Re: msvcrt: Don't pass NULL as __ms_va_list in printf implementation

[Marcus Meissner]

On Wed, May 11, 2011 at 12:20:51PM +0200, Piotr Caban wrote:
> dlls/msvcrt/printf.h |    2 +-
>  dlls/msvcrt/wcs.c    |    4 ++--
>  2 files changed, 3 insertions(+), 3 deletions(-)
> diff --git a/dlls/msvcrt/printf.h b/dlls/msvcrt/printf.h
> index 64d159e..53f35bc 100644
> --- a/dlls/msvcrt/printf.h
> +++ b/dlls/msvcrt/printf.h
> @@ -607,7 +607,7 @@ static int FUNC_NAME(create_positional_ctx)(void *args_ctx, const APICHAR *forma
>      int i, j;
>  i = FUNC_NAME(pf_printf)(FUNC_NAME(puts_clbk_str), &puts_ctx, format, NULL, TRUE, FALSE,
> -
>        arg_clbk_type, args_ctx, NULL);
> -
>        arg_clbk_type, args_ctx, valist);

You should not process a va_list twice.

You could va_copy() it to a second va_list if you need to do it twice.

Ciao, Marcus

msvcrt: Don't pass NULL as __ms_va_list in printf implementation

[Eric Pouech]

> You could va_copy() it to a second va_list if you need to do it twice.

va_copy is C99. Are we ready to say that is now dependant to C89 ?.

A+