Re: the prototype decl of memcpy/memcmp/calloc/free shouldnot in sched.h

[Rich Felker <dalias@libc.org>]

On Sat, Nov 01, 2014 at 01:02:36PM -0400, Rich Felker wrote:
> On Sat, Nov 01, 2014 at 05:22:30PM +0100, Szabolcs Nagy wrote:
> > * ????????? <jianzhong.huang@i-soft.com.cn> [2014-10-31 11:42:35 +0800]:
> > > 
> > > In firefox, there is a system_wrapper header include sched.h, but in hunspell codes, calloc and free was redefined, so there is a conflicts here.
> > > for example, in "extensions/spellcheck/hunspell/src/hunspell_alloc_hooks.h"
> > > #define calloc(count, size) HunspellAllocator::CountingCalloc(count, size)
> > > 
> > 
> > a simple fix for that in musl is
> > 
> > 	void *(calloc)(size_t, size_t);
> > 
> > or
> > 
> > 	#define CPU_ALLOC(n) __cpu_alloc(n)
> > 	static __inline cpu_set_t *__cpu_alloc(size_t _n)
> > 	{
> > 		extern void *(calloc)(size_t,size_t);
> > 		return (calloc)(1,CPU_ALLOC_SIZE(_n));
> > 	}
> > 
> > which almost gets the namespace right: only a non-function like
> > calloc macro defined before sched.h would be an issue
> 
> Yes, I like moving the declarations to non-file-scope better.

I think we should do this, but while looking at how, I noticed a
couple other issues:

1. Useless declaration of memcpy, which is unused.
2. Use of memset without a declaration.

Just making a note here so I don't overlook these when fixing it.

Rich