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Date: Sat, 7 Apr 2018 10:29:45 -0400
From: Rich Felker <dalias@...c.org>
To: musl@...ts.openwall.com
Subject: Re: [PATCH] Fix usage of __strftime_fmt_1 in wcsftime

On Sat, Apr 07, 2018 at 09:26:32AM -0500, Samuel Holland wrote:
> Commit 8a6bd7307da3fc4d08dd6a9277b611ccb4971354 modified the signature
> of __strftime_fmt_1 in strftime.c, but failed to update the prototype in
> wcsftime.c. This was found by compiling musl with LTO:
> 
>     src/time/wcsftime.c:7:13: warning: type of '__strftime_fmt_1' does \
>         not match original declaration [-Wlto-type-mismatch]
> ---
>  src/time/wcsftime.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/src/time/wcsftime.c b/src/time/wcsftime.c
> index 638e64f6..6584c45c 100644
> --- a/src/time/wcsftime.c
> +++ b/src/time/wcsftime.c
> @@ -4,7 +4,7 @@
>  #include "locale_impl.h"
>  #include "libc.h"
>  
> -const char *__strftime_fmt_1(char (*s)[100], size_t *l, int f, const struct tm *tm, locale_t loc);
> +const char *__strftime_fmt_1(char (*s)[100], size_t *l, int f, const struct tm *tm, locale_t loc, int pad);
>  
>  size_t __wcsftime_l(wchar_t *restrict s, size_t n, const wchar_t *restrict f, const struct tm *restrict tm, locale_t loc)
>  {
> @@ -35,7 +35,7 @@ size_t __wcsftime_l(wchar_t *restrict s, size_t n, const wchar_t *restrict f, co
>  		}
>  		f = p;
>  		if (*f == 'E' || *f == 'O') f++;
> -		t_mb = __strftime_fmt_1(&buf, &k, *f, tm, loc);
> +		t_mb = __strftime_fmt_1(&buf, &k, *f, tm, loc, 0);
>  		if (!t_mb) break;
>  		k = mbstowcs(wbuf, t_mb, sizeof wbuf / sizeof *wbuf);
>  		if (k == (size_t)-1) return 0;
> -- 
> 2.16.1

I think this is necessary but incomplete. It's likely the affected
functionality is not working in wcsftime... :(

Rich

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