[PATCH 2/7] libio: Add hidden prototype for ungetc

[Adhemerval Zanella]

On 29/06/2021 07:11, Florian Weimer via Libc-alpha wrote:
> And make ungetc the primary symbol, with _IO_ungetc as an alias.

LGTM, thanks.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

> ---
>  include/stdio.h  | 1 +
>  libio/ioungetc.c | 6 +++---
>  2 files changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/include/stdio.h b/include/stdio.h
> index 2e0dc80c16..311adcf953 100644
> --- a/include/stdio.h
> +++ b/include/stdio.h
> @@ -212,6 +212,7 @@ libc_hidden_ldbl_proto (dprintf)
>  libc_hidden_ldbl_proto (fprintf)
>  libc_hidden_ldbl_proto (vfprintf)
>  libc_hidden_ldbl_proto (sprintf)
> +libc_hidden_proto (ungetc)
>  libc_hidden_proto (fwrite)
>  libc_hidden_proto (perror)
>  libc_hidden_proto (remove)
> diff --git a/libio/ioungetc.c b/libio/ioungetc.c
> index dcf1c4ca9e..e68a4aaca8 100644
> --- a/libio/ioungetc.c
> +++ b/libio/ioungetc.c
> @@ -27,7 +27,7 @@
>  #include "libioP.h"
>  
>  int
> -_IO_ungetc (int c, FILE *fp)
> +ungetc (int c, FILE *fp)
>  {
>    int result;
>    CHECK_FILE (fp, EOF);
> @@ -40,5 +40,5 @@ _IO_ungetc (int c, FILE *fp)
>    _IO_release_lock (fp);
>    return result;
>  }
> -
> -weak_alias (_IO_ungetc, ungetc)
> +libc_hidden_def (ungetc)
> +strong_alias (ungetc, _IO_ungetc)
>