Move fortified explicit_bzero back to string3

  Commit 38765ab68f329fd moved the bzero, bcopy, and explicit_bzero
fortified macros to a common header (strings_fortified.h).  However
the side effect is a fortified explicit_bzero is defined when including
only strings.h.

This patch moves back the fortified explicit_bzero definition to
strings3.h header.

Checked on x86_64-linux-gnu.
---
 ChangeLog                       | 5 +++++
 string/bits/string3.h           | 9 +++++++++
 string/bits/strings_fortified.h | 9 ---------
 3 files changed, 14 insertions(+), 9 deletions(-)
  

I intend to push it today if no one opposes it (it is a fix for
38765ab68f329fd noted by Florian).

On 06/01/2017 11:08, Adhemerval Zanella wrote:
> Commit 38765ab68f329fd moved the bzero, bcopy, and explicit_bzero
> fortified macros to a common header (strings_fortified.h).  However
> the side effect is a fortified explicit_bzero is defined when including
> only strings.h.
> 
> This patch moves back the fortified explicit_bzero definition to
> strings3.h header.
> 
> Checked on x86_64-linux-gnu.
> ---
>  ChangeLog                       | 5 +++++
>  string/bits/string3.h           | 9 +++++++++
>  string/bits/strings_fortified.h | 9 ---------
>  3 files changed, 14 insertions(+), 9 deletions(-)
> 
> diff --git a/string/bits/string3.h b/string/bits/string3.h
> index 0b0a377..738226d 100644
> --- a/string/bits/string3.h
> +++ b/string/bits/string3.h
> @@ -92,6 +92,15 @@ __NTH (memset (void *__dest, int __ch, size_t __len))
>  
>  #ifdef __USE_MISC
>  # include <bits/strings_fortified.h>
> +
> +void __explicit_bzero_chk (void *__dest, size_t __len, size_t __destlen)
> +  __THROW __nonnull ((1));
> +
> +__fortify_function void
> +__NTH (explicit_bzero (void *__dest, size_t __len))
> +{
> +  __explicit_bzero_chk (__dest, __len, __bos0 (__dest));
> +}
>  #endif
>  
>  __fortify_function char *
> diff --git a/string/bits/strings_fortified.h b/string/bits/strings_fortified.h
> index fd396f9..411e786 100644
> --- a/string/bits/strings_fortified.h
> +++ b/string/bits/strings_fortified.h
> @@ -31,13 +31,4 @@ __NTH (bzero (void *__dest, size_t __len))
>    (void) __builtin___memset_chk (__dest, '\0', __len, __bos0 (__dest));
>  }
>  
> -void __explicit_bzero_chk (void *__dest, size_t __len, size_t __destlen)
> -  __THROW __nonnull ((1));
> -
> -__fortify_function void
> -__NTH (explicit_bzero (void *__dest, size_t __len))
> -{
> -  __explicit_bzero_chk (__dest, __len, __bos0 (__dest));
> -}
> -
>  #endif
>