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bug#22522: Commit b88e9cded7ae3756e3a2ec4a23e8df352a0239f9 breaks emacs

From: Ken Brown
Subject: bug#22522: Commit b88e9cded7ae3756e3a2ec4a23e8df352a0239f9 breaks emacs dumping for me
Date: Tue, 2 Feb 2016 17:32:18 -0500
User-agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.5.1

On 2/2/2016 5:02 PM, Andy Moreton wrote:
On Tue 02 Feb 2016, Ken Brown wrote:

On 2/2/2016 9:20 AM, Wolfgang Jenkner wrote:
On Mon, Feb 01 2016, Ken Brown wrote:

../../master/src/alloc.c: In function ‘lisp_align_malloc’:
../../master/src/alloc.c:1247:7: warning: implicit declaration of
function ‘hybrid_aligned_alloc’ [-Wimplicit-function-declaration]

Before Paul's 7fdc3cf, src/alloc.c used to contain a declaration for
aligned_alloc(), which a preprocessor definition turned into
a declaration for hybrid_aligned_alloc().  The preprocessor definition
was redundant as it is contained in src/conf_post.h as well, but the
declaration has to be supplied by some other include file.

(For FreeBSD, stdlib.h, which alloc.c includes, supplies the
declaration, guarded by #if __ISO_C_VISIBLE >= 2011 || __cplusplus >=
201103L, which is true by default, at least on FreeBSD 10).

Cygwin's stdlib.h also has the declaration with the same guard.  But for some
reason, alloc.c is still not getting the declaration.  I'll have to figure out
what's going on.

Building with V=1 shows the cygwin build uses "gcc -std=gnu99", and
aligned_alloc() is from C11, so I would expect that the declaration in
Cygwin's stdlib.h is not seen.

That was my first thought also, but it turns out not to be the issue. See my last message.


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