From: Rusty Russell <rusty@rustcorp.com.au>
Date: Mon, 21 Mar 2011 11:47:42 +0000 (+1030)
Subject: cast: fix compilation with GCC's -Wcast-qual
X-Git-Url: https://git.ozlabs.org/?p=ccan;a=commitdiff_plain;h=1313203b72656e8480805c7688c187d274fdceeb;hp=1313203b72656e8480805c7688c187d274fdceeb

cast: fix compilation with GCC's -Wcast-qual

Samba uses -Wcast-qual to warn about casting away const.  The kind of
coders who care about const correctness are likely to turn that option
on, so we should make sure it's compatible with cast_const().
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