git-commit/

Anyway ...

OK for trunk with the additional changes to use better magic numbers
in the tests.