bug#22522: Commit b88e9cded7ae3756e3a2ec4a23e8df352a0239f9 breaks emacs dumping for me

[Andy Moreton]

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.

    AndyM