[PATCH] malloc: Clean up __malloc_initialized

[Florian Weimer]

* Siddhesh Poyarekar via Libc-alpha:

> -/* In the GNU libc we rename the global variable
> -   `__malloc_initialized' to `__libc_malloc_initialized'.  */
> -#define __malloc_initialized __libc_malloc_initialized
> -/* Nonzero if the malloc is already initialized.  */
> -extern int __malloc_initialized attribute_hidden;

You need to provide the attribute_hidden somewhere, otherwise you'll get
worse code on some targets.

> diff --git a/malloc/mcheck.c b/malloc/mcheck.c
> index 2a1fc645d4..93d7992a41 100644
> --- a/malloc/mcheck.c
> +++ b/malloc/mcheck.c
> @@ -21,6 +21,7 @@
>  # define _MALLOC_INTERNAL
>  # include <malloc.h>
>  # include <mcheck.h>
> +# include <stdbool.h>
>  # include <stdint.h>
>  # include <stdio.h>
>  # include <libintl.h>
> @@ -372,10 +373,12 @@ mabort (enum mcheck_status status)
>  int
>  mcheck (void (*func) (enum mcheck_status))
>  {
> +  extern bool __malloc_initialized;
> +

This suggests that __malloc_initialized should remain in the wrapper
header.

Thanks,
Florian