From: Rusty Russell <rusty@rustcorp.com.au>
Date: Wed, 31 May 2017 03:05:45 +0000 (+0930)
Subject: io: fix nasty io_wake corner case.
X-Git-Url: http://git.ozlabs.org/?p=ccan;a=commitdiff_plain;h=d00c9d1be5a56fbf990882f9a6da5704b3f1ea75;hp=d00c9d1be5a56fbf990882f9a6da5704b3f1ea75

io: fix nasty io_wake corner case.

If we're duplex and one io_always callback makes the other io_always,
we screwed up and hit an assertion later when the conn was in the
always list but didn't actually want to be.

io_wake() uses io_always(), so this is how it happened.  Writing a
test case for this was a bit fun, too.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
---